FSN 101 Chapter Notes - Chapter 7: Chemical Tanker, Natural Fiber, Hydrogen Bond
18 Apr 2013
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Manufactured regenerated fibres are produced from naturally occurring polymers of cellulose or protein but processing is needed to convert them into fibre form. First regenerated cellulosic fibre and many processes were developed. Commercial production of rayon began and it was sold as artificial silk until rayon was adapted. Viscose filament fibre; original form, was a brightly lustrous fibre; rayon was discovered when a textile worker discovered that broken waste rayon filament could be used as a staple fibre. Early rayon fabrics: transparent velvet, sharkskin, tweed, challis, chiffon. Regular rayon produced in us is viscose rayon. Zinc added to spinning bath slowed polymer regeneration increasing crystallinity. High-wet-modulus rayon has different characteristics (viscose rayon is weaker fibre) Hwm is also high performance rayon (polynosic rayon or modal) Production not expected to increase because high cost of replacement of machines and wet spinning; it is now as much as cotton.
