A Self-healable, recyclable and degradable soft network structure material for soft robotics

被引:9
作者
Chen, Rui [1 ]
Li, Xin [1 ]
Xiong, Qin [2 ]
Zhu, Xinyu [1 ]
Wang, Huigang [1 ]
Wang, Wenbiao [3 ]
Bao, Guanjun [3 ]
Chen, Zhen [4 ]
Cao, Changyong [4 ,5 ,6 ]
Luo, Jun [1 ,7 ]
机构
[1] Chongqing Univ, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China
[2] Southwest China Res Inst Elect Equipment, Chengdu 610036, Peoples R China
[3] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Zhejiang, Peoples R China
[4] Case Western Reserve Univ CWRU, Dept Mech & Aerosp Engn, Cleveland, OH 44106 USA
[5] Case Western Reserve Univ, Dept Elect Comp & Syst Engn, Cleveland, OH 44106 USA
[6] Louis Stokes Cleveland VA Med Ctr, Adv Platform Technol APT Ctr, Cleveland, OH 44106 USA
[7] Shanghai Univ, Sch Mechatron Engn & Automat, Shanghai 200444, Peoples R China
基金
中国国家自然科学基金;
关键词
Soft material; Self-healable; Recyclable; Degradable; Soft robots; Soft gripper; HIGH-STRENGTH; ELASTOMER; HYDROGELS; FABRICATION;
D O I
10.1016/j.matdes.2023.111783
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Soft materials enable soft robots to accommodate unstructured working environments robustly. However, they may be easily damaged and destroyed due to their weak mechanical properties. Moreover, most soft materials are not repairable or degradable after being broken or abandoned, result-ing in new environmental burdens. Here, a self-healable, recyclable, and degradable soft material (SRDSM) with a network structure formed with gelatin and polyvinyl alcohol (PVA) is reported. The SRDSM exhibits a fracture strength of 3-4 MPa and a stretchability of up to 300 %-400 % by controlling the composition ratio and drying time. Results show that the SRDSM can recover 90 % of its original mechanical strength after healing and 95 % after recycling. An SRDSM-based soft gripper is demonstrated that can be self-healed under thermal cycling after minor damage. It can be recycled and remanufactured to restore its original functionality after severe damage. Furthermore, the soft gripper can decomposes and degrades entirely after contact with water. This research provides an enabling material to develop environmental-friendly and recyclable soft robots, reducing their negative environmental impact.& COPY; 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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页数:10
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