Shape Memory Polymeric Materials Based on Polyesters

• Main Author: 汪昆立
• Other Authors: 陳劉旺
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/57505590955152542635

碩士 === 國立臺灣大學 === 材料科學與工程學研究所 === 83 === 　　In this study, a series of polyester were synthesized with terephthalic acid (TPA)、isophthalic acid (IPA)、ethylene glycol and various polyester diols. The relation between the results of differential scanning calorimetry (DSC)、X-ray diffraction and dynamical mechanical analysis (DMA) and shape memory effect was investigated. The morphology of fractured surface was also investigated by scanning electron microscopy (SEM). 　　The crystallinity of polyester, it was found as expected, can be adjusted by the ration of TPA/IPA. The Glass transition temperature can be reduced by introducing flexible polyester diols, such as PBA1000、PBA500 and PEA1000. The storage modulus of low crystallinity (T06) or amorphous polyesters changed drastically near Tg, so these polymers showed excellent behaviours of shape deformation、fixation and recovery. These polymers can be employed as shape memory polymeric materials.