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High value polyurethane resins from rubber seed oil
Author(s) -
Hong Jian,
Yang XiaoQin,
Wan Xianmei,
Zheng Zhifeng,
Petrović Zoran S
Publication year - 2017
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5256
Subject(s) - polyol , degree of unsaturation , polyurethane , natural rubber , fatty acid , materials science , chemical structure , organic chemistry , methanol , dynamic mechanical analysis , chemistry , polymer chemistry , polymer
Abstract Rubber seed oil having high free fatty acid content and high unsaturation was used to obtain high quality polyurethane resins through epoxidation and ring opening with methanol and free fatty acids. Two polyols prepared with free fatty acids and without were cured with modified methylene diphenyl diisocyanate to obtain strong, high modulus glassy polyurethanes. The effect of structure on thermal and mechanical properties was analyzed. This showed that the polyol with free fatty acid utilized to obtain a branched structure gave superior crosslinking density and mechanical properties. © 2016 Society of Chemical Industry