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#REDIRECT [[Rayon]] |
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'''Viscose''' is a [[viscous]] organic liquid used to make [[rayon]] and [[cellophane]]. [[Cellulose]] from [[wood]] or [[cotton]] fibres is treated with [[sodium hydroxide]], then mixed with [[carbon disulfide]] to form cellulose xanthate, which is dissolved in more sodium hydroxide. The resulting viscose is extruded into an acid bath either through a slit to make [[cellophane]], or through a spinneret to make viscose [[rayon]] (sometimes simply called '''viscose'''). The acid converts the viscose back into cellulose. |
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[[Image:rayon_synth.png|center|thumb|500px|Cellulose is treated with alkali and carbon disulfide to yield viscose.]] |
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The process for manufacturing viscose was discovered by three British scientists, [[Charles Frederick Cross]], [[Edward John Bevan]] and [[Clayton Beadle]], in [[1891]]. |
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==Industrial Applications== |
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Viscose was first used for coating fabrics which it did quite successfully. However, when [[Charles Frederick Cross|Cross]] and his partners tried to make solid objects like umbrella handles they were found to be much too brittle. |
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Further development led to Viscose being spun into thread for embroidery and trimmings. Eventually, after [[Samuel Courtauld|Samuel Courtauld & Co.]] had taken over in [[1904]], Viscose manufacture became big business. By the twenties and thirties it had almost completely replaced the traditional cotton and wool for women’s stockings and underwear. Similar changes occurred in the US and in Europe, too. Viscose was also being used for linings and furnishing fabrics; providing the staple for towels and table-cloths and was being made into high tenacity yarn for tyres. Yet other uses included the manufacture of sponges and absorbent cloths. |
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Making Viscose film had been tried by Cross in the 1890s but it was in Switzerland and France that major successes were achieved. By 1913 C.T.A. established La Cellophane SA. Ten years later [[DuPont|DuPont Cellophane Co.]] was set up in the USA and in 1935 [[British Cellophane Ltd]] was established in [[Bridgwater]], [[Somerset]]. |
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Viscose is becoming less common because of the polluting effects of carbon disulfide and other by-products of the process, and resultantly the [[Bridgwater]] factory closed in [[2005]]. |
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==External Links== |
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* [http://www.plastiquarian.com/viscose.htm Plastiquarian.com brief on Viscose] |
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[[de:Viskose]] |
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[[fr:Viscose]] |
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[[it:Viscosa]] |
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[[ja:ビスコース]] |
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[[nl:Viscose]] |
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[[Category:Textiles]] |
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Latest revision as of 23:46, 13 August 2020
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