Polyamide || Nylon 6 and Nylon 6,6 || Some important Polymers || UG PaathShaala #polyamide #nylon

Polyamide may be produced by the interaction of an amine (-NH2) group and a carboxyl (-COOH) group, or they may be formed by the polymerization of amino acids or amino-acid derivatives. Broadly defined, the polyamides include proteins and peptides, which are naturally produced polymers consisting of amino-acid repeating units (In molecular biology the amide linkage is usually referred to as the peptide bond). The polyamides are the polymer having an amide group in their backbone chain. They are prepared by polycondensation of dicarboxylic acid and diamine. Polyamide, any polymer in which the repeating units in the molecular chain are linked together by amide groups (- CO-NH-). Normally aliphatic polyamides are known as Nylon. Commercially important nylons are Nylon-6, Nylon-6,6, Nylon-6,10 and Nylon-11. The numbering system represents how many numbers of the carbon atom are present in their monomer molecules. The nylon prepared using dicarboxylic acid and diamines are represented by two numbers. The first number indicates the number of carbon atoms present in the diamine monomer. The second number indicates the number of carbon atoms present in dicarboxylic acid. Some Nylon is represented a single number. Prepared either by self-condensation of amino acid or ring-opening polymerization of lactam. #polyamide #nylon #nylon6 #nylon66