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How did nylon become the first wholly synthetic fibre produced commercially?

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man-made fibre Figure 1: Three common polymer structures. The linear, branched, and network architectures are represented (from top), respectively, by high-density polyethylene (HDPE), low-density polyethylene (LDPE), and phenol formaldehyde (PF). The chemical structure and molecular structure of highlighted regions are also shown.

Nylon became the first wholly synthetic fibre produced commercially because it was created entirely from chemical substances, unlike earlier man-made fibres like rayon that were derived from natural materials such as cellulose.12

Developed in the 1930s by a research team led by Wallace Hume Carothers at DuPont, the material—specifically polyhexamethylene adipamide, or nylon 6,6—was synthesized through the condensation reaction of adipic acid and 1,6-hexamethylenediamine. The production process utilized a molecular still to achieve high-degree polymerization.345

Nylon's commercial success was driven by its superior properties, including high strength, elasticity, and abrasion resistance, which allowed it to serve as a replacement for silk. After being showcased at the 1939 World's Fairs, it was released to the public in 1940. Its versatility was further proven during World War II, where it was utilized for military applications like parachutes, ultimately establishing the foundation for the modern synthetic-fibre industry.3542