文章摘要
Preparation and properties of ethylene-co-vinyl acetate rubber/Starch nanocomposites
Received:March 06, 2017  Revised:March 06, 2017
DOI：
Key Words: NSt; EVM; KH570; dual-crosslinked system; mechanical properties
Author NameAffiliationE-mail
Zhao Xiyuan Jiangnan University zhaoxiyuan0510@163.com 
Ma Piming* 江南大学 化学与材料工程学院 p.ma@jiangnan.edu.cn 
Song Shiqiang 上海交通大学 化学与化工学院  
Dong Weifu 江南大学 化学与材料工程学院  
Chen Mingqing 江南大学 化学与材料工程学院  
Zhang Yong 上海交通大学 化学与化工学院  
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Abstract:
      Nano Starch (NSt) was prepared by means of reversed-phase titration and used to prepare ethylene-co-vinyl acetate rubber/Starch (EVM/NSt) nanocomposites. The effects of methacryloxy propyl trimethoxyl silane (KH570) on the properties of nanocomposites were investigated. The results showed that, the average diameter of the prepared NSt was 130 nm. The NSt showed remarkable reinforcing effect on the EVM, the tensile strength (Ts) was enhanced from 2.9 MPa to 9.2 MPa with the NSt loading of 15 phr. What’s more, NSt could be grafted to EVM chains in the presence of KH570 by chemical bonding, improving the interfacial interaction between NSt fillers and EVM matrix. Besides, Nst played a role of second crosslink point to build up the dual-crosslinked system, leading to further increase of Ts. When 2.0 phr KH570 was added, the Ts of EVM/NSt nanocomposite was increased to 13.2 MPa and the elongation at break (Eb) was 600%.
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