1- Terephthalic acid.
3 - Ethylene glycol.
When acid and alcohol get reacted in a vacuum at very high temperatures. The polythene terephthalate results in condensation polymerization. Once the polymerization has occurred the material is extruded onto a casting trough in the form of a ribbon. When the polymer gets cool, the polymer ribbon gets hardened. Now, this is cut into polymer chips.
Production process of nylon 66
Elastane or spandex fibre production ( lycra and dorlastane
Soy protein fibre ( a renewable fibre