In this article, I shall describe some of the essential principles of condensation polymerizations or more appropriately called Classification Based on Monomers. polymer to be stretched. 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. We hope the given Chemistry MCQs for Class 12 with Answers Chapter 15 Polymers will help you. Correct Answer: Nylon 6,6, dacron. Nylon 6,6 is a condensation polymer of hexamethylene diamine and adibic acid.  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. Fibres Fibres are the thread forming solids which possess high tensile strength and high modulus. MCQs Of Polymer chemistry 1. We hope the Bakelite CH 2 CH 2 OH OH H C 2CH 2 For example, nylon -6, 6 (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. 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. The polymer used for coating electrical wires, cables etc is … NCERT Exemplar Problems Maths Physics Chemistry Biology. Nylon-6,6 or Nylon-6 is an example of condensation polymer. Buna - S, Teflon & Neoprene are condition polymer. Buna-S rubber is one of the commonly used synthetic rubber. The process of forming polymer Buna−S from 1, 3-butadiene and styrene is an example of copolymerization. A hydrogen moves from the alcohol to the nitrogen, while the oxygen links to the carbon. ... Melamine formaldehyde polymer is formed by the condensation polymerisation of melamine and formaldehyde. e) Nylon - 66: This is a condensation polymer that is formed from a reaction between adipic acid and hexamethylenediamine. Example: Buna-S, Buna-N, etc. 3.1k SHARES. Classify the following as addition and condensation polymers Nylon 6,6, Buna-N,Buna-S,Polythene,Polystyrene,Polyvinyl chloride Condensation polymers: Terylene, bakelite. The word ‘ Polymer’ is coined from two Greek words: ... (Buna - S) are examples of man-made polymers. 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. The urethane functional groups are similar to … 3.2k SHARES. Draw the repeating unit for a condensation polymer. Which is correct example of condensation polymer . Buna-S, Buna-N. Which one of the following is not a condensation polymer? known as condensation polymers, e.g., nylon 6,6 is formed by the condensation of hexamethylene diamine with adipic acid. A. Dacron B. Neoprene C. Melamine D. Glyptal 2. Question 15.6: Arrange the following polymers in increasing order of their intermolecular forces. Classification Based on Molecular Forces Polymers can also be classified on the basis of mode of polymerisation into two sub groups. 2. Answer. Homomer: In this type, a single type of monomer unit is present. It is a thermoplastic polymer. Buna − S is a copolymer of 1, 3−butadiene and styrene. • When these monomers react, small molecules such as water are lost 2. 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. The formation of copolymer Nylon 6, 6 is from adipic acid and hexamethylenediamine. 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. 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 Question 2. Answer: b. Buna-S or Buna-N is an example of copolymer. With over 100 years of engineering expertise we are dedicated to offering the highest quality Buna S Polypak and other products. 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. Answer: Which of the following is not a condensation polymer ? Option 3) Teflon. Question 15.5: Explain the difference between Buna-N and Buna-S. Answer Buna − N is a copolymer of 1, 3−butadiene and acrylonitrile. Buna - rubber is a copolymer of 2:44 900+ LIKES. It is inert to most chemicals with the exception of fluorine and molten alkali metals. 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. Option 1) Buna - S. Option 2) Neoprene. Addition Polymers Condensation polymer It is not a polymer ... Buna-S is a polymer of : 2:11 1.3k LIKES. The examples are buna-S, buna-N, neoprene, etc. Condensation Polymerization: Example, Nylon -6, 6, perylene, polyesters. Example of copolymerization is the process of forming polymer Buna-S from 1, 3-butadiene and styrene. Be the first to write the explanation for this question by commenting below.. Related Questions: Condensation Polymer:-The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. Check Answer and Solution for above question from Describe what is meant by a condensation polymer. 3.1k VIEWS. 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. ... Condensation Polymers: The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. Chemistry MCQs for Class 12 with Answers Chapter 15 Polymers - … Condensation Polymerisation: ... there are multiple units of every monomer. C.T. To which group or groups do polythene and bakelite belong? The process of forming polymer Buna−S from 1, 3-butadiene and styrene is an example of copolymerization. 3.2k VIEWS. Also, it withstands high temperatures. 3) Buna-S 4) Poly (ethyl acrylate) 58. For example, Polyethene; Heteropolymer or co-polymer: It consists of different type of monomer units. Butadiene and styrene are called as primary monomer. Condensation Polymers These polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. option (4) is correct. Options (a) Nylon, buna-S (b) Teflon, buna-N (c) Nylon 6,6, dacron (d) Neoprene, buna-S. Explanation: No explanation available. What does the part ‘6, 6’ mean in the name nylon-6, 6? 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. For your custom Buna S Polypak design, or reverse engineering, our exemplary service and efficient production ensures prompt deliveries coupled with outstanding service. Classification of Polymers Based on Molecular Forces 1. It is a thermoplastic polymer that has a high softening point (600K). Nevertheless, the polymer clearly forms by a step-growth process. Option 4) Nylon 6,6 (A) Nylon-66 (B) PTFE (C) Dacron (D) Glyptal. Gasket & Polymer Co. specializes in Buna S Polypak. Which compound form linear polymer … BUNA-S. Technically polyurethane is not a condensation polymer since no molecules are lost, but the functional group does rearrange. • Condensation polymers are made from two different monomers. 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