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Preparation of ultra‐high modulus polyvinyl alcohol fibers by the zone‐drawing method
Author(s) -
Kunugi Toshio,
Kawasumi Tamio,
Ito Takashi
Publication year - 1990
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.1990.070401123
Subject(s) - composite material , polyvinyl alcohol , materials science , modulus , melting point , elastic modulus , fiber , young's modulus , dynamic mechanical analysis , melting temperature , polymer
The zone‐drawing method has been applied to prepare ultra‐high modulus polyvinyl alcohol fibers. First, the suitable temperature for zone‐drawing was decided. In the first zone drawing, when drawing temperature was as high as near melting point, the highest draw ratio and modulus were obtained. The modulus was further increased by repeating zone drawing and heat treatment. In this study, the highest dynamic moduli were 115 GPa at room temperature and 42 GPa at 200°C. The fiber has a sharp melting peak that appeared at 246°C and a small peak at 260°C in the DSC curve.