Selectively cross-linked poly (lactide)/ethylene-glycidyl methacrylate-vinyl acetate thermoplastic elastomers with partial dual-continuous network-like structures and shape memory performances

Xu Pengwu Ma Piming Cai Xiaoxia Song Shiqiang Zhang Y. Dong Weifu Chen Mingqing · 2016

阅读量：260

乙烯-醋酸乙烯-甲基丙烯酸缩水甘油酯

期刊名称：

European Polymer Journal 2016 年 84 卷

发表日期：

2016.11.01

摘要：

Bio-based poly (lactide)/ethylene-glycidyl methacrylate-vinyl acetate (PLA/EGVA) thermoplastic vulcanizates (TPVs) with partial dual-continuous network-like structures and shape memory property were made using methylhexahydrophthalic anhydride (MHHPA) as a cross-link agent. Epoxy groups of EGVA facilitated the selective cross-link of the EGVA phase in the PLA/EGVA blends, and two different chemical structures of the TPVs are identified based on the MHHPA content. The TPVs showed a special morphology evolution of the TPV, i.e., from sea-island-type to partial dual-continuous network-like morphology. As a consequence, the PLA/EGVA-based TPVs exhibited excellent shape memory property due to the strong resilience of the selectively cross-linked EGVA phase. The selective cross-link enhanced the complex viscosity (?·