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Effect of solvent or hydrophilic polymer on the hydration melting behavior of polyacrylonitrile
Author(s) -
Min Byung Ghyl,
Son Tae Won,
Kim Byoung Chul,
Lee Chul Joo,
Jo Won Ho
Publication year - 1994
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.1994.070540405
Subject(s) - polyacrylonitrile , polymer chemistry , solvent , copolymer , ethylene glycol , polymer , materials science , acrylic acid , chemical engineering , melting temperature , chemistry , organic chemistry , composite material , engineering
The effect of solvent, DMF, and hydrophilic polymer on the hydration melting behavior of Tae Kwang polyacrylonitrile‐based copolymer (T‐PAN) was investigated by DSC measurement. The melting temperature ( T m ) of T‐PAN was sharply lowered by incorporating water under autogenous pressure, but leveled off above a critical water content: 23 wt %. However, an additional incorporation of DMF into the hydrated T‐PAN further lowered the T m , even above the critical water content. On the other hand, addition of water‐soluble poly(acrylic acid), poly(vinyl alcohol), and poly(ethylene glycol) or water‐swellable starch to the hydrated PAN slightly raised the T m . © 1994 John Wiley & Sons, Inc.