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condensation polymerization

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condensation polymerization

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Solution

Condensation polymerization is a form of step-growth polymerization in which monomers or reactants, usually with differing functional groups, react to form a polymer. The reaction results in a net loss of small molecules such as water, methanol, or hydrogen chloride. This type of polymerization contrasts with addition polymerization, which involves the reaction of unsaturated monomers.

Here are the steps involved in condensation polymerization:

  1. Initiation: The process begins with an initiator, which starts the reaction. The initiator can be a single reactive molecule that reacts with a monomer, or it can be a reactive monomer that reacts with another monomer.

  2. Propagation: The reactive group of the growing polymer chain reacts with the functional group of another monomer, forming a covalent bond and extending the polymer chain. This step is repeated many times, leading to the growth of the polymer chain.

  3. Termination: The reaction stops when the reactive groups have all reacted and no more monomers can be added to the chain. This can happen in several ways, such as when two growing chains react with each other,

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Examples of polymerization

Which of the following describes condensation polymerisation?Produces a polymer plus a small moleculeUsually involves two different monomersAll of theseThe functional groups on the two different monomers react together2Which of the following is a dioic acid? HOOC-CH2-COOHHO-CH2-OHCH3-CH2-COOHCH3-CH2-CH2-CH2-COOH3A diol is joined with a dioic acid in a condensation polymerisation reaction. What products are formed?Polyester onlyPoly(ethene) plus waterPoly(ethene) onlyPolyester plus water4What is the functional group of an ester?‒OH‒COOH‒COO‒C=C5In a condensation polymerisation reaction between nHO-□-OH and nHOOC-□-COOH, how many water molecules are formed?nH2O3nH2ONo water2nH2O6Which of the following is methanediol?OOC-CH2-COOHOOC-CH2-COOHHO-CH2CH2-OHHO-CH2-OH

3) When the condensation polymerization reaction starts and where? What is alternative name of thepolymerization reaction that you completed during the practical lesson?

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