Polystyrene with DVB: Cross-linking between polymer chains can be introduced into polystyrene by copolymerizing with p-divinylbenzene (DVB). *Addition polymerization -The addition polymerization means that two monomers react with each other and no other small molecules are generated. Polyesters such as PET (polyethylene terephthalate) are condensation polymers. POLYAMIDE Polyamides are a group of condensation polymers commonly known as nylon. Answer to Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. General-purpose polystyrene is clear, hard, and rather brittle. Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Polystyrene b. Teflon c. Polyvinychloride d. polypropylene e. dacron Learn vocabulary, terms, and more with flashcards, games, and other study tools. Polystyrene can be solid or foamed. In a polymer, the monomers are linked to each other in a continuous or repetitive manner. Students can solve NCERT Class 12 Chemistry Polymers MCQs Pdf with Answers to know their preparation level. Show Video. Polyvinyl chloride (PVC) is extensively used for plumbing pipes. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. View desktop site. Polystyrene is used in insulation and in molded items such as coffee cups. Dextron is a polyacetic acid polyglycolic acid polymer. For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. Polyurethanes (PUs) are a family of condensation polymers that include the urethane (–NHCOO–) group in the chemical structure (Figure 5.1). Privacy 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. Polystyrene is made from the monomer styrene which is a liquid petrochemical. Addition polymers are composed of several unsaturated monomers bonded together. It becomes rigid again when it cools down. © 2003-2020 Chegg Inc. All rights reserved. The monomers used are lactic acid and glycolic acid. What is Bakelite? | Condensation polymerisation. Polyester. [For more information about this polymer, see Ibid., Volume 1, page 216.] This polymer can absorb 800 times it own weight of distilled water, but only 300 times its weight of tap water. Start studying Chem Homework Polymers. Neoprene is a natural rubber. The process is known as condensation polymerisation - forming water molecules together with polyester molecules. Terms Which of the following is a condensation polymer ? It is copolymer and has ester linkage. & It is used as friction modifier. Terms Polyvinyl chloride, Bakelite and polystyrene are some of the examples of polymers. Protein is a natural polymer. Here ethylene (ethene) is the monomer, and the corresponding linear polymer is called high-density polyethylene (HDPE). Polyethylene in plastic, and nylon, are both common polymers used every day, among several others. For e.g., Nylon - 6, 6 is formed by condensation polymerization of adipic acid and hexamethylenediamine. View desktop site. 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. 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. . Terylene: Example of polyester. Polystyrene is an aromatic polymer and has many uses including protective packaging, in trays, as … The synthesis of polystyrene is carried out using a reaction known as free radical polymerisation. It is produced by the polymerization of styrene and is the most widely used plastic. At room temperature, the thermoplastic polymer is a solid but when heated above 100 °C it flows. There are two types of Condensation polymers: 1. Examples: Nylon, terylene, Bakelite. The molecule most commonly split out between monomers to make a condensation polymer is Polyamide. The only difference is that both the alcohol and the acid monomer units each have two functional groups - … Figure \(\PageIndex{4}\): Polyvinyl chloride. Check Answer and Solution for above question from Chemistry in Polymers - Tardigrade HDPE is composed of macromolecules in which n ranges from 10,000 to … The best example is polymerization of ethylene. Privacy Both are formed differently, and have distinct structural features. D) Condensation polymers contain all of the atoms of the original monomers, but addition polymers do not. In the repeat unit In the repeat unit above shown the R … & 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. Condensation polymers are formed through a condensation reaction, where molecules join together, losing small molecules as byproducts. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. It is added to lubricants to reduce surface friction. 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. Ethane-1,2-Diol ), arguably the simplest polymer, the thermoplastic polymer is hard! Given the monomer, and amidization carried out using a reaction known homopolymers. 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