It is a thermoplastic polymer that has a high softening point (600K). Example of copolymerization is the process of forming polymer Buna-S from 1, 3-butadiene and styrene. Buna − S is a copolymer of 1, 3−butadiene and styrene. Option 3) Teflon. Classification Based on Molecular Forces Polymers can also be classified on the basis of mode of polymerisation into two sub groups. Question 15.6: Arrange the following polymers in increasing order of their intermolecular forces. Options (a) Nylon, buna-S (b) Teflon, buna-N (c) Nylon 6,6, dacron (d) Neoprene, buna-S. 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 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. It is inert to most chemicals with the exception of fluorine and molten alkali metals. Gasket & Polymer Co. specializes in Buna S Polypak. Describe what is meant by a condensation polymer. Condensation Polymerization: Example, Nylon -6, 6, perylene, polyesters. Buna-S, which is formed by polymerisation of buta–1, 3–diene and styrene is an example of copolymer formed by addition polymerisation. The urethane functional groups are similar to … We hope the given Chemistry MCQs for Class 12 with Answers Chapter 15 Polymers will help you. 3.2k VIEWS. Which compound form linear polymer … known as condensation polymers, e.g., nylon 6,6 is formed by the condensation of hexamethylene diamine with adipic acid. 3.1k SHARES.  Synthetic scheme of Buna-S Rubber  Buna-S Rubber: It is a random co-polymer formed by the emulsion polymerisation of a mixture of 1:3 butadiene and styrene in the presence of peroxide catalyst at 5 degree Celsius and therefore the product is called as cold rubber. Which of the following is not a condensation polymer ? Condensation Polymers These polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. Correct Answer: Nylon 6,6, dacron. It is a thermoplastic polymer. Condensation Polymerisation: ... there are multiple units of every monomer. The word ‘ Polymer’ is coined from two Greek words: ... (Buna - S) are examples of man-made polymers. BUNA-S. Condensation polymer It is not a polymer ... Buna-S is a polymer of : 2:11 1.3k LIKES. NCERT Exemplar Problems Maths Physics Chemistry Biology. Which one of the following is not a condensation polymer? Answer: • Condensation polymers are made from two different monomers. Homomer: In this type, a single type of monomer unit is present. Also, it withstands high temperatures. 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 SHARES. Bakelite CH 2 CH 2 OH OH H C 2CH 2 Butadiene and styrene are called as primary monomer. 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. Question 15.5: Explain the difference between Buna-N and Buna-S. Answer Buna − N is a copolymer of 1, 3−butadiene and acrylonitrile. MCQs Of Polymer chemistry 1. The formation of copolymer Nylon 6, 6 is from adipic acid and hexamethylenediamine. For example, nylon -6, 6 Classification Based on Monomers. Example: Buna-S, Buna-N, etc. The polymer used for coating electrical wires, cables etc is … 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. option (4) is correct. 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. Condensation polymers are formed by condensation of two or more bifunctional monomers with the elimination of simple molecules like H 2 O, NH 3, alcohol, etc. (A) Nylon-66 (B) PTFE (C) Dacron (D) Glyptal. 3.1k VIEWS. 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. Explanation: No explanation available. ... Condensation Polymers: The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. Buna-S rubber is one of the commonly used synthetic rubber. A. Dacron B. Neoprene C. Melamine D. Glyptal 2. Nevertheless, the polymer clearly forms by a step-growth process. Which is correct example of condensation polymer . Condensation Polymers 1. It is used in the manufacture of unbreakable crockery. Check Answer and Solution for above question from ... Melamine formaldehyde polymer is formed by the condensation polymerisation of melamine and formaldehyde. Buna-S or Buna-N is an example of copolymer. Nylon 6,6 is a condensation polymer of hexamethylene diamine and adibic acid. The process of forming polymer Buna−S from 1, 3-butadiene and styrene is an example of copolymerization. polymer to be stretched. A hydrogen moves from the alcohol to the nitrogen, while the oxygen links to the carbon. For your custom Buna S Polypak design, or reverse engineering, our exemplary service and efficient production ensures prompt deliveries coupled with outstanding service. C.T. 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 2. Answer: b. What does the part ‘6, 6’ mean in the name nylon-6, 6? Question 2. Classify the following as addition and condensation polymers Nylon 6,6, Buna-N,Buna-S,Polythene,Polystyrene,Polyvinyl chloride 3) Buna-S 4) Poly (ethyl acrylate) 58. In this article, I shall describe some of the essential principles of condensation polymerizations or more appropriately called Buna - S, Teflon & Neoprene are condition polymer. The process of forming polymer Buna−S from 1, 3-butadiene and styrene is an example of copolymerization. Nylon-6,6 or Nylon-6 is an example of condensation polymer. 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. Be the first to write the explanation for this question by commenting below.. Related Questions: Fibres Fibres are the thread forming solids which possess high tensile strength and high modulus. Question 60: Identify the four groups into which the polymers are classified on the basis of the magnitude of intermolecular forces present in them. Classification of Polymers Based on Molecular Forces 1. (Delhi, All India 2009) Answer: Nylon ‘6,6’ implies that it is a condensation polymer of two types of monomer molecules each containing six carbon atoms i.e. For example, Polyethene; Heteropolymer or co-polymer: It consists of different type of monomer units. The examples are buna-S, buna-N, neoprene, etc. Condensation Polymer:-The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. • When these monomers react, small molecules such as water are lost 2. Option 4) Nylon 6,6 Buna-S, Buna-N. Technically polyurethane is not a condensation polymer since no molecules are lost, but the functional group does rearrange. • Each monomer has two of the same functional groups. Condensation polymers: Terylene, bakelite. Chemistry MCQs for Class 12 with Answers Chapter 15 Polymers - … Option 1) Buna - S. Option 2) Neoprene. We hope the Answer. e) Nylon - 66: This is a condensation polymer that is formed from a reaction between adipic acid and hexamethylenediamine. To which group or groups do polythene and bakelite belong? Draw the repeating unit for a condensation polymer. 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