Unit XVI: Chemistry in Everyday Life (Periods 8) 1. Classification: Natural and synthetic, methods of polymerization (addition and condensation), copolymerization. JEE Main 2020 Paper 5th September 2020 | (Shift-2), Chemistry Page | 6 15. Process Improvements and Polymerization Kinetics Process Technology. Some import ant polymers: natural and synthetic like polythene, nylon, polyesters, bakelite, rubber. ments and the kinetics of addition and condensation polymerization of common monomers. The remaining 22 chapters are concerned with new and better polymers designed for a specific end use or physical property. 3.4. In chemistry of industrial polymers: Industrial polymerization methods. 1 Tag Results for "condensation" Understanding How Anti-Fog Glasses Works! Condensation polymers The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. The polymers made by addition polymerisation from two different monomers are termed as copolymers, e.g., Buna-S, Buna-N, etc. Give below in a tabular column is the difference between addition and condensation polymerization. The second type of reaction is known as chain-growth polymerization. In these cases the reactor must supply heat in order to maintain a practical reaction rate. Cross-linking using enzymes A condensation polymerization is a process that involves repeated condensation reactions between two different bi-functional or tri-functional monomers. Condensation polymerization, on the other hand, is endothermic—that is, the reaction requires an input of heat from an external source. In condensation reactions, the product of each step is again a bi-functional species and the sequence of condensation goes on. (1) Bakelite (2) Nylon 6 (3) Buna-N (4) Nylon 6, 6 A condensation polymerization is a process that involves repeated condensation reactions between two different bi-functional or tri-functional monomers. condensation polymerization 3. addition polymerization:- the polymer is formed from the monomer, without the loss of any material, and the product is the exact multiple of the original monomeric molecule. polyesters, polyamides, polyurethanes, etc. Give below in a tabular column is the difference between addition and condensation polymerization. Step-growth polymerization refers to a type of polymerization mechanism in which bi-functional or multifunctional monomers react to form first dimers, then trimers, longer oligomers and eventually long chain polymers.Many naturally occurring and some synthetic polymers are produced by step-growth polymerization, e.g. Condensation Polymerisation or Step Growth polymerization: Polymerisation generally involves a repetitive condensation reaction between two bi-functional monomers. Which one of the following polymers is not obtained by condensation polymerisation? Addition Polymerization Condensation Polymerization 2. In these polymerisation reactions, the elimination Moreover, by UV-polymerization, the hydrogel synthesis may be done (Hubbell, 1996), the planned structures may be synthesized and photo-reversible systems are also possible, which means that after exposing to UV light, preformed hydrogels degrade and so a drug is released (Andreopoulos et al., 1998). 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