writer：Jing Zheng, Peng Xiao, Wei Liu, Jiawei Zhang*, Youju Huang, Tao Chen*
keywords：Mechanical robust hydrogel, self-healing, supramolecular interaction,
source：期刊
specific source：Macromolecular Rapid Communications, 2016, 37, 265-270
Issue time：2016年
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 multi-functional macro-crosslinkers 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