Small molecules are usually liberated in these condensation steps, unlike polyaddition reactions. Condensation polymers often require heat, form slower than do addition polymers, and are lower in molecular weight. This type of reaction is used as a basis for making many important polymers, such as nylon, polyester, and various epoxies. It is also the basis for the laboratory formation of silicates and polyphosphates.
Many biological transformations, such as polypeptide synthesis, polyketide synthesis, terpene syntheses, phosphorylation, and glycosylations are condensations. Boundless vets and curates high-quality, openly licensed content from around the Internet.
This particular resource used the following sources:. Small molecule condensates are usually liberated, unlike in polyaddition where there is no liberation of small molecules. In general, condensation polymers form more slowly than addition polymers, often requiring heat. They are generally lower in molecular weight.
Monomers are consumed early in the reaction; the terminal functional groups remain active throughout and short chains combine to form longer chains. Bifunctional monomers lead to linear chains and therefore thermoplastic polymers , but when the monomer functionality exceeds two, the product is a thermoset polymer. This type of reaction is used as a basis for the making of many important polymers for example: nylon , polyester and other condensation polymers and various epoxies. It is also the basis for the laboratory formation of silicates and polyphosphates.
The reactions that form acid anhydrides from their constituent acids are typically condensation reactions. Other organic condensation reactions are Aldol condensations , self-condensation , the acyloin condensation and the benzoin condensation. Many biological transformations are condensation reactions. Polypeptide synthesis, polyketide synthesis, terpene syntheses, phosphorylation , and glycosylations are a few examples. Template:WikiDoc Sources. Category : Condensation reactions.
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Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. A small molecule, often water, is usually removed during a condensation reaction.
Amino acids are important biological molecules that have an amine functional group on one end of the molecule and a carboxylic acid functional group on the other end. When two amino acids combine in a condensation reaction, a covalent bond forms between the amine nitrogen of one amino acid and the carboxyl carbon of the second amino acid. A molecule of water is then removed as a second product.
This reaction forms a molecule called a dipeptide and the carbon-nitrogen covalent bond is called a peptide bond. When repeated numerous times, a lengthy molecule called a protein is eventually produced. An esterification is a condensation reaction in which an ester is formed from an alcohol and a carboxylic acid.
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