Recent advances in dynamic covalent bond-based shape memory polymers

编号 020035505

推送时间 20220808

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Recent advances in dynamic covalent bond-based shape memory polymers

来源期刊 E-Polymers

期 第355期

发表时间 20220316

关键词 dynamic covalent bonds;  shape memory polymers;  self-healing;  polymeric hydrogels;  3D printing; 

摘要 Dynamic covalent bond-based shape memory polymers (DCB-SMPs) are one of most important SMPs which have a wide potential application prospect. Different from common strong covalent bonds, DCBs own relatively weak bonding energy, similarly to the supramolecular interactions of noncovalent bonds, and can dynamically combine and dissociate these bonds. DCB-SMP solids, which can be designed to respond for different stimuli, can provide excellent self-healing, good reprocessability, and high mechanical performance, because DCBs can obtain dynamic cross-linking without sacrificing ultrahigh fixing rates. Furthermore, besides DCB-SMP solids, DCB-SMP hydrogels with responsiveness to various stimuli also have been developed recently, which have special biocompatible soft/wet states. Particularly, DCB-SMPs can be combined with emerging 3D-printing techniques to design various original shapes and subsequently complex shape recovery. This review has summarized recent research studies about SMPs based on various DCBs including DCB-SMP solids, DCB-SMP hydrogels, and the introduction of new 3D-printing techniques using them. Last but not least, the advantages/disadvantages of different DCB-SMPs have been analyzed via polymeric structures and the future development trends in this field have been predicted.

服务人员 尚玮姣

服务院士 宋湛谦

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