General-purpose polystyrene is clear, hard, and rather brittle. © 2003-2020 Chegg Inc. All rights reserved. Condensation polymers are formed through a condensation reaction, where molecules join together, losing small molecules as byproducts. Privacy 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. | Condensation polymers are formed by the combination of monomers with the elimination of simple molecules such as H 2 O or CH 3 OH. Polystyrene is an aromatic polymer and has many uses including protective packaging, in trays, as … HDPE is composed of macromolecules in which n ranges from 10,000 to … It is used as friction modifier. Privacy Protein is a natural polymer. WBJEE 2018: A condensation polymer among the following is (A) Dacron (B) PVC (C) Polystyrene (D) Teflon. 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 … Polyisoprene is a polymer of isoprene and is … Polyvinyl chloride, Bakelite and polystyrene are some of the examples of polymers. 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 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. Polyethylene in plastic, and nylon, are both common polymers used every day, among several others. What is Bakelite? Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. Condensation polymerisation. Dextron is a polyacetic acid polyglycolic acid polymer. The synthesis of polystyrene is carried out using a reaction known as free radical polymerisation. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. For e.g., Nylon - 6, 6 is formed by condensation polymerization of adipic acid and hexamethylenediamine. Notice that n monomer molecules produce one polymer molecule with n repeat units. The only difference is that both the alcohol and the acid monomer units each have two functional groups - … Which of the following is a condensation polymer ? Terms | The synthesis is shown below. Polystyrene b. Teflon c. Polyvinychloride d. polypropylene e. dacron Polyurethanes (PUs) are a family of condensation polymers that include the urethane (–NHCOO–) group in the chemical structure (Figure 5.1). Free PDF Download of CBSE Chemistry Multiple Choice Questions for Class 12 with Answers Chapter 15 Polymers. It is an inexpensive resin per unit weight. Polystyrene is used in insulation and in molded items such as coffee cups. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. The monomers used are lactic acid and glycolic acid. The best example is polymerization of ethylene. Neoprene is a natural rubber. Both are formed differently, and have distinct structural features. Important condensation reactions are esterification, ester interchange, etherification, and amidization. The formation of a polyester follows the same procedure as in the synthesis of a simple ester. Polythene is a copolymer, while SBR is a homopolymer. At room temperature, the thermoplastic polymer is a solid but when heated above 100 °C it flows. (A) Polystyrene (B) PAN (C) Neprene (D) Polyethyleneglycol terephthalate. *Addition polymerization -The addition polymerization means that two monomers react with each other and no other small molecules are generated. POLYAMIDE Polyamides are a group of condensation polymers commonly known as nylon. © 2003-2020 Chegg Inc. All rights reserved. You should be able to draw a short section of a polymer given the monomer units (and vice versa). Polyesters such as PET (polyethylene terephthalate) are condensation polymers. Answer to Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. Polystyrene is a thermoplastic polymer. Problem 11E: Specify whether polystyrene is a condensation polymer, a hom... JavaScript is required to view textbook solutions. 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. Polystyrene is a hard, brilliantly transparent, stiff resin. Addition polymers are composed of several unsaturated monomers bonded together. For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. Polystyrene is made from the monomer styrene which is a liquid petrochemical. Condensation Polymers 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. Check Answer and Solution for above question from Chemistry in Polymers - Tardigrade a. D) Condensation polymers contain all of the atoms of the original monomers, but addition polymers do not. Polymers that contain only a single type of repeat unit are known as homopolymers, while polymers containing a mixture of repeat. In condensation polymerisation, a small molecule is formed as a by-product each time a bond is formed between two monomers. H2O. . Bakelite is a condensation polymer of phenol and formaldehyde. Polystyrene (PS) / ˌ p ɒ l i ˈ s t aɪ r iː n / is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. View desktop site. It is added to lubricants to reduce surface friction. It becomes rigid again when it cools down. Formation of the polyester terylene from a dicarboxylic acid (benzene-1,4-dicarboxylic acid) and diol (ethane-1,2-diol). 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. The history of PUs started in 1937 when Dr Otto Bayer of Bayer Germany invented the diisocyanate polyaddition process. Condensation polymer among the following is - (a) Teflon (b) Polystyrene (c) PVC (d) Dacron The molecule most commonly split out between monomers to make a condensation polymer is 14. Check Answer and Solution for above question This polymer can absorb 800 times it own weight of distilled water, but only 300 times its weight of tap water. Polystyrene with DVB: Cross-linking between polymer chains can be introduced into polystyrene by copolymerizing with p-divinylbenzene (DVB). 2. Polyvinyl chloride (PVC) is extensively used for plumbing pipes. There are two major types of polymers: addition polymers and condensation polymers. Show Video. Answer/Explanation. In a polymer, the monomers are linked to each other in a continuous or repetitive manner. Polystyrene is … 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 Answer. [For more information about this polymer, see Ibid., Volume 1, page 216.] It is produced by the polymerization of styrene and is the most widely used plastic. Figure \(\PageIndex{4}\): Polyvinyl chloride. -It requires two like molecules. Some polymers are made via condensation polymerisation. It is copolymer and has ester linkage. Styrene consists of a benzene ring (a six membered ring with three double bonds) bonded to an ethene chain. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Polyamide. Experimental Organic Chemistry | 6th Edition. Polystyrene can be solid or foamed. & View desktop site. Start studying Chem Homework Polymers. Polyester. Figure \(\PageIndex{3}\): Polystyrene synthesis and structure. Examples: Nylon, terylene, Bakelite. The process is known as condensation polymerisation - forming water molecules together with polyester molecules. Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. There are two types of Condensation polymers: 1. Therefore, most polyurethane and polystyrene foams are manufactured by forcing a pressurized gas, such as nitrogen or carbon dioxide, into the polymerizing mixture. 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