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Morphological changes in twisted nylon monofilament
Author(s) -
Kurokawa Masataka,
Nohara Nobuo,
Konishi Takashi
Publication year - 1981
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1981.070260517
Subject(s) - twist , materials science , diffraction , texture (cosmology) , scattering , surface (topology) , layer (electronics) , composite material , nylon 6 , surface layer , crystallography , optics , geometry , physics , chemistry , polymer , mathematics , image (mathematics) , artificial intelligence , computer science
The changes in structure of oriented nylon monofilaments due to an applied twisting action was investigated using wide angle x‐ray scattering analysis and microscopy. The surface layer of the twisted filaments changes to a single texture after being repeatedly twisted in one direction at high temperature. Simultaneously, kink bands were produced on their surface. Characteristic features of kink bands are observed on the surface layer of the filaments first twisted in one direction and then twisted in the opposite direction at high temperature. X‐ray diffraction patterns of the surface layer also changed remarkably. These changes in surface layers are related to the twist direction, the repeated number of twists, and the temperature of untwist. At lower temperatures, kink bands are not formed and a structural change to a single texture does not occur spontaneously.