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Tension effects on the properties of oxidized polyacrylonitrile and carbon fibers during continuous oxidation
Author(s) -
Tsai JinShy
Publication year - 1995
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760351607
Subject(s) - polyacrylonitrile , materials science , tension (geology) , composite material , carbon fibers , chemical engineering , polymer , ultimate tensile strength , composite number , engineering
In this study we used continuous oxidizing equipment to produce carbon fiber. The results show when the stretch of the fiber during continuous oxidation is increased, the orientation and modulus of resultant carbon fiber is unexpectedly decreased. This effect is much different from other published results. In this case, the stretching occurs after the cyclization of the molecular chains in the amorphous region. The stretching leads to the scission of some cyclized molecular chains in the amorphous region and the shrinkage of the crystalline region.