Question

Why are cotton and woollen clothes rough whereas silk,
rayon, nylon and polyester smooth to touch?

Answer 1

Answer:

Roughness of cotton and woollen fibre is due to presence of many folds and uneven surfaces in it. Silk, rayon, nylon and polyester are smooth because they have long plain, fine structure.

Answer 2

Answer:

Woollen and cotton contain air spaces in it which makes it rough when you touch and also they have uneven surface which makes them rough to touch. On other hand silk and nylon have plain long fine structure which makes it appear smooth in touch. Cotton is from plants and wool comes from sheep which makes it rough.