Out of the following materials:cotton, nylon, terylene, wool, Pet, acrylic(a) which materials are polyesters?(b) which materials is a polyamide?(c) which material is used as a substitute for wool?(d) which material is used as a substitute for glass?
(a) Terylene and PET are polyesters. Polyester is the synthetic fibre which contains the organic group similar-to those which give fruits their sweet smell. It is used for making bottles and utensils which is replacing materials like glass.
(b) Nylon is a polyamide. Nylon is the first fully synthetic fibre. It was prepared from coal, water and air.
(c) Acrylic is used as a substitute for wool. It is a synthetic fibre which appears to resemble wool.
(d) PET is a material used as a substitute for glass. It is a form of polyester. Polyester is the synthetic fibre which is made up of repeating units of a chemical called an ester. PET is used for making bottles, utensils, films and wires.
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