贻贝仿生增韧自愈合聚天冬酰胺/氧化石墨烯凝胶的制备及性能  

Preparation and Properties of Mussel Biomimetic Toughened and Self-Healing Polyaspartamide/Graphene Oxide Gel

作　　者：付雁 刘华 刘长玲 王博[2] 杨洪雨 Yan Fu;Hua Liu;Changling Liu;Bo Wang;Hongyu Yang(College of Materials Science and Engineering,Jilin Institute of Chemical Technology,Jilin 132022,China;Jilin Provincial Key Laboratory of Straw-Based Functional Materials,Institute for Interdisciplinary Biomass Functional Materials Studies,Jilin Engineering Normal University,Changchun 130012,China;Shandong Hongxu Chemical Co.,Ltd.,Dongying 257000,China)

机构地区：[1]吉林化工学院材料科学与工程学院,吉林吉林132022 [2]吉林工程技术师范学院生物质功能材料交叉学科研究院吉林省秸秆基功能材料重点实验室,吉林长春130012 [3]山东宏旭化学股份有限公司,山东东营257000

出　　处：《高分子材料科学与工程》2022年第5期94-101,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21805108);吉林省教育厅科学技术研究项目(JJKH20210231KJ);吉林工程技术师范学院学术研究项目(BSKJ202004)。

摘　　要：无论从生物医学到水净化系统,刺激响应和自愈合的新型水凝胶材料凭借其多种协同功能,表现出不同的潜在应用。然而,所得材料往往具有明显的弱点和脆性,力学性能欠佳。在这项工作中,提出了一种新型仿生贻贝足丝的改性多巴胺共轭聚天冬酰胺(PHEA-DOPA)与氧化石墨烯(GO)构筑的水凝胶(PHEA-DOPA/GO)。以GO纳米片和硼酸(H_(3)BO_(3))作为交联剂,与PHEA-DOPA的极性官能团相互作用。与不含GO的PHEA-DOPA凝胶相比,含有GO的凝胶的储能模量和损耗模量均增加了10倍、拉伸强度增加了1.5倍。此外,含GO的PHEA-DOPA水凝胶表现出快速和自主的自愈合性质,使得该材料成为生物医学中备受青睐的生物相容性水凝胶。With multiple cooperative functions,the development of new stimulus-responsive and self-healing hydrogels exhibit different potential applications which range from biomedical to water purification systems.However,the resulting materials often have poor mechanical properties,obvious weaknesses and brittleness.In this work,a new mussel-inspired graphene oxide(GO)hydrogel based on modified dopamine-conjugated polyaspartamide(PHEA-DOPA),called PHEA-DOPA/GO,was proposed.Here,GO nanosheets and boric acid(H_(3)BO_(3))both act as cross-linking agent and interact with the polar functional groups of PHEA-DOPA.Compared with the PHEA-DOPA gel without GO,the GO-containing polymer has a 10-fold increase in storage and loss modulus,and a 1.5-fold increase in stretching.In addition,the GO-containing PHEA-DOPA hydrogel exhibits rapid and autonomous self-healing properties,making this material a highly favored biocompatible hydrogel in biomedicine.

关 键 词：聚天冬酰胺 氧化石墨烯 水凝胶 

分 类 号：TQ427.26[化学工程]