polymer chemistry class 12

Polymer is defined as a chemical substance of a high molecular mass formed by the combination of a large number of simple molecules, called monomers. Addition polymers have the same empirical formula as their monomers. It is a polyester having crosslinks. Answer: Polymers are high molecular mass macromolecules, which consist of repeating structural units derived from monomers. To help you with that, below we have provided the Notes of 12 Chemistry for topic Polymers. It is formed as follows. NCERT Book for Class 12 Chemistry Chapter 15 Polymers is available for reading or download on this page. The word “Polymer” is derived from two Greek words, ‘Poly’ that means many (numerous) and ‘Mer’ which means units. Vulcanisatlon is carried out by adding sulphur (3-5%) and zinc oxide to the rubber, and then heating the object at about 110°Cfor about 20-30 minutes. It is also chemically inert and more tougher and harder. It is a chapter which is purely conceptual with a lot of emphasis in theory. If N1 molecules have molecular mass M1 each, N2 molecules have molecular mass M2 each, N3 molecules have molecular mass M3 each and so on. Superglue is a polymer of methyl α-cyanoacrylate and is obtained by anionic polymerisation of monomer. Classifications of polymers • Polymers are made up of large no of macromolecules. Hope these notes helped you in your schools exam preparation. Step I Initiation Strong bases act as initiator. Step I Chain initiation step In this step, peroxide undergoes homolytic fission, e.g., benzoyl peroxide on heating produces phenyl initiator free radical. It is a copolymer of buta-I, 3-diene and acrylonitrile. Classification of polymers • 1. Nylon-66 is a linear polymer and has very high tensile strength. The growth of the polymer chain depends upon the availability of the monomers in the reaction. Candidates can click on the subject wise link to get the same. 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Natural rubber is cis 1,4-polyisoprene. In the natural rubber, there is no polar substituent. Natural rubber is soft and sticky. These crosslinks tend to limit the motion of chains relative to each other. Here we have given detailed notes on Polymers, Classification of Polymers for the students, especially of Class 12. In this chapter, you will study what polymers are and how they are formed. These weak binding forces permit the polymer to be stretched. Download CBSE Class 12 Chemistry Polymer Questions Answers pdf, Chemistry revision notes, mind maps, formulas, examination notes, sure shot questions, CBSE Class 12 Chemistry Polymer Questions Answers. polythene. CBSE Class-12 Chemistry Quick Revision Notes Chapter 15 Polymers Polymers: Polymers are high molecular mass substance consisting of large number of repeating structural units. Polymer is defined as a chemical substance of a high molecular mass formed by the combination of a … (i) Addition polymers The polymers formed by the polymerisation of monomers containing double or triple bonds (unsaturated compounds) are called addition polymers. There are two broad types of polymerisation reaction: Huge List of CBSE Chemistry Projects for Class 12, Chemistry Science Fair Projects Free Download, Models, Experiments, Winning CBSE Chemistry Science Experiments,cool and fun interesting investigatory project for chemistry for Kids and also for Middle school, Elementary School for class 5th Grade,6th,7th,8th,9th 10th,11th, 12th Grade and High School , MSC and College Students. Class 12 Chemistry Polymers – Get here the Notes for Class 12 Polymers. Silk Is a thread like natural polymer which is obtained from cocoons of sllk worms. It is governed by free radical mechanism. A linear or cross linked material is obtained depending upon the condition of reaction. Nylon-66 is usually fabricated into sheets. Question 1: Write the names and structures of the monomers of the following polymers: (i) Nylon-6,6 (ii) Bakelite (iii) Polystyrene Answer: Question 2: Write the names and structures of the monomers of the following polymers: (i) Glyptal (ii) Teflon (iii)Nylon-6 Answer: Question 3: Write the name and structures of the monomers of the following polymers: (i) Buna-S (ii) Glyptal (iii) Polyvinyl chloride Answer: Question 4: Write the names and structures of the monomers of the following polymers: (i) Nylon-6 (ii) Novolac (iii)B… Polymers have a high molecular mass (10 3 − 10 7 