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"Freezing", morphing, and folding of stretchy tough hydrogels
Tianzhen Li1, Jiahui Wang, Liyun Zhang
1College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, P. R. China. xczhou@szu.edu.cn.
Journal of Materials Chemistry. B
|April 9, 2020
Abstract:
Highly stretchable and tough Ca-alginate/polyacrylamide hydrogels were "frozen" and folded into program-controlled shapes by exposing them to an Fe3+ ion aqueous solution. The elastic modulus of the as-made tough gels increased either in bulk or locally up to 2.90 MPa, while the toughness remained within the range from 8.18 to 4.41 kJ m-2.
