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Formation of cracks on photodegraded nylon 6 filaments
Author(s) -
Fujiwara Y.,
Zeronian S. H.
Publication year - 1982
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.1982.070270803
Subject(s) - materials science , composite material , residual stress , shrinkage , irradiation , perpendicular , cracking , ultraviolet , nylon 6 , polymer , physics , geometry , mathematics , optoelectronics , nuclear physics
Cracks were found on the surface of drawn nylon 6 filaments irradiated with ultraviolet (UV) light from a mercury lamp under various humidities at room temperature. The cracks were formed perpendicular to the fiber axis and were of varying sizes. No cracks were observed on undrawn filaments or drawn filaments exposed to UV light in a dry atmosphere. Considerable shrinkage was found in drawn samples by thermomechanical analysis indicating the presence of residual stress in the material. The cracking is explained in terms of the residual stress and plasticization by moisture.