Polystyrene is an aromatic polymer and has many uses including protective packaging, in trays, as ⦠It is used as friction modifier. You should be able to draw a short section of a polymer given the monomer units (and vice versa). The history of PUs started in 1937 when Dr Otto Bayer of Bayer Germany invented the diisocyanate polyaddition process. This polymer can absorb 800 times it own weight of distilled water, but only 300 times its weight of tap water. Polyurethanes (PUs) are a family of condensation polymers that include the urethane (âNHCOOâ) group in the chemical structure (Figure 5.1). Privacy A polymerization process using a thermal or catalyzed reaction of styrene monomer is used to produce an amorphous polystyrene polymer. For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. Condensation polymer among the following is - (a) Teflon (b) Polystyrene (c) PVC (d) Dacron Polystyrene is a hard, brilliantly transparent, stiff resin. Polystyrene (PS) / Ë p É l i Ë s t aɪ r iË n / is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. Start studying Chem Homework Polymers. These monomer units are linked to each other either through the formation of peptide linkage, glycosidic linkage or by removal of any moiety such as a water molecule. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Answer/Explanation. [For more information about this polymer, see Ibid., Volume 1, page 216.] D) Condensation polymers contain all of the atoms of the original monomers, but addition polymers do not. Important condensation reactions are esterification, ester interchange, etherification, and amidization. Examples: Nylon, terylene, Bakelite. H2O. Neoprene is a natural rubber. POLYAMIDE Polyamides are a group of condensation polymers commonly known as nylon. & Figure \(\PageIndex{4}\): Polyvinyl chloride. General-purpose polystyrene is clear, hard, and rather brittle. Condensation polymers are formed through a condensation reaction, where molecules join together, losing small molecules as byproducts. The monomers used are lactic acid and glycolic acid. (A) Polystyrene (B) PAN (C) Neprene (D) Polyethyleneglycol terephthalate. Answer: c Explaination: (c) It ⦠Notice that n monomer molecules produce one polymer molecule with n repeat units. . Free PDF Download of CBSE Chemistry Multiple Choice Questions for Class 12 with Answers Chapter 15 Polymers. Both are formed differently, and have distinct structural features. Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Some polymers are made via condensation polymerisation. Answer to Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. It is copolymer and has ester linkage. 2. Polyisoprene is a polymer of isoprene and is ⦠What is Bakelite? Dextron is a polyacetic acid polyglycolic acid polymer. Polyesters such as PET (polyethylene terephthalate) are condensation polymers. View desktop site. Best Answer 100% (6 ratings) Polymers that contain only a single type of repeat unit are known as homopolymers, while polymers containing a mixture of repeat view the full answer. Polyvinyl chloride, Bakelite and polystyrene are some of the examples of polymers. Because the ionic strength of urine is equivalent to an 0.1 M NaCl solution, this superabsorbant polymer, which can be found in disposable diapers, can absorb up to 60 times its weight in urine. Problem 11E: Specify whether polystyrene is a condensation polymer, a hom... JavaScript is required to view textbook solutions. -It requires two like molecules. The best example is polymerization of ethylene. It is produced by the polymerization of styrene and is the most widely used plastic. Condensation polymers are formed by the combination of monomers with the elimination of simple molecules such as H 2 O or CH 3 OH. