Zhang Huan, Wang Dong, Wu Ningning, Li Cuihua, Zhu Caizhen, Zhao Ning, Xu Jian
Institute of Low-dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , China.
Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China.
ACS Appl Mater Interfaces. 2020 Feb 26;12(8):9833-9841. doi: 10.1021/acsami.9b22613. Epub 2020 Feb 12.
Fabricating a single polymer network with a combination of a multi-shape memory effect (multiple-SME), solid-state plasticity, recyclability and self-healing behavior remains a challenge. We designed imine bond and ionic hydrogen bond dual cross-linked polybutadiene (PB) networks. The resulting PB networks showed a triple-shape memory effect, where imine bonds could be used to fix the permanent shape and ionic hydrogen bonds and glass transition acted as the transition segments for fixing/releasing the temporary shapes. Additionally, the dual dynamic bonds offered PB networks outstanding solid-state plasticity, recyclability and self-healing behavior. This strategy provides some insights for preparing shape memory polymers integrating multiple-SME and multi-functionality.
制造一种兼具多重形状记忆效应（multiple-SME）、固态可塑性、可回收性和自修复行为的单一聚合物网络仍然是一项挑战。我们设计了亚胺键和离子氢键双重交联的聚丁二烯（PB）网络。所得的PB网络呈现出三重形状记忆效应，其中亚胺键可用于固定永久形状，离子氢键和玻璃化转变充当固定/释放临时形状的转变段。此外，双重动态键赋予PB网络出色的固态可塑性、可回收性和自修复行为。该策略为制备集成多重形状记忆效应和多功能性的形状记忆聚合物提供了一些见解。
