A polycaprolactone-based syntactic foam with bidirectional reversible actuation
A polycaprolactone-based syntactic foam with bidirectional reversible actuation
复制标题
DOI：
10.1002/app.45225
复制
发表时间：
2017-09-10
影响因子：
3
通讯作者：
Li, Guoqiang
中科院分区：
文献类型：
--
作者：
Lu, Lu;Cao, Jinbao;Li, Guoqiang
采用体积比为40%的玻璃微球与过氧化苄交联制备了聚己内酯基复合泡沫材料。采用红外光谱（FTIR）、差示扫描量热仪、扫描电镜、动态力学分析和材料测试系统对合成泡沫的化学、热、表面和力学性能进行了表征。该交联PCL （cPCL）复合泡沫具有明显的双向形状记忆效应（2W-SME）。具体而言，在选定的外部负载和温度窗口下，系统在冷却时约有10%的伸长率，在加热时约有10%的收缩率。编程被证明是调整cPCL语法泡沫的一个突出的2W-SME的关键参数。该系统具有低密度、延展性、高抗压强度、水密性等综合物理/机械性能，以及双向可逆驱动，可广泛应用于生物医学设备、软体机器人、飞机和密封剂等不同领域。(c) 2017 Wiley期刊公司j:。变异较大。自然科学学报，2017,34(4):45225。
A polycaprolactone (PCL) based syntactic foam was prepared by incorporating 40% by volume of glass microspheres and crosslinking the PCL matrix with benzyl peroxide. FTIR, differential scanning calorimeter, scanning electron microscopy, dynamic mechanical analysis, and material testing system were employed to elucidate the chemical, thermal, surface, and mechanical properties of the syntactic foam. This crosslinked PCL (cPCL) syntactic foam displayed a clear two-way shape memory effect (2W-SME). Specifically, around 10% elongation upon cooling and 10% contraction upon heating were observed for the system at selected external loads and temperature windows. Programming was shown to be the key parameter to tune a prominent 2W-SME of the cPCL syntactic foam. With the combined physical/mechanical properties (low density, ductile, high compressive strength, water tightness, etc.), together with its bidirectional reversible actuation, the system developed may be good for broad applications in different fields such as biomedical devices, soft robots, aircrafts, and sealants. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45225.