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A polyamide is a polymer with repeating units linked by amide bonds. Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk.
Polyamide, any polymer (substance composed of long, multiple-unit molecules) in which the repeating units in the molecular chain are linked together by amide groups. Amide groups have the general chemical formula CO-NH. They may be produced by the interaction of an amine (NH2) group and a carboxyl.
- The Editors of Encyclopaedia Britannica
Aug 8, 2023 · August 8, 2023. 10 min read. Polyamide is a high-performance synthetic plastic, composed of a long polymer chain bonded by amide groups. The specific composition and properties of polyamide vary depending on whether it is an aliphatic, aromatic, or semi-aromatic polyamide.
Polyamide and polyester are two different classes of synthetic polymers with distinct chemical structures and properties. Polyamide, commonly known as nylon, is characterized by the presence of amide groups in its molecular structure. It has excellent strength, durability, and chemical resistance.
Aug 21, 2020 · Polyamides. Just as the reaction of a diol and a diacid forms a polyester, the reaction of a diacid chloride and a diamine yields a polyamide. The two difunctional monomers often employed are the acyl chloride of adipic acid and 1,6-hexanediamine.
Nylon 66 (loosely written nylon 6-6, nylon 6/6, nylon 6,6, or nylon 6:6) is a type of polyamide or nylon. It, and nylon 6, are the two most common for textile and plastic industries. Nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.
Dec 28, 2022 · Polyamides. Just as the reaction of a diol and a diacid forms a polyester, the reaction of a diacid and a diamine yields a polyamide. The two difunctional monomers often employed are adipic acid and 1,6-hexanediamine.