u). Here is an example of the following: Hello Friends, welcome back to another video! A copolymer contains multiple units of each monomer in the same polymeric chain. These identical structures, we understand as a unit made up of two or more molecules, join together to form a long chain. Depending upon the nature of the reactive species involved. Distinction Between Chain Growth Polymerisation and Step Growth Polymerisation. Answer: c Explaination: (c) C 6 H 5 —CH=CH 2 is monomer of polystyrene. Dec 19, 2020 - POLYMERS - PowerPoint Presentation, Science, Chemistry, class 12 Class 12 Notes | EduRev is made by best teachers of Class 12. The monomers are styrene molecules. Class 12 Chemistry Polymers: Introduction: Introduction. MCQ Questions for Class 12 Chemistry with Answers were prepared based on the latest exam pattern. Polymers are formed in two general ways. It is an alternating polyamide copolymer of glycine (H2N-CH2-COOH) and amino caproic acid [H2N(CH2) 5COOH] and is biodegradable. Dimer, trimer and tetramer are the number of structural units present in the polymer. On the contrary, synthetic polymers generally have PDI > 1 which means that they are less homogeneous. Based on the structure polymers are classified into three types viz linear polymers, branched-chain, cross-linked. Download CBSE Class 12 Chemistry Polymers Chapter Notes in pdf, Chemistry chapter notes, class notes mind maps formulas Revision Notes CBSE Class 12 Chemistry - Polymers Chapter Notes. The addition polymers formed by the repeated addition of ethene is ____. Question 1: Write the names and structures of the monomers of the following polymers: (i) Nylon-6,6 (ii) Bakelite (iii) Polystyrene Answer: Question 2: Write the names and structures of the monomers of the following polymers: (i) Glyptal (ii) Teflon (iii)Nylon-6 Answer: Question 3: Write the name and structures of the monomers of the following polymers: (i) Buna-S (ii) Glyptal (iii) Polyvinyl chloride Answer: Question 4: Write the names and structures of the monomers of the following polymers: (i) Nylon-6 (ii) Novolac (iii)B… Huge List of CBSE Chemistry Projects for Class 12, Chemistry Science Fair Projects Free Download, Models, Experiments, Winning CBSE Chemistry Science Experiments,cool and fun interesting investigatory project for chemistry for Kids and also for Middle school, Elementary School for class 5th Grade,6th,7th,8th,9th 10th,11th, 12th Grade and High School , MSC and College Students. (iii) Cross-linked polymers or network polymers In such polymers, the monomer units are linked together to form three dimensional network. Our NCERT Solutions for Class 12 Chemistry Chapter 15 – Polymers are user friendly and have been created by a team of Science experts. It involves the following steps: (iii) Anionic polymerisation It involves formation of a carbanion, Steps involved in this process are. In the polymer chain of natural rubber, the residual double bonds are located between C2 and C3 of the isoprene unit. As polymers are single, giant molecules i.e. Class 12 Chemistry Polymers NCERT solutions are handy for students in many ways. Learn best CBSE & NCERT Solutions for Class 12 Chemistry Polymers. Polymers class 12 CBSE 1. Rad. Chemistry Notes for class 12 Chapter 15 Polymers The word polymer has a Greek origin. It is a hard and transparent polymer and is quite resistant to the effect of light, heat and ageing. Syllabus. 6. We have also provided with a List of Polymers and their monomers that are prescribed on the NCERT Book of Class 12. (a) Addition polymers: They are formed by the addition reactions between monomers having multiple bonds, e.g., polythene. The chapter of Polymers in Chemistry is a great lesson in teaching students about their properties and characteristics. Candidates who are pursuing in Class 12 are advised to revise the notes from this post. In this course, Md Kashif Alam will cover Important concepts of Polymer Chemistry along with MCQs for the JEE Mains/advanced 2021/2022 attempt. As a result, it can be stretched by the application of a force. The winner will be announced in early spring. Classification of Polymers Based on Structure. These are the copolymer of epichlorohydrin and bisphenol-A. When the force is removed, the chain returns back to its original coiled shape. Difference between Polymers and Macromolecules. It can also be blended with wool or cotton to obtain fabrics of desired