viscose process definition of viscose process in the Free Online Encyclopedia.

viscose process (vĭs`kōs), method widely used for the commercial preparation of rayon rayon, synthetic fibers made from cellulose or textiles woven from such fibers; more rayon is manufactured than any other synthetic fiber. The name was adopted (1924), in preference to "artificial silk," by the U.S. Dept.
..... Click the link for more information. . Cellulose, prepared from either wood pulp or, less commonly, cotton linters, is treated with sodium hydroxide (an alkali) and then with carbon disulfide, the resulting product being a substance called cellulose xanthate. Dissolved in sodium hydroxide, this alkaline cellulose xanthate forms a thick solution called viscose. Rayon yarn is made by forcing the viscose through tiny openings in a spinneret into an acid solution, which coagulates it in the form of fine strands. Most of the rayon manufactured today is produced by this method, al though other processes are also in use. The viscose process was discovered in 1892 by the English chemist Charles Frederick Cross and his collaborator, Edward John Bevan.

viscose process [′vis‚kōs ‚prä·səs]

(chemical engineering)

A process for the manufacture of rayon by treating cellulose with caustic soda, and with carbon disulfide to form cellulose xanthate, which is then dissolved in a weak caustic solution to form the viscose; fibers are used as silk substitutes.

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No references found	Till now, the Lyocell technology still follows the conventional viscose process using the pulp with low hemicelluloses content as the raw material [1-3], which is to guarantee a high yield of fiber in the conventional viscose process. Influence of hemicelluloses on the structure and properties of ... by Zhang, Huiru; Tong, Mingwei / Polymer Engineering and Science The prevalent rayon production method used in producing tire yam - the viscose process - uses sodium hydroxide, carbon disulfide, hydrogen sulfide, sulfuric acid and zinc. The potential of PEN for tire reinforcement: replacing PET, rayon and ... by Rim, Peter B. / Rubber World In the case of the very low values for rayon emerging from Lenzing, we think full credit was being given for the fact that the pulp mills' energy needs were in fact renewable and not dependent on fossil fuels and that pulp is fed directly into the viscose process without incurring any transport or drying costs. Solvent spun cellulose fibers: an environmental perspective by Woodings, C.R. / Nonwovens Industry	Visceral Muscles visceral peritoneum visceral pouch visceratonia visceromegaly visceroptosis Vischer Vischer, Friedrich Theodor Vischer, Peter viscid Viscin Oil viscoelastic fluid viscoelastic theory viscoelasticity Viscometer viscometer gage viscometric analysis viscometry Visconti Visconti, Ennio Quirino Visconti, Gian Galeazzo Visconti, Luchino Visconti-Venosta, Emilio, marchese di Viscose Viscose Fibers viscose process viscosimeter Viscosimetry Viscosity viscosity blending chart viscosity breaking viscosity coefficient viscosity conversion table viscosity curve viscosity gage viscosity index viscosity manometer Viscosity, Second viscosity-gravity constant viscosity-temperature chart viscount Viscount Melville Sound viscountess viscous damping viscous dissipation function viscous drag viscous fillers viscous filter viscous flow viscous fluid viscous force	viscoelastic theory Viscoelasticity Viscoelasticity Viscoelasticity viscoid Viscoidal viscometer viscometer viscometer viscometer gage viscometers viscometers viscometric viscometric viscometric analysis viscometrically viscometrically viscometry viscometry Visconti Visconti Visconti, Ennio Quirino Visconti, Gian Galeazzo Visconti, Luchino Visconti, Luchino Visconti-Venosta, Emilio, marchese di viscose viscose Viscose Fibers Viscose Filament Yarn viscose process viscose rayon viscose rayon Viscose Staple Fibre viscosimeter viscosimeter viscosimeter viscosimeters viscosimeters viscosimeters viscosimetric viscosimetric viscosimetric viscosimetry viscosimetry viscosities viscosities viscosities viscosities viscosity viscosity viscosity viscosity viscosity Viscosity Agent viscosity agents viscosity agents viscosity agents viscosity blending chart viscosity breaking viscosity coefficient

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Till now, the Lyocell technology still follows the conventional viscose process using the pulp with low hemicelluloses content as the raw material [1-3], which is to guarantee a high yield of fiber in the conventional viscose process.

Influence of hemicelluloses on the structure and properties of ... by Zhang, Huiru; Tong, Mingwei / Polymer Engineering and Science

The prevalent rayon production method used in producing tire yam - the viscose process - uses sodium hydroxide, carbon disulfide, hydrogen sulfide, sulfuric acid and zinc.

The potential of PEN for tire reinforcement: replacing PET, rayon and ... by Rim, Peter B. / Rubber World

In the case of the very low values for rayon emerging from Lenzing, we think full credit was being given for the fact that the pulp mills' energy needs were in fact renewable and not dependent on fossil fuels and that pulp is fed directly into the viscose process without incurring any transport or drying costs.

Solvent spun cellulose fibers: an environmental perspective by Woodings, C.R. / Nonwovens Industry