期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 37, 期 3, 页码 265-270出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201500571
关键词
polymer brushes; self-healable hydrogels; supramolecular interactions
资金
- National Natural Science Foundation of China [21304105, 51303195]
- Ningbo Natural Science Foundation [2014A610127]
- Zhejiang Nonprofit Technology Applied Research Program [2015C33031]
Development of self-healing polymers with spontaneous self-healing capability and good mechanical performance is highly desired and remains a great challenge. Here, mechanical robust and self-healable supramolecular hydrogels have been fabricated by using poly(2-dimethylaminoethyl methacrylate) brushes modified silica nanoparticles (SiO2@PDMAEMA) as multifunctional macrocrosslinkers in a poly(acrylic acid) (PAA) network structure. The SiO2 nanoparticles serve as noncovalent crosslinkers, dissipating energy, whereas the electrostatic interactions between cationic PDMAEMA and anionic PAA render the hydrogel self-healing property. This process provides a simple and broadly applicable strategy to produce mechanical strong and self-healable materials.
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