High strength and modulus polyvinyl alcohol fibers and...

Details High strength and modulus polyvinyl alcohol fibers and... High strength and modulus polyvinyl alcohol fibers and...

D - Textiles, Paper

01

F

18/602

D01F 6/14 (2006.01)

Patent

CA 1214909

ABSTRACT HIGH STRENGTH AND MODULUS POLYVINYL ALCOHOL FIBERS AND METHOD OF THEIR PREPARATION Polyvinyl alcohol of molecular weight over 500,000 (i.e. 1,500,000 to 2,500,000) is spun as a dilute solution (2-15%) in a relatively non-volatile solvent such as glycerin. The resultant gel fiber is extracted with a volatile solvent such as methanol and dried. Upon stretching at one or more stages during the process, fibers of tenacity above 10 g/denier and modulus above 200 g/denier (e.g. 18 and 450, respect- ively) are produced.

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