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形状记忆高分子材料是一种能记住变形前形状,并在一定环境刺激下得到回复的智能材料.其独特的性质使其可以应用于生物医用、电线电缆、汽车工业、航空航天等领域.脂肪族聚酯以其优异的生物相容性、生物降解性,以及适合的热转变温度范围,在具有形状记忆功能的生物医用材料的设计开发中扮演着越来越重要的角色.本文重点介绍了以聚乳酸(PLA)、聚对二氧环己酮(PPDO)、聚丁二酸丁二醇酯(PBS)、聚十五烷酸酯(PPDL)和聚己内酯(PCL)等为基本组成链段,以物理交联和化学交联为网点结构的脂肪族聚酯共聚物、交联网络及互穿网络在形状记忆材料设计中的应用,阐述了链段拓扑结构对形状记忆行为的影响.
Shape memory polymer is a kind of smart material that can remember the shape before deformation and get the response under certain environmental stimuli, and its unique properties make it suitable for biomedical, wire and cable, automotive industry, aerospace and other fields. Aliphatic polyesters play an increasingly important role in the design and development of biomedical materials with shape memory because of their excellent biocompatibility, biodegradability and suitable temperature range of thermal transition. Polylactic acid (PLA), polydioxanone (PPDO), polybutylene succinate (PBS), poly pentadecanoate (PPDL) and polycaprolactone (PCL) The basic composition of the segment, the physical crosslinking and chemical crosslinking as the network structure of the aliphatic polyester copolymer, cross-linked network and interpenetrating network in the shape memory material design application, elaborated the chain segment topology shape memory behavior Impact.