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bakelite is an example of addition polymer

SOME IMPORTANT POLYMERS NATURAL AND SYNTHETIC LIKE POLYMERS LIKE POLYSTERS, BAKELITE, RUBBER, BIODEGRABLE AND NON-BIODEGRABLE POLYMERS 1. The best example is polymerization of ethylene. It is an addition polymer of tetraflouroethylene.It is bad conductor of heat. A familiar example of a condensation polymer is nylon, which is obtained from the reaction of two monomers. 1) Polythene 2) PVC The monomers used are unsaturated compounds like alkenes, alkadienes and their derivatives. Examples: Terylene, Bakelite, ... Related questions 0 votes. 9. Polyacrylonitrile is an example of (a) addition polymer (b) condensation polymer (c) natural polymer (d) None of these. Give one example. Which of the following polymer is an example of fibre [AIIMS 2000; Pb. Odd one out: choose the letter of the word that is not related from the other choices. An example is vulcanized rubber. C) Urea-formaldehyde resin done clear. Give two examples of each (i) linear polymer (ii) Network polymer. These polymers are formed when linear polymeric chains are connected together to make up a three dimensional network structure. Plus Two Chemistry Polymers Three Mark Questions and Answers. Question 47. 19: Which of the following has ester linkage? (b) What are biodegradable polymers? iv) ... As the name suggests addition polymers form when an addition reaction occurs. Some examples include, bakelite and melamine formaldehyde resin. Addition Polymers The addition polymers formed by the polymerisation of a single monomeric species are known as homopolymers. B) Both addition polymers and condensation polymers lose some atoms from the original monomers when the polymer is formed. uses no catalyst. All India 2013) Answer: The synthesis of bakelite starts with the reaction between formaldehyde (H 2 CO) and phenol (C 6 H 5 OH) to form a mixture of ortho- and para-substituted phenols. Bakelite, formed from the condensation reaction of phenol with formaldehyde, became hugely popular – perhaps you have seen products with Bakelite, such as … In addition to the original Bakelite material, these companies eventually made a wide range of other products, many of which were marketed under the brand name "Bakelite plastics". Question 1. Bakelite is an example of polymer. Historical aspects. It is a phenol formaldehyde resin, formed from condensation reaction of phenol and formaldehyde The synthesis of first truly synthetic polymeric material, bakelite, was announced by Leo Baekeland in 1907, through a typical step-growth polymerization fashion of phenol and formaldehyde.The pioneer of synthetic polymer science, Wallace Carothers, developed a new means … Contributors; When addition polymers are formed, no by-products result. The first truly synthetic plastic was bakelite, developed by Leo Baekland between 1905 and 1914. Bakelite and melamine are examples in this category. They have a stronger covalent bond in comparison to other linear polymers. Check Answer and Solution for abov Formation of a condensation polymer, on the other hand, produces H 2 O, HCl, or some other simple molecule which escapes as a gas. It is because of the unique properties it possesses. C) Addition polymers contain all of the atoms of the original monomers, but condensation polymers do not. (A) Polystyrene (B) Nylon (C) PVC (D) Polypropylene. Which of the following represents the example of homopolymer? A. Bakelite B. Melamine C. Branched D. Cross-linked 10. The reaction is shown in the graphic on the left. Give one example of each of these ... Monomers combine together with the loss of molecules like H 2 O, NH 3, etc. The process can be … Poly(ethene) is an addition polymer. 1 answer. Addition and condensation polymers can exist with a cross-linked network, depending on the monomers used in the synthesis. Condensation polymers are generally formed by step growth polymerisation. -It requires two like molecules. Question 10. Answer: Bakelite is the condensation polymer of phenol and formaldehyde. Familiar examples of cross-linked polymers are Bakelite, rubber, and casting (boat) resin. Again there are four types of addition polymerizations which are. The double bonds in monomers break and they join to form a big molecule. 18: Which is used in formation of nylon-66? But there is no loss of an atom or a molecule. Addition Polymerization: Example, poly ethane, Teflon, Polyvinyl chloride (PVC) An Overview of its Properties and Uses. Addition polymers are a type of polymer in which all the monomers are unsaturated or to simply to say are alkenes. What is Bakelite Plastic? It allows ethene molecules to join together to form a single product, so it is an example of an addition reaction. Modelling addition polymers. (Comptt. Which compound form linear polymer due to H-bond? These polymers have many cross-linking bonds that give rise to a network-like structure. produces low density polythene. PROPERTIES:-Tensile strength; Higher tensile strength holds a greater weight before snapping. Why bakelite is said to be an example for thermosetting polymer? structure with tremendous rigidity. Ans. When addition polymers form, ... Styrene-butadiene rubber is an example of a a. copolymer b. natural elastomer c. natural cross linked polymer Free Radical Polymerization: Here the addition polymer forms by addition of atoms with a … Which is an example of thermosetting polymer? They are composed of bifunctional and trifunctional monomers. Examples – Bakelite, melamine, etc. Polymer obtained by condensation polymerization is 1) Polythene 2) Teflon 3) Phenol-formaldehyde 4) Nitrile rubber 2. USES: It is used as a material resistant to heat and chemical attack in household works. Along came Bakelite – which is the first example of a truly synthetic polymer (the rest were just modifications of cellulose). Addition polymers: Polyvinyl chloride, polythene.Condensation polymers: Terylene, Bakelite. Select one: Elastomers O Thermoset Thermoplastic Composite Question 16 Not yet answered Marked out of 1.00 P Flag question The following figure represents Face Centered Cubic structure Select one: True O False These included other types of cast phenolic resins similar to Catalin , and urea-formaldehyde resins, which could be made in brighter colors than polyoxy­benzyl­methylene­glycol­anhydride. Addition polymers are generally formed by chain growth polymerisation. Which of the following is an addition polymer . (a) Distinguish between homopolymers and copolymers. *Addition polymerization -The addition polymerization means that two monomers react with each other and no other small molecules are generated. Fibers. ⇒ Zeigler process produces high density polythene. Here are 100 most important Multiple choice questions and answers on Polymer and Polymerization for the entrance exams. Other Addition Polymers. (a) PMMA (b) Nylon- 6, 6 (c) Dacron (d) Bakelite. Differentiate between the modes of formation of an addition polymer and a condensation polymer. Presented here are the properties and other uses of Bakelite you should know about. Example: Formation of polythene from ethene. The polymer is a long chain molecule which is formed by joining many small molecules called monomers. Network polymers: Bakelite, Melamine. Notice how every other carbon must have a chlorine attached. Polymers can also be classified on the basis of mode of polymerisation into two sub groups. These questions are likely to appear in entrance exam of MBBS, ENGINEERING , BDS, BN, BMLT, AG , BVSC and various other medical and paramedical entrance exams. EXAMPLES-Bakelite,formaldehyde etc. Based on the mode of polymerisation, it is classified into; Addition polymers: Polymers are formed by the repeated addition of monomers with double and triple bonds. A hard, infusible, and chemically resistant plastic, Bakelite was based on a chemical combination of phenol and formaldehyde (phenol-formaldehyde resin), two compounds that were derived CET 2001] A) Silk done clear. PVC (polyvinyl chloride), which is found in plastic wrap, simulated leather, water pipes, and garden hoses, is formed from vinyl chloride (H 2 C=CHCl). They are very rigid, hard, and brittle. Give one example of each. Some common examples are Proteins (which are found in humans and animals alike), ... thermosetting polymer is that of Bakelite, which is used in making electrical insulation. Bakelite, trademarked synthetic resin invented in 1907 by Belgian-born American chemist Leo Hendrik Baekeland. 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