Process for making silk fibroin fibers

Details Process for making silk fibroin fibers Process for making silk fibroin fibers

1992-01-27

1993-10-12

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264204, 26421111, 26421116, D01F 402

Patent

active

052522857

ABSTRACT:
The present invention relates to a process for spinning silk fibers. The process involves dissolving silk fibroin in an aqueous salt solution, removing the salt from the solution, followed by removal of the water to form a regenerated silk material. The silk material is then dissolved in hexafluoroisopropanol to form a fiber-spinnable solution.

REFERENCES:
patent: Re22650 (1945-06-01), Bley
patent: 1934413 (1933-11-01), Esselen
patent: 2107959 (1938-02-01), Rossner et al.
patent: 5171505 (1992-12-01), Lock
U.S. patent application Ser. No. 07/618,505 filed on Nov. 28, 1990.
English Translation of Japanese Reference 57-4,723 published on Jan. 27, 1982.
English Translation of Japanese Reference 2-240,165 published on Sep. 25, 1990.
J. Magoshi, "Physical Properties and Structure of Silk: 4.Spherulites Grown from Aqueous Solution of Silk Fibroin", Polymer, vol. 18, pp. 643-646 (Jul. 1977).
Ichimura & Okuyama, "X-Ray Diffraction of Stretched Silk Fibroin Films of the Silk I Crystal Type", Sen'i Gakkaishi, vol. 45, No. 8, pp. 345-349 (1989).
Bhat and Ahirrao, "Investigation of the Structure of Silk Film Regenerated with Lithium Thiocyanate Solution", Journal of Polymer Science, vol. 21, pp. 1273-1280 (1983).
Jun Magoshi and Shigeo Nakamura, "Studies on Physical Properties and Structure of Silk, Glass Transition and Crystallization of Silk Fibroin", Journal of Applied Polymer Science, vol. 19, pp. 1013-1015 (1975).

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