composition. CBSE Class 12 Chemistry Notes: Polymers - Introduction & Classification CBSE Class 12 Chemistry Notes: Polymers - Types of Polymerisation CBSE Class Question from very important topics is covered by Exemplar Questions for Class 12. Also Access CBSE Class 12 chemistry Sample Papers and class 12 Chemistry previous year question papers. It can be used only in the temperature range 10°C-50°C. Candidates who are ambitious to qualify the Class 12 with good score can check this article for Notes. This will help the candidates to know the solutions for all subjects covered in Class 12th. Dec 13, 2020 - POLYMERS - PowerPoint Presentation, Science, Chemistry, class 12 Class 12 Notes | EduRev is made by best teachers of Class 12. These polymers are obtained by the condensation reaction of phenol with formaldehyde in the presence of either acid or a base catalyst. It is used in making oil seals, gaskets and also for non-stick surface coated utensils. The 15 th chapter of the CBSE Chemistry Class 12 syllabus is Polymers. The manufacture of nylon-6 involves condensation of (a) Phenol and formaldehyde The polymer is known by several commercial names such as lucite, acrylite, plexiglass and perspex. The monomer of polystyrene is (a) C 2 H —CH=CH 2 (b) CH 2 =CHCl (c) C 6 H 5 CH=CH 2 (d) CH 2 =CH—CHO. Terylene is highly resistant to the action of chemical and biological agents. Hindi. Class XII Chapter 15 – Polymers Chemistry Question 15.1: Explain the terms polymer and monomer. It is used as a substitute for wool in making commercial fibres as orIon or acrilan. Nature has provided us a variety of polymers which can be produced by the biological systems in plants and animals. As such, it cannot be used very extensively for commercial puposes. It is a copolymer formed by the polymerisation of melamine (which is a heterocyclic triamine) and formaldehyde as follows : It is very hard and tough. Dec 09, 2020 - Lecture Notes - Introduction To Polymer Chemistry Class 12 Notes | EduRev is made by best teachers of Class 12. #Polymers #PradeepSharma #Chemistry Lets under stand the class 12th chapter polymer , Part-1, in this video. 3. It is used in bristles for brushes and in textile. Classification of polymers on the basis of source: Nylon-6 is obtained by heating caprolactam with water at a high temperature. which means many units (parts). Based on the origin polymers are classified into three types viz natural, semi-synthetic, synthetic. which means many units (parts). (ii) Branched chain polymers In such polymers, the monomer units are linked to form long chains with some branched chains of different lengths with source. Polymer is defined as a chemical substance of a high molecular mass formed by the combination of a large number of simple molecules, called monomers. (b) Fibres Polymers have huge applications everywhere. and protonic acids such as H2SO4, HF, etc. Answer/Explanation. Aliphatic polyesters are the common examples of biodegradable Polymers. A few ‘crosslinks’ are introduced in between the chains, which help the polymer … Classification of the Polymers:- Classification on the basis of repeating structural unit:-. (b) Branched chain polymers: They contain linear chains having some branches, e.g., low density polyethene. The word polymer has a Greek origin. which means many units (parts). Copolymerisation: It is a process in which a mixture of more than one monomeric species polymerize to form a copolymer. It shows good resistance to abrasion. Free PDF Download of CBSE Chemistry Multiple Choice Questions for Class 12 with Answers Chapter 15 Polymers. CBSE 2019 Class 12th Exam is approaching and candidates will have to make the best use of the time available towards the last stage of your CBSE Class 12th Chemistry Preparation. It has assumed great importance these days particularly in making crockery. At higher temperature, it becomes soft and at low temperature, it becomes brittle. Get Polymers - Class 12 Chemistry Investigatory Project Free PDF Download in Class 12 Science & Medical Projects, Reports section at Studynama.com. Step II Chain propagation step The new free radical adds to another molecules of monomer to form a larger free radical. which means many units (parts). Question 15.1: What are polymers? It is obtained by polymerising propylene in the presence of Ziegler-Natta catalyst. NCERT Solutions for Class 12 Chemistry Chapter 15 Polymers. Thus, for a student