A Facile Strategy to Fabricate Polysaccharide-Based Magnetic Hydrogel Based on Enamine Bond  

作　　者：Hongchen Liu Jingru Yang Yunlei Yin Haisong Qi 

机构地区：[1]College of Textiles,Zhongyuan University of Technology,Zhengzhou,Henan 450007,China [2]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong 510640,China

出　　处：《Chinese Journal of Chemistry》2020年第11期1263-1268,共6页中国化学（英文版）

基　　金：This work was financially supported by the Program for Interdisciplinary Direction Team in Zhongyuan University of Technology,China.We are grateful for financial support from the Starting Research Fund from the Zhongyuan University of Technology.

摘　　要：of main observation and conclusion Magnetic hydrogels have found extensive applications in fields such as soft robotics,drug delivery and shape morphing.Here a facile method was fabricated to prepare polysaccharide-based magnetic hydrogels.The chitosan-Fe3O4 ferrofluid was obtained by dispersing carboxyl groups modified Fe3O4 nanoparticles uniformly in chitosan matrix.Subsequently,the magnetic polysaccharide hydrogel was obtained by simply mixing cellulose acetoacetate solution with chitosan-Fe3O4 ferrofluid.The structures and properties of the magnetic hydrogel were analyzed using Fourier-transform infrared spectroscopy,rheological recovery,responsiveness,and stability measurements.The results indicated that magnetic polysaccharide hydrogel showed pH responsiveness and excellent self-healing properties,and the hydrogel manifested outstanding stability under physiological conditions(37℃)for 72 h.In addition,the injectable polysaccharide-based hydrogel exhibited sensitive magnetic responsive and shape-shifting ability under an external magnetic field.Therefore,the strategy for the facile preparation of the magnetic polysaccharide-based hydrogel in this work could provide a benign and versatile method for achieving self-healing,responsive,injectable properties for the application in biomedical fields.

关 键 词：field. FACILE stability 

分 类 号：O62[理学—有机化学]