Discussion
Among the following, select which is a regenerated fibre ?
Answer: A
The regenerated fibre is rayon.
Regenerated fibres are made by dissolving a natural polymer and then re-forming it as a fibre. Rayon (viscose) is made from wood pulp cellulose dissolved and extruded through spinnerets, so it is chemically cellulose but manufactured, between natural and synthetic fibres.
Sericin is the gummy protein that coats natural silk, not a fibre type. Nylon is a fully synthetic polyamide made from petrochemicals. 'Second growth milk' is not a recognised fibre, though casein from milk can be regenerated into protein fibres.
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