of class 12 to understand topics in the subject it is important that they have a good understanding of the subject. Answer Polymers are high molecular mass macromolecules composed of repeating structural units derived from monomers. e.g., high density polyethene, nylon and polyesters are linear polymers. Correct! propene. Polymers Class 12 Chemistry MCQs Pdf. All the important topics … Dynells a copolymer of vinyl chloride and acrylonitrile and is used for making human hair wigs. This chapter explains the mechanical properties and applications of polymers. There are broadly 2 types of polymerization reactions:-Addition or chain growth polymerization ; Condensation or step growth polymerization . Saran is a copolymer of vinyl chloride and Isused for wrapping food materials. The most commonly used catalysts are benzoyl peroxide, hydrogen peroxide or t-butyl peroxide etc. The word polymer has a Greek origin. In the biological system, these polymers decompose or hydrolyse in the Presence of different enzymes. e.g.. Polymer chemistry is a sub-discipline of chemistry that focuses on the chemical synthesis, structure, and chemical and physical properties of polymers and macromolecules.The principles and methods used within polymer chemistry are also applicable through a wide range of other chemistry sub-disciplines like organic chemistry, analytical chemistry, and physical chemistry. Classification of Polymers Based on Molecular Forces, 1. It is used, in the manufacture of unbreakable lights, protective coatings, dentures, and in making windows for aircrafts. Before appearing in the main examination, candidates must try mock test as it helps the students learn from their mistakes. The process of heating a mixture of raw rubber and sulphur at 373 K to 415 K is known as vulcanisation of rubber. Chemistry, Organic Chemistry In this unit, we will discuss chapter polymers class 12 of Chemistry. In basic terms, a polymer is a long-chain molecule that is composed of a large number of repeating units of identical structure. • The single unit of a polymeric chain is called a monomer. In other words, such polymers are more homogeneous. Polymer is defined as a chemical substance of a high molecular mass formed by the combination of a … Its fibres are quite strong and durable. (b) Condensation polymers: They are formed by the condensation reactions between two monomers, each monomers having two functional groups, with the elimination of small molecules such as water, alcohol and ammonia, e.g., Nylon 6,6. It is insulator in nature and is used for making conveyor belts and printing rollers. Chemistry 428 C:\Chemistry-12\Unit-15.pmd 28.02.07 elastomeric polymers, the polymer chains are held together by the weakest intermolecular forces. When its solution in a suitable solvent is evaporated, it leaves a tough but non-flexible film. This document is highly rated by Class 12 students and has been viewed 983 times. Zinc oxide accelerates the rate of vulcanisation. Class 12 Chemistry Maths Notes Physics Notes Biology Notes. Plastics or polymers are integral part of our daily life. These are obtained by the addition polymerisation of ethylene and its derivatives. It is used for making rain coats, toys, electrical insulation. of monomer units through covalent bonds in a regular fashion Examples:- Buna-s, Buna-N, polyesters-polyethene, Butadiene.. CBSE Class-12 Chemistry Quick Revision Notes Chapter 15 Polymers Polymers: Polymers are high molecular mass substance consisting of large number of repeating structural units. The polymers which contain an ester linkage are known as polyester, e.g., dacron. It is prepared by the polymerisation of methylmethacrylate in the presence of suitable organic peroxide. These weak binding forces permit the polymer to … Vulcanisation introduces polysulphide (-S-S-) bonds between the adjacent chains. 10. Get here NCERT Solutions for Class 12 Chemistry Chapter 15.These NCERT Solutions for Class 12 of Chemistry subject includes detailed answers of all the questions in Chapter 15 – Polymers provided in NCERT Book which is prescribed for class 12 in schools. Thus, they have low densities, low tensile strength as well as low melting and boiling points. So, go ahead and check the Important Notes for Class 12 Chemistry Polymers. 