期刊
GELS
卷 8, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/gels8090580
关键词
zwitterionic hydrogels; mechanical properties; tough hydrogel; double network hydrogel; dual-cross-linked hydrogels; nanocomposite hydrogels; anti-fouling; mechanical energy dissipation
资金
- National Natural Science Foundation of China [21975216, 21674092, 21474085]
- Natural Science Foundation of Zhejiang Province [LZ20B040001]
- National Key Research and Development Program of China [2017YFB0702502]
Zwitterionic hydrogels have excellent application potential but their mechanical properties are weakened due to strong hydration layer. The anti-polyelectrolyte effect in ionic solution further restricts their application value. Various methods for strengthening mechanical properties have been studied, including enhancing intermolecular interaction forces and polymer network structure design.
As a nonspecific protein adsorption material, a strong hydration layer provides zwitterionic hydrogels with excellent application potential while weakening the interaction between zwitterionic units, leading to poor mechanical properties. The unique anti-polyelectrolyte effect in ionic solution further restricts the application value due to the worsening mechanical strength. To overcome the limitations of zwitterionic hydrogels that can only be used in scenarios that do not require mechanical properties, several methods for strengthening mechanical properties based on enhancing intermolecular interaction forces and polymer network structure design have been extensively studied. Here, we review the works on preparing tough zwitterionic hydrogel. Based on the spatial and molecular structure design, tough zwitterionic hydrogels have been considered as an important candidate for advanced biomedical and soft ionotronic devices.
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