文献类型：期刊文献

英文题名：Mussel-Inspired Tough Double Network Hydrogel As Transparent Adhesive

作者：Wang, Xiaohan[1];Si, Yi[3];Zheng, Kai[1];Guo, Xuhong[1,2,4];Wang, Jie[1];Xu, Yisheng[1,2,4]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China;[3]Fudan Univ, Zhongshan Hosp, Dept Vasc Surg, 180 Fenglin Rd, Shanghai 200032, Peoples R China;[4]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Xinjiang 832000, Peoples R China

年份：2019

卷号：1

期号：11

起止页码：2998

外文期刊名：ACS APPLIED POLYMER MATERIALS

收录：;EI(收录号：20213610850065);WOS:【SCI-EXPANDED(收录号:WOS:000496040500023)】；

基金：Authors X.W., K.Z., and Y.X. received funding from by the NSFC Grants (21676089), International One belt One Road Collaboration Project of Shanghai (18490740300), Shanghai talent development fund (2017038), the Fundamental Research Funds for the Central Universities (222201717013), and the 111 Project of the Ministry of Education of China (B08021).

语种：英文

外文关键词：adhesive; chemical cross-linker; double network hydrogel; HA-DM; nonmonotonic effect; transparency

摘要：Hydrogels with excellent adhesive and mechanical properties have attracted extensive attraction, whereas few "tough and sticky" hydrogels have been successfully prepared with desirable and tunable performance. In this work, dopamine-modified hyaluronic acid (HA-DM) was first introduced to the double network (DN) system, which greatly improved the adhesive and mechanical performance of the original HA-acrylamide (AAm) DN hydrogel. The prepared mussel-inspired hydrogel features instant and flexible bonding capability (adhesive strength up to 90 kPa) and high transparency (transmittance up to nearly 100%), which could serve as a novel type of transparent adhesive for various uses. Moreover, by modulating external parameters such as pH, Fe3+ and HA-DM concentration of the precursor solution, protonation state of hyaluronic acid and chemical cross-linking density of PAAm chains within the hydrogel network could be controlled to achieve well-tuned mechanical and adhesive properties. Meanwhile, the structure-property relationship of this hydrogel system was further investigated by establishing correlation between overall hydrogel properties and internal structural parameters obtained by rheology, swelling ratio, and scanning electron microscopy (SEM) tests. Therefore, as an effective approach to enhancing the adhesive and mechanical properties of the hydrogel, this mussel-inspired practice would provide valuable insight into designing a functional hydrogel and elastomer for various applications.