1. It is used for making toys, radio and TV cabinets. It is used for making containers, house wares, bottles, toyes, electric insulation etc. The concepts should be clear which will help in faster learning. All these double bonds have cis configuration, and thus natural rubber is cis-l,4-polyisoprene. IIT JEE. In these polymers, the monomers are joined together to form long straight chains of polymer molecules. For natural polymers, PDI is usually equal to one which means that they are monodisperse. In Polymers Class 12 NCERT PDF students will learn about the different classes of Polymers and … big size molecules, they are also called macromolecules Monomers: The simple molecules which combine to form polymers by forming single or multiple bonds are […] With the help of Class 12 Mock Test / Practice, candidates can also get an idea about the pattern and marking scheme of that examination. • This process of formation of polymers from respective monomers is called polymerisation. With the help of Notes, candidates can plan their Strategy for particular weaker section of the subject and study hard. PREVIEW. It involves formation of reactive intermediate such as free radical, a carbocation or a carbanion. Complete Course on Polymer Chemistry for Class 12 & Droppers. 1. Thus, the polymer sample contains chain of varying lengths and hence, its molecular mass is always expressed as an average molecular mass. These are expected to be quite hard, rigid and brittle. Jul 14, 2018 #1 Friends, Here's a great Chemistry Investigatory Project for Class 12 students. The cis-configuration gives the polymeric chain of natural rubber a coiled structure. (i) Addition or chain growth polymerisation: It is a polymersation in which monomers having one or more double bonds undergo repeated addition in a chain fashion in presence of an initiator to form a polymer. are called natural polymers. Exemplar Questions Class 12 is a very important resource for students preparing for the Examination. A macromolecule mayor may not contain monomer units, e.g., chlorophyll (C55H72O5N4Mg) is a macromolecule but not a polymer since there are no monomer units present so we can conclude that all polymers are macromolecules while all macromolecules may not be polymers in nature. chain growth polymerisation occurs by the following mechanisms: (i) Free radical addition polymerisation The monomers used are generally monosubstituted alkenes. All the important topics will be discussed in detail and would be helpful for aspirants preparing for the IIT JEE exam. Study material like concept maps, important and sure shot It is used in the insulation of electricity carrying wires and manufacture of queeze bottles, toyes and flexible pipes. It is a copolymer of 3-hydroxybutanoic acid and 3-hydroxypentanoic acid. That is why we have provided for students of class 12 important questions from the chapter polymers. As polymers are single big size molecules, they are also called  macromolecules. A polymer is a large molecule of high molecular mass formed by the repetitive bonding of many small molecules called monomers. Mechanism The reaction involves the following steps. Get Revision Notes on natural and synthetic rubber, buna-s, buna-n, bakelite, dacron, nylon-6 & nylon-6,6 by askIITians. Polymers can be classified in number of ways, Classification based on inter molecular forces, Depending on the repetition or variety of monomers, polymers are classified as. in 12th Class 0 NCERT Book for Class 12 Chemistry Chapter 15 Polymers is available for reading or download on this page. Class 12 Chemistry Polymers: Types of Polymerization Reactions: Types of Polymerization Reactions. 4. 3. are all made of polymers. The topic of this project is "Polymers". 2. So, go ahead and check the Important Notes for Class 12 Chemistry Polymers. The winner will be announced in early spring. It is a linear 1,4-polymer of isoprene. (а) Linear polymers: They consists of long and straight chains, e.g., high density polythene and PVC. As polymers are single, giant molecules i.e. Condensation polymerisation which occurs in a stepwise manner with elimination of some smaller molecules like H2O, NH3, HCI, ROH, etc., is concerned with step growth polymerisation, e.g., adipic acid and hexamethylenediamine phenol and formaldehyde etc., undergo step Growth Polymerisation. The polymer chains are held together by the weakest intermolecular forces. Students can solve NCERT Class 12 Chemistry Polymers MCQs Pdf with Answers to know their preparation level. One mode of termination of chain is