文献类型：期刊文献

英文题名：Synthesis of cellulose-based double-network hydrogels demonstrating high strength, self-healing, and antibacterial properties

作者：Wang, Yixi[1,2,3,4];Wang, Zhicun[1,2,3,4];Wu, Keliang[1,2,3,4];Wu, Jianning[1,2,3,4];Meng, Guihua[1,2,3,4];Liu, Zhiyong[1,2,3,4];Guo, Xuhong[1,2,3,4,5]

机构：[1]Shihezi Univ, Sch Chem & Chem Engn, Shihezi 832003, Xinjiang, Peoples R China;[2]Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi 832003, Xinjiang, Peoples R China;[3]Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut, Shihezi 832003, Xinjiang, Peoples R China;[4]Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing, Shihezi 832003, Xinjiang, Peoples R China;[5]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：168

起止页码：112

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20171403515259);WOS:【SCI-EXPANDED(收录号:WOS:000401105000013)】；

基金：This work was supported financially by funding from the National Natural Science Foundation of China (51662036 & 21467024) and Bingtuan Innovation Team in Key Areas (2015BD003).

语种：英文

外文关键词：Hydrogel; Double network; High strength; Self-healing; Antibacterial

摘要：Novel antibacterial double-network (DN) hydrogels with superior mechanical and self-healing properties are developed via the UV-initiated copolymerization of polyacrylic acid (PAA)-grafted quaternized cellulose (QCE) and polyvinyl alcohol (PVA). The QCE functioned as an antibacterial agent, resulting in excellent antibacterial capability (antibacterial rate >93%). The hydrogels are thus protected from microbial attack in natural environments, prolonging their lifetime. The PVA functioned as a physical cross-linker, resulting in superior mechanical properties. At PVA and QCE contents of 8% and 1.5%, respectively, the strain and stress at break of hydrogel were 465.37% and 1.13 MPa, respectively. The hydrogel maintained good self-healing properties owing to ionic bonding between the ferric ions and carboxylic groups, and hydrogen bonding between the PVA molecules. The hydrogel was responsive to pH; its water-holding ability could be controlled by changing the pH. The material is simply prepared and used. Hydrogels with such excellent properties could be applied in various biomedical fields. (C) 2017 Published by Elsevier Ltd.