Polyamide

Polyamides are the polymers having amide group in them. The important polyamide is Nylon-66 which is a synthetic polymer.

Nylon - 66

It is a polymer of adipic acid (tetra methelene dicarboxylic acid) and hexamethelene diamine.

Nylon - 66 (read as nylon six-six) can be cast into a sheet or fibres by spinning devices. Nylon fibres have high tensile strength. They are tough and resistant to abrasion. They are also somewhat elastic in nature. Nylon finds use in making bristles and brushes, carpets and fabrics in textile industry, elastic hosiery in the form of crinkled nylon.