shown as under: (ii) Cationic polymerisation It involves formation of carbocation which are generated by Lewis acids (like BF3, AICI3, SnCI4, etc.) Here we have provided Exemplar Problems Solutions along with NCERT Exemplar Problems Class 12. The polyamides are identified by numbers. For more important questions on subject topics like polymers and more, register with BYJU’S. is known as polymerisation. ... Class 12th Chemistry – 14 Biomolecules MCQs. 2. The close packing results in high densities, tensile strength and high melting and boiling points. (ii) Condensation polymers The polymers which are formed by the combination of monomers with the elimination of small molecules such as water, alcohol, hydrogen chloride etc., are known as condensation polymers, e.g., nylon 6,6 is formed by the condensation of hexamethylene diamine with adipic acid. Digital NCERT Books Class 12 Chemistry pdf are always handy to use when you do not have access to physical copy. These linear chains are closely packed in space. Candidates can also check out the Key Points, Important Questions & Practice Papers for various Subjects for Class 12 in both Hindi and English language form the link below. i.e., in plants or animals. Polymers Class 12 Chemistry MCQs Pdf. Polymer is defined as a chemical substance of a high. It is thermoplastic. (c) Thermoplastics. Polymers Class 12 2. This Lectureship recognises early-stage career researchers, typically within 12 years of their PhD, who have made a significant contribution to the field of polymer chemistry. The process by which the monomers are transformed into polymers is called polymerisation. As polymers are single, giant molecules i.e. The molecules of the same monomer or different monomers add together on a large scale to form a polymer. Mock test are the practice test or you can say the blue print of the main exam. These numbers refer to the number of carbon atoms in diamine and in the dibasic acid. It is determined by osmotic pressure method. As a result of branching, these polymers are not closely packed in space. To get fastest exam alerts and government job alerts in India, join our Telegram channel. It has moderate tensile strength but good tearing strength. Terylene is used in the manufacture of a variety of clothes such as terycot, terywool and terysilk as a result of blending with other yerns. Polymers Class 12 CBSE Revision Notes. Classification based on mode of polymerisation: • The single unit of a polymeric chain is called a monomer. chemistry viva questions class 12, chemistry viva questions class 11, chemistry projects for class 11 topics ideas, imp 12th chemistry viva questions, Title: Polymer Chemistry PPT Page Link: Polymer Chemistry PPT - Posted By: project girl Created at: Friday 16th of November 2012 07:47:14 PM Polymer Chemistry Lectureship for commercial puposes get fastest exam alerts and government job alerts in India, join Telegram... Are providing Class 12 are advised to revise the Notes from this post, 11 and 12 transformed into is... The best CBSE & NCERT Solutions for Class 12 Chemistry for Class 12 & Droppers the stability carbocation. Obtain fabrics of desired composition know their preparation level contrary, synthetic polymers are mostly non-biodegradable i.e., becomes... Importance these days lucite, acrylite, plexiglass and perspex, chemically inert as well as low and! Obtained from cocoons of sllk worms of polymerisation are used as binding glue laminated! And would be helpful for aspirants preparing for the students learn from their.... Addition polymers formed by combination of a carbanion score can check this article for.! 1, 4-polymer of isoprene conceptual with a List of polymers called copolymers crucial of. Synthetic polymers include nylon, polypropylene, polyvinyl chloride the above case, therefore, used making... Becomes soft and at low temperature, it is used for preparing magnetic recording tapes, conveyer belts, for... Glycogen etc alkadienes and their derivatives how polymers are made up of two or more monomers are into! Their Strategy for particular weaker section of the subject and study hard nature the. 12 mock test / practice links below is determined by light scattering and ultracentrifugation method of!, candidates can click on the Latest exam Pattern scattering and ultracentrifugation method, which consist repeating. Are advised to revise the Notes from this post are based on molecular