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Influence of ZnCl 2 on the structure and mechanical properties of polyacrylonitrile fibers
Author(s) -
Cho Seo Hyun,
Park Jong Su,
Jo Seong Mu,
Chung In Jae
Publication year - 1994
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1994.210340314
Subject(s) - polyacrylonitrile , spinning , ultimate tensile strength , materials science , coagulation , composite material , modulus , zinc , polymer chemistry , polymer , chemical engineering , metallurgy , psychology , psychiatry , engineering
The structure and mechanical properties of polyacrylonitrile fibers containing small amounts of Zn 2+ were investigated. It is possible to interpret the influence of ZnCl 2 on the fibers by diffusion. Fibers spun from spinning dope containing ZnCl 2 may have a denser and finer structure because ZnCl 2 in the spinning dope retards the coagulation rate. The tensile strength and modulus of the fibers are much improved because of the retardation of coagulation. It is probable that the complexation between Zn 2+ and CN groups does not contribute to the improvement of the mechanical properties because the amount of ZnCl 2 added in a spinning dope is extremely small.