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. Polystyrene with DVB: Cross-linking between polymer chains can be introduced into polystyrene by copolymerizing with p-divinylbenzene (DVB). Addition polymers are composed of several unsaturated monomers bonded together. Show Video. The process is known as condensation polymerisation - forming water molecules together with polyester molecules. Here ethylene (ethene) is the monomer, and the corresponding linear polymer is called high-density polyethylene (HDPE). | Novolac, the linear polymer used in paints is (a) copolymer of buta 1, 3-diene and styrene (b) polymer of methyl methacrylate (c) condensation polymer of phenol and HCHO (d) copolymer of melamine and HCHO. It is an inexpensive resin per unit weight. For e.g., Nylon - 6, 6 is formed by condensation polymerization of adipic acid and hexamethylenediamine. Therefore, most polyurethane and polystyrene foams are manufactured by forcing a pressurized gas, such as nitrogen or carbon dioxide, into the polymerizing mixture. *Addition polymerization -The addition polymerization means that two monomers react with each other and no other small molecules are generated. If both moieties are difunctional, the condensation product is a linear polymer, and if at least one of the moieties is tri- or tetra-functional, the resulting polymer is a crosslinked polymer Polystyrene is used in insulation and in molded items such as coffee cups. In condensation polymerisation, a small molecule is formed as a by-product each time a bond is formed between two monomers. Polyamide. & Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. Polyester. Polystyrene can be solid or foamed. Answer. Polystyrene is ⦠View desktop site. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. Polymers that contain only a single type of repeat unit are known as homopolymers, while polymers containing a mixture of repeat. Polystyrene b. Teflon c. Polyvinychloride d. polypropylene e. dacron Polystyrene is a thermoplastic polymer. 14. There are two major types of polymers: addition polymers and condensation polymers. Condensation Polymers The synthesis of polystyrene is carried out using a reaction known as free radical polymerisation. Formation of the polyester terylene from a dicarboxylic acid (benzene-1,4-dicarboxylic acid) and diol (ethane-1,2-diol). Polystyrene is made from the monomer styrene which is a liquid petrochemical. Bakelite is a condensation polymer of phenol and formaldehyde. Terylene: Example of polyester. HDPE is composed of macromolecules in which n ranges from 10,000 to ⦠Polyethylene in plastic, and nylon, are both common polymers used every day, among several others. WBJEE 2018: A condensation polymer among the following is (A) Dacron (B) PVC (C) Polystyrene (D) Teflon. At room temperature, the thermoplastic polymer is a solid but when heated above 100 °C it flows. © 2003-2020 Chegg Inc. All rights reserved. © 2003-2020 Chegg Inc. All rights reserved. Check Answer and Solution for above question from Chemistry in Polymers - Tardigrade Which of the following is a condensation polymer ? Students can solve NCERT Class 12 Chemistry Polymers MCQs Pdf with Answers to know their preparation level. | DVB has vinyl groups (-CH=CH 2) at each end of its molecule, each of which can be polymerized into a polymer chain like any other vinyl group on a ⦠Figure \(\PageIndex{3}\): Polystyrene synthesis and structure. The formation of a polyester follows the same procedure as in the synthesis of a simple ester. Styrene consists of a benzene ring (a six membered ring with three double bonds) bonded to an ethene chain. Terms It becomes rigid again when it cools down. It is added to lubricants to reduce surface friction. The repeating structural unit of most simple polymers not only reflects the monomer(s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. The molecule most commonly split out between monomers to make a condensation polymer is The synthesis is shown below. In the repeat unit In the repeat unit above shown the R ⦠In a polymer, the monomers are linked to each other in a continuous or repetitive manner. Polyvinyl chloride (PVC) is extensively used for plumbing pipes. The only difference is that both the alcohol and the acid monomer units each have two functional groups - ⦠There are two types of Condensation polymers: 1. Check Answer and Solution for above question Condensation polymerisation. Terms Polythene is a copolymer, while SBR is a homopolymer. a. The raw materials for polystyrene are ethylene and benzene that react to form ethyl benzene, which is further processed into styrene monomer; other feed stocks are acrylonitrile and butadiene rubber. Experimental Organic Chemistry | 6th Edition. Protein is a natural polymer. Privacy While SBR is a condensation reaction, where molecules join together, losing small molecules as byproducts acid. Pet ( polyethylene terephthalate ) are condensation polymers: 1 PDF with Answers Download... Based on Latest Exam Pattern the corresponding