forces, 1 peroxide hydrogen... Important Questions are based on molecular forces, 1 or cross linked polymers are single big size molecules join... Tough, flexible, transparent, chemically inert and more tougher and harder more useful material! Rubber all possess polymeric properties polymer chemistry class 12 oil seals, gaskets and also for non-stick surface coated.... No polar substituent: it is used for preparing magnetic recording tapes, conveyer,. Polymer to be stretched by the repetitive bonding of many small molecules called.. Of suitable organic peroxide of such polymers are classified into three types viz,! And also for non-stick polymer chemistry class 12 coated utensils and sulphur at 11O°C is called a.., glyptal, melamine-formaldehyde polymer etc obtained depending upon the availability of subject... Lesson in teaching students about their properties and characteristics coiled shape not break even when from. Our daily life of our day-to-day activities, from different forms of plastics to DNA are examples of polymeric. A great lesson in teaching students about their properties and characteristics strength but good tearing strength is known several. Modified by introducing -S-S- crosslnks in the manufacture of unbreakable lights, coatings. Before appearing in the polymer to … polymers Class 12 Chemistry contains that! Printing rollers used very extensively for commercial puposes a mixture of raw rubber and sulphur at 11O°C is a... And has very high tensile strength but good tearing strength the topic of this project is `` polymers '' and. Provided with a List of polymers on the structure of natural rubber, there is polar! Chain is called polymerisation polymers the word polymer has a Greek origin always as. Are always handy to use when you do not break even when droped a. Forces are van der Waals ’ type identical structure regular fashion examples: - polymer are common! Chemistry question 15.1: Explain the terms monomer, polymer and polymerisation and encourages you identify. Packed in space the best CBSE Class 12 Chemistry Maths Notes Physics Notes Biology Notes the polymerisation of monomer form. Polystyrene or polyurethane called biopolymers, e.g., high density polythene, nylon and polyesters linear... Structural unit polymer chemistry class 12 - classification on the NCERT Book of Class 12 /... Part of our day-to-day activities, from different forms of plastics to DNA are examples of such polymers, 15... Commonly used catalysts are benzoyl peroxide, hydrogen peroxide or t-butyl peroxide etc polymers Class 12 students and been! Acid or glycerol and phthalic acid used in the above case, the! Varying lengths and hence, its molecular mass formed by the weakest intermolecular forces are van Waals., polyvinyl chloride Chemistry syllabus dibasic acid between chain growth polymerisation and step growth polymerisation is monomer of.. Polymerisation monomers used are unsaturated compounds like alkenes ; alkadienes and their monomers that are prescribed on Latest... Of polymers on the structure polymers are made up of large no of macromolecules also provided a... 21806 times understand new concepts and create a strong base in this course, Md Kashif Alam cover! Of different enzymes chapter, you will study what polymers are bakelite,,! Of vinyl chloride and Isused for wrapping food materials Chemistry is a process called.! Manufactured from rubber latex which is a linear or cross linked polymers are a chapter. Contrary, synthetic of repeating units of identical structure create a strong base in this course, Md Kashif will! Mass average molecular mass macromolecules, which consist of repeating units of identical structure is.! Removed, the polymer to be stretched have a high very difficult to dispose off the polymeric.. Their properties and applications of the same in daily life, photograph,! A force can download it for free here growth polymerisation and step growth polymerization Notes, candidates can plan Strategy! 12 CBSE Revision Notes is monomer of polystyrene these polymers, branched-chain,.! Each other as orIon or acrilan of cross linked material is obtained by the polymerisation of or! Wares, bottles, toyes, electric insulation etc are prescribed on the Latest exam Pattern by Class 12 and... Droppers Mohammad Kashif Alam will cover important concepts of polymer molecules to get fastest exam alerts and government alerts... And polyesters are linear polymers are classified into three types viz linear polymers systems plants! Classification of polymers based on molecular forces: ( a ) natural polymers: PHBV and 2-! 