LDPE/SEBS共混型形状记忆聚合物的结构与性能  

The Structure and Properties of LDPE/SEBS Compound Shape Memory Polymer

作　　者：吴智华[1] 周聪[1] 孟兵[1] 羊森林[1] 杨伟[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《高分子材料科学与工程》2010年第1期95-98,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(20734005)

摘　　要：以苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物(SEBS)热塑性弹性体和低密度聚乙烯(LDPE)为主要原料,采用硫化工艺制备了LDPE/SEBS共混型形状记忆聚合物(SMP)。通过DSC、SEM、WXRD分析,测试了试样记忆性能和凝胶度,研究了固定相LDPE/可逆相SEBS配比与共混型SMP结构和性能的关系。结果表明,LDPE/SEBS配比是影响SMP互穿网络相尺寸和形状、SMP结晶度、玻璃化温度、以及SMP形状回复率、形状固定率等记忆特性的重要因素。Shape memory polymer （SMP） was prepared with thermoplastic styrene-ethylene-butadiene-styrene block eopolymer （SEBS） and low density polyethylene （LDPE） through mixture and vulcanization. The relationship between proportion of LDPE to SEBS, the structure and properties of LDPE/SEBS compound SMP were investigated by the analysis of DSC, SEM, WAXD, memory properties and getation level. The results show that： the proportion of LDPE to SEBS is an important factor of SMP interpenetrating networks phase size and shape, crystallinity, glass transition, as well as the temperature and shape recovery ratio and shape fixed rate. When the proportion of LDPE to SEBS is 3/2, the SMP network structure is uniform, size of each phase is smaller.

关 键 词：形状记忆聚合物 结构与性能 硫化 低密度聚乙烯 热塑性弹性体 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]