Synthesis and Shape Memory Behavior of Complex Cross-Linked Polycaprolactone Based on Comb Structure

被引：0

作者：

Wang Y. ^{[1
]}

Leng X. ^{[1
]}

Zhang W. ^{[1
]}

Gao M. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] State Key Laboratory of Fine Chemicals, Key Laboratory of Polymer Science and Engineering of Liaoning Province, Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 04期

关键词：

Comb polymer; Crosslinked structure; Polycaprolactone; Shape memory behavior;

D O I：

10.16865/j.cnki.1000-7555.2021.0115

中图分类号：

学科分类号：

摘要：

By using hydroxylated polybutadiene as macromolecular initiator, graft polycaprolactone was synthesized by ring-opening polymerization. The graft structure was determined by 1H-NMR and GPC. A series of crosslinked polymers were synthesized by crosslinking gPCL with hexamethyldiisocyanate (HDI). FT-IR, DSC, WAXD, dynamic thermo-mechanical analysis (DMA), universal stretching machine and other test methods were used to characterize and analyze the microstructure of the crosslinked polymer. The crosslinked polymer has a thermogenic shape memory effect. When the initial shape variable is 50%, the shape fixation rate can reach 99.6%. The shape can be recovered after 12 s with a recovery rate of 98.8%. The introduction of high graft structure makes the shape memory effect of materials more stable. After 5 cycles of shape memory (50% for single shape), the shape fixation rate is still 92.2% and the shape recovery rate is 93.6%. ©2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：158 / 165

页数：7

共 24 条

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