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Improvement in impact strength of modified cardanol‐bonded cellulose thermoplastic resin by adding modified silicones
Author(s) -
Soyama Makoto,
Kiuchi Yukihiro,
Iji Masatoshi,
Tanaka Shukichi,
Toyama Kiyohiko
Publication year - 2014
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.40366
Subject(s) - materials science , cardanol , izod impact strength test , thermoplastic , composite material , silicone , glass transition , epoxy , cellulose , impact resistance , polymer chemistry , ultimate tensile strength , polymer , organic chemistry , chemistry
The impact strength of cellulose diacetate (CDA) bonded with a modified cardanol (3‐pentadecylphenoxy acetic acid: PAA) was greatly improved up to 9 kJ/m 2 by adding a relatively small amount of modified silicones while suppressing a decrease in bending strength. In our recent research, this thermoplastic resin (PAA‐bonded CDA) exhibited high rigidity, glass transition temperature, and water resistance. However, its impact strength was insufficient for use in durable products. Therefore, silicones modified with polyether, amino, and epoxy groups were investigated as possible ways to improve the impact strength. The results show that adding polyether‐modified silicone (polyether silicone) with moderate polarity relative to PAA‐bonded CDA resulted in shearing deformation greatly enhances its impact strength while maintaining other properties, including glass transition temperature ( T g ), water resistance, and thermoplasticity. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40366.