writer：Qiang Chen*, Hong Chen, Lin Zhu, and Jie Zheng*
keywords：double network hydrogel, tough
source：期刊
specific source：Macromolecular Chemistry and Physics
Issue time：2016年

Double-network (DN) hydrogel has intrinsic tough mechanical properties due to its unique two contrasting network structures. The research on DN hydrogel is a fast growing field, mainly focusing on double-network structures, formation, and interactions at the molecular level. In this trend article, we take a critical review at the latest and important research findings, current research challenges, and future research directions in DN hydrogel field. We discuss some issues on the discovery of fundamentally new phenomena versus performance benchmarking for three different types of the DN hydrogels. Finally we offer our personal opinions to several unique aspects for future DN gel research.