Buna - rubber is a copolymer of 2:44 900+ LIKES. C.T. Classification of Polymers Based on Molecular Forces 1. 3.2k SHARES. Question 2. Dacron is formed from ethylene glycol and terephthalic acid with the removal of H 2 O. Nylon 6, 6 is formed from hexamethylenediamine and adipic acid with the removal of H 2 O. e) Nylon - 66: This is a condensation polymer that is formed from a reaction between adipic acid and hexamethylenediamine. Condensation Polymerization: Example, Nylon -6, 6, perylene, polyesters. 3) Buna-S 4) Poly (ethyl acrylate) 58. It is inert to most chemicals with the exception of fluorine and molten alkali metals. Buna − S is a copolymer of 1, 3−butadiene and styrene. The process of forming polymer Buna−S from 1, 3-butadiene and styrene is an example of copolymerization. Classify the following as addition and condensation polymers Nylon 6,6, Buna-N,Buna-S,Polythene,Polystyrene,Polyvinyl chloride • When these monomers react, small molecules such as water are lost 2. Example: Buna-S, Buna-N, etc. Answer: Condensation polymers: Terylene, bakelite. Question 15.5: Explain the difference between Buna-N and Buna-S. Answer Buna − N is a copolymer of 1, 3−butadiene and acrylonitrile. Draw the repeating unit for a condensation polymer. Condensation polymers are formed by polycondensation, when the polymer is formed by condensation reactions between species of all degrees of polymerization, or by condensative chain polymerization, when the polymer is formed by sequential addition (by condensation reaction) of monomers to an active site in a chain reaction. 3.2k VIEWS. For example, Polyethene; Heteropolymer or co-polymer: It consists of different type of monomer units. The polymer used for coating electrical wires, cables etc is … ... Condensation Polymers: The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. Classify the above polymers as: Addition or Condensation polymers Homopolymers or Copolymers Fibres, Elastomers, Thermoplastics or Thermosetting polymers e) Write the polymerisation reactions of the followtng polymers Buna-N Buna-S Nylon-6 6 , Nylon-6, Nylon-2 nylon-6 Dacron or Terylene Teflon, Polythene, Polyvinylchloride Polystyrene Polyacrylonttnle - Chemistry - Polymers For example, nylon -6, 6 The polymer used in manufacture of electrical goods such as switches, plugs etc is 1) Polythene 2) Bakelite 3) Melamine formaldehyde resin 4) Neoprene 59. Which compound form linear polymer … We hope the NCERT Exemplar Problems Maths Physics Chemistry Biology. Buna-S, Buna-N. A hydrogen moves from the alcohol to the nitrogen, while the oxygen links to the carbon. Condensation Polymerisation: ... there are multiple units of every monomer. Example of copolymerization is the process of forming polymer Buna-S from 1, 3-butadiene and styrene. Buna-S rubber is one of the commonly used synthetic rubber. Which of the following is not a condensation polymer ? To which group or groups do polythene and bakelite belong? Nevertheless, the polymer clearly forms by a step-growth process. A. Dacron B. Neoprene C. Melamine D. Glyptal 2. It is a thermoplastic polymer. The manufacture of nylon-6 involves condensation of (a) Phenol and formaldehyde (b) ... A polymer of butadiene and acrylonitrile is called (a) Buna-2 (b) Buna-N (c) Buna-S (d) Buna-A. Preparation: butadiene (about 75% by weight) and styrene (25% by weight) co-polymerize to give styrene butadiene rubber (SBR) as follows-The products formed by copolymerization show the specific properties of the monomers and hence is very useful in industry. • Condensation polymers are made from two different monomers. The examples are buna-S, buna-N, neoprene, etc. Chemistry MCQs for Class 12 with Answers Chapter 15 Polymers - … Classification Based on Molecular Forces Polymers can also be classified on the basis of mode of polymerisation into two sub groups. It is a thermoplastic polymer that has a high softening point (600K). Which one of the following is not a condensation polymer? Classification Based on Monomers. The word ‘ Polymer’ is coined from two Greek words: ... (Buna - S) are examples of man-made polymers. Nylon-6,6 or Nylon-6 is an example of condensation polymer. Options (a) Nylon, buna-S (b) Teflon, buna-N (c) Nylon 6,6, dacron (d) Neoprene, buna-S. Condensation polymer It is not a polymer ... Buna-S is a polymer of : 2:11 1.3k LIKES. 2. Answer. Buna-S, which is formed by polymerisation of buta–1, 3–diene and styrene is an example of copolymer formed by addition polymerisation. Some Condensation Polymers The difference in Tg and Tm between the first polyester (completely aliphatic) and the two nylon polyamides (5th & 6th entries) shows the effect of intra-chain hydrogen bonding on crystallinity. Describe what is meant by a condensation polymer. We hope the given Chemistry MCQs for Class 12 with Answers Chapter 15 Polymers will help you. What does the part ‘6, 6’ mean in the name nylon-6, 6? Condensation Polymers These polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. Technically polyurethane is not a condensation polymer since no molecules are lost, but the functional group does rearrange. The urethane functional groups are similar to … A few ‘crosslinks’ are introduced in between the chains, which help the polymer to retract to its original position after the force is released as in vulcanised rubber. In this article, I shall describe some of the essential principles of condensation polymerizations or more appropriately called Butadiene and styrene are called as primary monomer. Answer: b. Condensation Polymers 1. Option 1) Buna - S. Option 2) Neoprene. Buna-S or Buna-N is an example of copolymer. Which is correct example of condensation polymer . The formation of copolymer Nylon 6, 6 is from adipic acid and hexamethylenediamine. Also, it withstands high temperatures. Gasket & Polymer Co. specializes in Buna S Polypak. ... Melamine formaldehyde polymer is formed by the condensation polymerisation of melamine and formaldehyde. Homomer: In this type, a single type of monomer unit is present. Condensation polymerizations, as the name suggests, utilizes bond-forming reactions that generate a small molecule condensate, which often needs to be contin-uously removed to facilitate the formation of the polymer. 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