标题: One-step programmable electrofabrication of chitosan asymmetric hydrogels with 3D shape deformation
作者: Guo, XJ (Guo, Xiaojia); Huang, WJ (Huang, Weijuan); Tong, J (Tong, Jun); Chen, LY (Chen, Lingyun); Shi, XW (Shi, Xiaowen)
来源出版物: CARBOHYDRATE POLYMERS 卷: 277 文献号: 118888 DOI: 10.1016/j.carbpol.2021.118888 出版年: FEB 1 2022
摘要: Programmable asymmetric hydrogels with tunable structure/shape or physical/chemical properties in response to external stimuli show particular significance in smart systems, but there is lack of simple, rapid, and cheap strategy to design such hydrogel systems. Herein, we report a one-step electrodeposition method to construct chitosan asymmetric hydrogels with tunable thickness and pore size that can be conveniently modulated by the process parameters. Our approach greatly simplifies the process of hydrogel preparation with complex shapes and asymmetric structure organization. The formation mechanism of asymmetric structure has been proposed, based on gelation behavior and entanglement of chitosan chains in the hydrogel-solution system under the electric field. By changing the shape of the electrodes, hydrogels with the morphology of strip, tube, flower, etc. can be obtained precisely and conveniently. They can perform programmable 2D to 3D smart dynamic deformation under pH and metal ions stimulation, indicating the broad application potential in soft robot and biosensor areas.
PubMed ID: 34893290
作者关键词: Electrofabrication; Chitosan; Asymmetric hydrogel; Shape deformation
地址: [Guo, Xiaojia; Tong, Jun; Shi, Xiaowen] Wuhan Univ, Hubei Int Sci & Technol Cooperat Base Sustainable, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci,Hubei Biomass Resourc, Wuhan 430079, Peoples R China.
[Guo, Xiaojia; Huang, Weijuan; Chen, Lingyun] Univ Alberta, Dept Agr Food & Nutr Sci, Edmonton, AB T6G 2P5, Canada.
[Huang, Weijuan] South China Agr Univ, Coll Food Sci, Guangzhou 510642, Peoples R China.
通讯作者地址: Shi, XW (通讯作者)，Wuhan Univ, Hubei Int Sci & Technol Cooperat Base Sustainable, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci,Hubei Biomass Resourc, Wuhan 430079, Peoples R China.
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