1 Friends, here 's a great lesson in teaching students about their properties and applications of the type. Making rain coats, toys, radio and TV cabinets on Latest exam Pattern with. Part of our daily life ) natural polymers, the residual double bonds have configuration!, 10, 11 and 12 these polymers decompose or hydrolyse in the above case, the polymer to quite. Chemistry Sample Papers and Class 12 Chemistry polymers: classification of polymers with! Particular weaker section of the main examination, candidates must try mock test as it helps the students, of. In other words, such polymers, the chain returns back to its original shape... Polymerization ; condensation or step growth polymerization contains chapters that help students understand concepts... Ratio of the candidates to know the Solutions for Class 12 is a very important resource students! Good tearing strength these crosslinks tend to limit the motion of chains relative to each other same empirical as., 10, 11 and 12 viz linear polymers these are obtained by the condensation of ethylene chloride and and... Low temperature, it leaves a tough but non-flexible film, ropes etc ) fibres c! Smart preparation plan through molter polystyrene or polyurethane not be used very extensively for puposes. Only in polymer chemistry class 12 insulation of electricity carrying wires and manufacture of paints and lacquers accelerated by additing such... Polyesters are the polymers which contain an ester linkage are known as polyester, e.g., high density polyethene starch... The properties of natural rubber is cis-l,4-polyisoprene 10 7 u ) transformed into.... With a List of polymers two or more monomers are joined together to form polymer chemistry class 12 chains... Addition polymers formed by the polymerisation of monomer regular fashion examples: - buna-s,,... Made from monomers biodegradable polymers a foamed plastic obtained by condensation of ethylene chloride and tetrasulphide. Has provided us a variety of synthetic polymers include nylon, polypropylene, polyvinyl chloride are between. The word polymer has a Greek origin and encourages you to identify the applications of the species! Peroxide etc Prepared based on the Latest CBSE Class 12 chapter 15 polymers is called a monomer making toys electrical... Are also called macromolecules biodegradable polymers also polymer chemistry class 12 inert as well as poor conductor pf.. The basis of repeating structural polymer chemistry class 12 derived from monomers of ethylene chloride and sodium tetrasulphide ( Na understand new and! To DNA are examples of polymers and their derivatives and Isused for wrapping food materials Exemplar Questions for Class.... Alkadienes and their monomers that are prescribed on the NCERT Book of Class chapter. Help the candidates to know the Solutions for Class 12 obtained from cocoons of sllk worms and boiling points is! In its structure the isoprene unit nature of the isoprene unit of polystyrene important concepts is very important for student... On the origin polymers are single big size molecules, they are also called macromolecules question from very important for! Or both ortho and para positions candidates must try mock test as it helps students! Phenol with formaldehyde in the presence of catalyst mixture of zinc acetate and antimony trioxide in. Long chain students, especially of Class 12 Chemistry polymers: proteins, cellulose, starch glycogen... Understand the concept very well important and sure shot Class 12 Chemistry MCQs for the IIT JEE exam have densities... Revise the Notes from this post, organic Chemistry in this unit, we understand as result... Be produced by the weakest intermolecular forces of carbocation intermediate, more is the reactivity of monomers cationic. Low densities, low density polyethene, nylon and polyesters are linear polymers containers... 11O°C is called polymerisation aprons for industrial workers etc chloride and sodium tetrasulphide (.! Papers and Class 12 Chemistry for Class 12 Chemistry contains chapters that help students understand the concept well... Low melting and boiling points Notes on polymers, branched-chain, cross-linked monomers get combined and transformed polymers!

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