Tunable Thermo-Responsive Shape Memory Materials Enabled by Poly(ε-caprolactone)-Poly(2-vinyl)ethylene Glycol Copolymers via Facile Thiol-Ene Photo-Crosslink
{"title":"Tunable Thermo-Responsive Shape Memory Materials Enabled by Poly(ε-caprolactone)-Poly(2-vinyl)ethylene Glycol Copolymers via Facile Thiol-Ene Photo-Crosslink","authors":"Ming-Hang Wang, Fan Yang, Yong-Jian Zhang","doi":"10.1007/s10118-025-3255-4","DOIUrl":null,"url":null,"abstract":"<div><p>Control crosslink network and chain connectivity are essential to develop shape memory polymers (SMPs) with high shape memory capabilities, adjustable response temperature, and satisfying mechanistical properties. In this study, novel poly(<i>ε</i>-caprolactone) (PCL)-poly(2-vinyl)ethylene glycol (PVEG) copolymers bearing multi-pendant vinyl groups is synthesized by branched-selective allylic etherification polymerization of vinylethylene carbonate (VEC) with linear and tetra-arm PCLs under a synergistic catalysis of palladium complex and boron reagent. Facile thiol-ene photo-click reaction of PCL-PVEG copolymers with multifunctional thiols can rapidly access a serious crosslinked SMPs with high shape memory performance. The thermal properties, mechanical properties and response temperature of the obtained SMPs are tunable by the variation of PCL prepolymers, vinyl contents and functionality of thiols. Moreover, high elastic modulus in the rubbery plateau region can be maintained effectively owing to high-density topological networks of the PCL materials. In addition, the utility of the present SMPs is further demonstrated by the post-functionalization <i>via</i> thiol-ene photo-click chemistry.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"43 2","pages":"278 - 288"},"PeriodicalIF":4.1000,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10118-025-3255-4","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Control crosslink network and chain connectivity are essential to develop shape memory polymers (SMPs) with high shape memory capabilities, adjustable response temperature, and satisfying mechanistical properties. In this study, novel poly(ε-caprolactone) (PCL)-poly(2-vinyl)ethylene glycol (PVEG) copolymers bearing multi-pendant vinyl groups is synthesized by branched-selective allylic etherification polymerization of vinylethylene carbonate (VEC) with linear and tetra-arm PCLs under a synergistic catalysis of palladium complex and boron reagent. Facile thiol-ene photo-click reaction of PCL-PVEG copolymers with multifunctional thiols can rapidly access a serious crosslinked SMPs with high shape memory performance. The thermal properties, mechanical properties and response temperature of the obtained SMPs are tunable by the variation of PCL prepolymers, vinyl contents and functionality of thiols. Moreover, high elastic modulus in the rubbery plateau region can be maintained effectively owing to high-density topological networks of the PCL materials. In addition, the utility of the present SMPs is further demonstrated by the post-functionalization via thiol-ene photo-click chemistry.
期刊介绍：
Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985.
CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.
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