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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Flexible Material Based on Poly(lactic acid) and Liquid Crystal with Multishape Memory Effects
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Flexible Material Based on Poly(lactic acid) and Liquid Crystal with Multishape Memory Effects

机译：基于聚乳酸和液晶的具有多种形状记忆效应的柔性材料

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摘要

Construction of novel multishape memory materials from biobased polymers is of particular interest in recent years. Herein, a series of linear poly(lactic acid) (PLA)-based copolymers containing a smectic liquid crystal in the main-chain are designed and synthesized, of which the molecular structures are confirmed by NMR and GPC analyses. By introducing the liquid crystal, poly[4,4′-bis(6-hydroxyhexyloxy) biphenyl phenylsuccinate] (PBDPS), the brittleness of PLA is overcome, and flexible materials are successfully prepared. Relying on the crystallization of PLA as well as the π-π interaction that originated from PBDPS, the copolymers exhibit excellent thermoinduced triple- and quadruple-shape memory behaviors with high shape fixation and recovery ratios. Taking advantage of these features, the multishape memory polymers can bring more chances for versatile applications.
机译：近年来，由生物基聚合物构建新颖的多形记忆材料特别受到关注。本文中，设计并合成了一系列在主链中包含近晶液晶的线性聚乳酸（PLA）基共聚物，其分子结构通过NMR和GPC分析得到证实。通过引入液晶聚[4,4'-双（6-羟基己氧基）联苯苯基琥珀酸酯]（PBDPS），克服了PLA的脆性，并成功制备了柔性材料。依靠PLA的结晶以及源自PBDPS的π-π相互作用，该共聚物表现出优异的热诱导的三重和四重形状记忆行为，并具有高的形状固定率和回复率。利用这些特性，多形状记忆聚合物可以为通用应用带来更多机会。

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