Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 39, Issue 9, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201800019
Keywords
complementary functionalities; self-driven; shape memory; stimuli-responsive hydrogels
Categories
Funding
- National Natural Science Foundation of China [51773215, 21774138]
- Natural Science Foundation of Zhejiang [LY17B040003]
- Key Research Program of Frontier Science, the Chinese Academy of Sciences [QYZDB-SSW-SLH036]
- Ningbo Science and Technology Bureau [2016C50009]
- Natural Science Foundation of Ningbo [2017A610050]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2017337, 2016268]
- Open Research Fund of Key Laboratory of Marine Materials and Related Technologies [2016Z01, 2017K03]
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Although shape memory polymers have been highlighted widely and developed rapidly, it is still a challenging task to realize complex temporary shapes automatically in practical applications. Herein, a novel shape memory hydrogel with the ability of self-deformation is presented. Through constructing an anisotropic poly(acrylic acid)-polyacrylamide (PAAc-PAAm) structure, the obtained hydrogel exhibits stable self-deformation behavior in response to pH stimulus, and the shapes that formed automatically can be fixed by the coordination between carboxylic groups and Fe3+; therefore, self-deformation and shape memory behaviors are integrated in one system. Moreover, the magnitude of auto-deformation and shape memory could be adjusted with the concentration of corresponding ions, leading to programmable shape memory and shape recovery processes.
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