Title:
PRODUCTION METHOD OF POLYPEPTIDE FIBER HAVING SPIDER SILK-LIKE STRUCTURE
Document Type and Number:
Japanese Patent JP2018159137
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of spider silk-like polypeptide fibers having high toughness, by clarifying a production mechanism of natural spider silk in a spider body and a factor of the toughness and by applying the mechanism to the production of artificial fibers, and polypeptide fibers produced by the production method.SOLUTION: A production method of polypeptide fibers derived from spider silk comprises the steps of: (1) preparing a dope liquid by dissolving polypeptide derived from spider silk protein; (2) forming small fibers having granular structures having a high aspect ratio in the dope liquid; (3) constituting nano small fibers by closely orientating the nano granular structures having a higher aspect ratio than the small fibers in a tandem state and forming micro fibers by collecting and bonding the nano small fibers in the fiber axial direction; and (4) isolating the micro fibers to obtain the polypeptide fibers.SELECTED DRAWING: None
Inventors:
NUMATA KEIJI
Application Number:
JP2015162969A
Publication Date:
October 11, 2018
Filing Date:
August 20, 2015
Export Citation:
Assignee:
INSTITUTE PHYSICAL & CHEMICAL RES
International Classes:
D01F4/00
Attorney, Agent or Firm:
Mamoru Ushiki
Junji Tanaka
Moriya Kataka
Asami Saito
Junji Tanaka
Moriya Kataka
Asami Saito