The reaction can take place between two monomers, one monomer and one dimer, or a dimer with an oligomer, or a chain with another chain of polymers. Used as kitchen ware, alternative of glass, laparoscopic instruments, electric meters, cell phones, etc. ... Caprolactum is obtained from cyclohexane , according to the reaction sequence given below: ... Polymerisation: The process in which large number of small molecules combine to form a giant molecule or a macromolecule. b) butane-dioic acid and glycol In a polymer, molecules vary in size or molar mass, hence possess polydispersity (dispersity) or a molar mass distribution. View Answer. 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. How to Calculate Degree of Polymerization. The monomer given has an alkene functional group which is involved in the formation of the addition polymer whose structure is given below. In addition polymerization, two or more molecules of monomers attach together to form a polymer. Which of the following are characteristics of thermosetting polymers? Classify the given polymers based on their resemblance to crystalline or amorphous polymers. They have high Tg and Tm values that makes them rigid as glass and transparent. View Answer, 2. Sanfoundry Global Education & Learning Series – Polymer Engineering. View Answer, 11. Addition Polymerization Condensation Polymerization As noted, GNP 1 μm do not display any significant density change, which correlates with the CT images. Polycarbonate .....Addition polymerisation.3. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Monomers must therefore have a negative free energy of polymerization, under given conditions, if they are to be capable of undergoing a significant extent of polymerization. Used in making tires, ropes, carpet fibers, conveyor belts, air bags, etc. Condensation, like its reverse process, evaporation, is an example of a phase transition of matter (first-order phase transition). The monomer given has an alkene functional group which is involved in the formation of the addition polymer whose structure is given below. Any high-yield condensation reaction such as esterification or amidation can be used to obtain a high-molecular-weight polymer. Condensation mechanism refers to combining of smaller molecules to obtain larger molecules. In many cases, organometallic complexes that contain a suitable metal–alkyl function for the subsequent activation can be synthesized. b) silk The terminal functional groups on a chain remain active, so that groups of shorter chains combine into longer chains in the late stages of polymerization. 3.3. Characteristics of Condensation Polymers. Notes. o In condensation polymerization, polymers are formed by the release of small particles as by product of a condensation reaction. In chemistry, cationic polymerization is a type of chain growth polymerization in which a cationic initiator transfers charge to a monomer which then becomes reactive. Thermal cure characteristics and backbone chain modifications To investigate the chemical basis that causes the structural modifications with the increased GNP contents, we analyze the thermal characteristics of the endothermic condensation polymerization reaction at … The terminal functional groups on a chain remain active, so that groups of shorter chains combine into longer chains in the late stages of polymerization. c) nylons Polymerization reaction and interfacial coupling mechanism First, we highlight the chemical principles of the poly-condensation reaction carried out between the matching olig-omer groups that form the crosslinked network of the ATSP matrix. Condensation polymerization: This type of reaction involves the repetitive condensation between two bi-functional monomers. d) none of the mentioned Only III. In condensation polymerisation, a small molecule is formed as a by-product each time a bond is formed between two monomers. 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