High strength and modulus polyvinyl alcohol fibers and method of

Details High strength and modulus polyvinyl alcohol fibers and method of High strength and modulus polyvinyl alcohol fibers and method of

1984-01-11

1986-07-08

Lesmes, George F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

525 56, 525319, 264285, D02G 300, B29C 1702

Patent

active

045992673

ABSTRACT:
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, respectively) are produced.

REFERENCES:
patent: 3751547 (1973-08-01), Kawakasumi et al.
patent: 4267016 (1981-05-01), Okazaki et al.
patent: 4344908 (1982-08-01), Smith et al.
patent: 4360488 (1982-11-01), Barham et al.
Encyclopedia of Polymer Science and Technology, vol. 14, pp. 149, 189, 190 (1971).

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