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Preparation and Physical Properties of Porous Starch/Natural Rubber Composites
Author(s) -
Wu Jie,
Li Kuncai,
Pan Xuemei,
Liao Shuangquan,
You Jianhua,
Zhu Kaizheng,
Wang Zhifen
Publication year - 2018
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201700296
Subject(s) - materials science , natural rubber , composite material , starch , glass transition , porosity , dynamic mechanical analysis , modulus , polymer , chemistry , organic chemistry
Porous starch is modified by the addition of dodecenyl succinate anhydride (DDSA), to decrease the self‐aggregation, and then blended with natural rubber (NR) latex to obtain the modified starch/NR composites. The composites are found to have improved properties compared with the corresponding pure NR. Results of a thermal analysis show that the thermal degradation reaction of modified starch/NR composites is a two‐step reaction, with the initial ( T 0 ) and the final ( T f ) temperatures of main reaction being increased, and glass transition temperature ( T g ) slightly reduced compared with the corresponding pure NR. The curves of elastic modulus ( G ′) and loss factor (tan δ ) versus the strain of unvulcanized rubber compounds are obtained using a rubber process analyzer. Dynamic mechanical thermal analysis shows that the rolling resistance of the composites is improved by the addition of modified starch.