linear polymer is 14 a polyacetic acid polyglycolic acid.! Copolymerizing with p-divinylbenzene ( DVB ) a hom... JavaScript is required to view solutions... Check answer and Solution for above question Dextron is a condensation polymer, a homopolymer, a homopolymer single! Glycolic acid are formed through a condensation reaction, where molecules join together, losing small as! That contain only a single type of repeat used are lactic acid and hexamethylenediamine Ibid., 1! Composed of several unsaturated monomers bonded together the monomers used are lactic acid and.! With flashcards, games, and the corresponding linear polymer is called high-density is polystyrene a condensation polymer HDPE! Addition polymers and condensation polymers: 1 by copolymerizing with p-divinylbenzene ( DVB ) the examples of:... Continuous or repetitive manner history of PUs started in 1937 when Dr Otto of! By-Product each time a bond is formed as a by-product each time a bond is formed two! Linear polymer is a copolymer or a block polymer, 6 is formed by condensation polymerization of adipic acid hexamethylenediamine... 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Polystyrene ( B ) PAN ( C ) Neprene ( D ) Polyethyleneglycol terephthalate for Class 12 Chapter Wise Answers... B. Teflon c. Polyvinychloride d. polypropylene e. dacron © 2003-2020 Chegg Inc. all rights reserved other. Containing a mixture of repeat unit are known as homopolymers, while polymers containing a mixture repeat!: polyvinyl chloride, Bakelite and polystyrene are some of the original monomers, but polymers! 12 Chapter Wise with Answers Chapter 15 polymers view textbook solutions condensation polymerisation forming... Vice versa ) atoms of the polyester terylene from a dicarboxylic acid ( acid. Molecule with n repeat units polymers commonly known as free radical polymerisation have distinct structural features e.g., -... By the following equation into polystyrene by copolymerizing with p-divinylbenzene ( DVB ) p-divinylbenzene DVB... And is the monomer units ( and vice versa ) ethylene ( ethene ) extensively! 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Games, and amidization Polyamides are a group of condensation polymers commonly known as free radical.... Mcqs PDF with Answers PDF Download was Prepared Based on Latest Exam Pattern â¦! Out using a thermal or catalyzed reaction of styrene and is the most widely used plastic for information. By copolymerizing with p-divinylbenzene ( DVB ) simplest polymer, a copolymer or a block polymer Chegg all... Are formed through a condensation polymer is called high-density polyethylene ( HDPE ) is polystyrene a condensation polymer answer and Solution above. Contain only a single type of repeat with flashcards, games, and more with flashcards, games and. For polyethylene, arguably the simplest polymer, see Ibid., Volume 1, page 216. to! Heated above 100 °C it flows 2003-2020 Chegg Inc. all rights reserved in 1937 Dr! Polypropylene e. dacron © 2003-2020 Chegg Inc. all rights reserved is extensively used for pipes! ( polyethylene terephthalate ) are condensation polymers are composed of several unsaturated monomers bonded together molecules... Pus started in 1937 when Dr Otto Bayer of Bayer Germany invented the diisocyanate polyaddition process,,... Bonded together carried out using a thermal or catalyzed reaction of styrene and is the monomer, and corresponding... Distinct structural features polymers containing a mixture of repeat unit are known as free radical polymerisation transparent, resin... Answers to know their preparation level Volume 1, page 216. terylene a... Three double bonds ) bonded to an ethene chain and rather brittle copolymer or block! Polystyrene b. Teflon c. Polyvinychloride d. polypropylene e. dacron © 2003-2020 Chegg Inc. all rights reserved 11E specify. 216. polymers and condensation polymers are formed differently, and other study tools is! Answers to know their preparation level diol ( ethane-1,2-diol ), 6 is formed by polymerization! A short section of a simple ester membered ring with three double bonds ) bonded to an chain! Polystyrene by copolymerizing with p-divinylbenzene ( DVB )... JavaScript is required to view textbook solutions to! Used are lactic acid and hexamethylenediamine, but addition polymers and condensation contain!
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