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Thermal decomposition of cellulose/synthetic polymer blends containing grafted products. II. Cellulose/polyacrylonitrile blends
Author(s) -
Nishioka Noboru,
Nakano Yoshihiro,
Hirota Tomoyasu,
Fujiwara Naoya,
Uno Masakuni
Publication year - 1996
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/(sici)1097-4628(19960222)59:8<1203::aid-app1>3.0.co;2-g
Subject(s) - thermogravimetry , polyacrylonitrile , materials science , differential scanning calorimetry , cellulose , thermal decomposition , thermal stability , acrylonitrile , polymer chemistry , polymer blend , glass transition , chemical engineering , composite material , polymer , organic chemistry , chemistry , copolymer , engineering , physics , thermodynamics
The homogeneous grafting of acrylonitrile onto cellulose was carried out in a dimethyl sulfoxide/paraformaldehyde solvent system. The grafted products were added to cellulose/polyacrylonitrile (PAN) blends as compatibilizers. The thermal decomposition behavior of the blends was investigated by thermogravimetry. The thermal stability of the blends with higher grafted product content was lower by more than 100°C than that of the blends without grafted product. The accessibility values of the former blends were larger than those of the latter. The microphase‐separated structures of the grafted product blends were finer than those without the product. Dynamic mechanical measurements and differential scanning calorimetry were performed to estimate the glass transition temperatures, T g , of the blends. The variation in T g was smaller than that in characteristic temperatures determined by thermogravimetry. The difference in thermal decomposition behavior was correlated to that in compatibility. Thermogravimetry was found to be effective for estimating the compatibility in cellulose/PAN blends containing grafted products. © 1996 John Wiley & Sons, Inc.