writer：H. W. Zhou,* G. H. Xu, Jie Li, S. H. Zeng, X. L. Zhang, Z. H. Zheng, X. B. Ding, W. X. Chen, Q. G. W
keywords：hydrogel, double network, healing, Ce, poly(acrylic acid) (PAA).
source：期刊
specific source：Macromolecular Research
Issue time：2015年

This work aims at developing an approach to poly(acrylic acid)/cerium ions (PAA/cerium ions) double network hydrogels and exploring the self-healing properties of the hydrogels, with expectation to provide some clues for constructing new healable gel actuators and enrich the family of self-healable hydrogels. The hydrogel is covalently crosslinked by a traditional crosslinking agent N,N''-methylene bis-acrylamide to form the first network and further physically crosslinked by the ionic interaction between cerium ions and the carboxyl groups in the hydrogel network.The preparation method and self-healing behaviors of the hydrogels are investigated.