Solvent spun rayon, modified cellulose fibers and derivatives
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Solvent spun rayon, modified cellulose fibers and derivatives a symposium sponsored by the Cellulose, Paper, and Textile Division at the 173rd Meeting of the American Chemical Society, New Orleans, La., March 21-23, 1977 by

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Published by ACS in Washington .
Written in English

Subjects:

  • Rayon.

Book details:

Edition Notes

StatementAlbin F. Turbak, editor.
SeriesACS symposium series -- 58
ContributionsTurbak, Albin F., American Chemical Society. Cellulose, Paper and Textile Division., American Chemical Society (Meeting), (173rd : 1977 : New Orleans)
The Physical Object
Paginationix,269p. ;
Number of Pages269
ID Numbers
Open LibraryOL19901710M

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In Solvent Spun Rayon, Modified Cellulose Fibers and Derivatives; Turbak, A.; ACS Symposium Series; American Chemical Society: Washington, DC, SOLVENT SPUN RAYON, MODIFIED CELLULOSE FIBERS 14 p r e c i p i t a t e a s o l i d mass, as compared to t r u l y spinning f i b e r s w i t h reasonable p h y s i c a l p r o p e r t i e s. Get this from a library! Solvent spun rayon, modified cellulose fibers and derivatives: a symposium. [Albin F Turbak; American Chemical Society. Cellulose, Paper, and Textile Division.; American Chemical Society. Meeting;]. Wood cellulose, caustic soda and carbon disulfide, the major raw materials for rayon production by the existing viscose process, are not dependent upon oil and will continue to be available in ample supply. On the other hand, the viscose process is energy intensive and has emission problems. The compatibility of cellulose with lignin is demonstrated throughout the plant world. This compatibility is not necessarily shown as an intimate mixture of the two polymers, but rather as a matrix structure of cellulose fibers in lignin. Although chemical pulping systems have been developed to provide dissolving pulps free of lignin, it is surprising that there appear to be no .

A consequence is that to prepare a useful cellulose acetate the cellulose must be completely esterified to a soluble triacetate and then subsequently hydrolyzed to the desired acetyl value. A desirable alternative to prepare cellulose acetate would be to dissolve the cellulose in a suitable solvent, react it homogeneously to the desired acetyl value, and quench the reaction to give .   In the present research, the major aim was to design a thermoplastic cellulose derivative and produce filamentous fibers from it using a solvent-free, melt-spinning process. Improved thermal processability of raw cellulose by chemical modification and polymer blending was crucial for successful melt : Yoshitaka Aranishi, Yoshiyuki Nishio. Fibers produced from cellulosic materials that cannot be used as fibers in their natural form. The cellulose is chemically changed during production so the resulting fibers are cellulose derivatives known as esters. Acetate and triacetate are derivative cellulosic fibers. Fibers with a high wet modulus and intermediate tenacity were readily produced from proton donor systems involving hydroxylic coagulation baths such as water, alcohols and glycols. A wide variety of fiber cross sections could be produced and proved to be related to the nature of the regenerant employed during spinning.

B.S. Gupta, in Biotextiles as Medical Implants, Rayon. Rayon is a regenerated cellulose fiber, which, although chemically similar to cotton, differs in that its molecular weight is about one-fifth and crystallinity about one-half that of cotton. These differences make the traditional or regular rayon relatively weaker and more extensible, but about twice as .   In a binary polymeric blend, the compatibility of cellulose and proteins is influenced by the characteristics of each polymer in the employed solvent system as well as processing conditions. Therefore, utilizing solvents that can dissolve cellulose and proteins, and coagulants that are non-solvents for both polymers is of by: 1. The carbon fibers used by Swan & Edison in the nineteenth century were also used a century later as reinforcements for sophisticated plastic composites. L.H. Despaissis patented the cuprammonium process for the production of regenerated cellulose (rayon) from a solution of cellulose and cuprammonium hydroxide (Schweitzer’s reagent) in (10).Author: Raymond B. Seymour, Herman F. Mark, Linus Pauling, Charles H. Fisher, G. Allan Stahl, L. H. Sperling. Nylon and polyester are used for outer layers of coats and jackets because they are non absorbent and the smooth straight fibers pack closely to create compact and dense fabrics. True A cotton/polyester blend shirt where both fibers are found in the same yarn.