作者：Jiajun Xu, Xiuyan Ren, Guanghui Gao
关键字：Hydrophobic association hydrogel Anionic surfactant Amphoteric surfactant Fatigue resistant Self-healing
论文来源：期刊
发表时间：2018年

Traditional hydrophobic association (HA) hydrogels can obtain excellent mechanical properties in the

presence of anionic surfactants. However, such surfactants are sensitive to salt solutions, resulting in

large fluctuation of mechanical properties for hydrogels. Here, a combined surfactant consisting of

anionic surfactants (sodium dodecyl sulfate, SDS) and amphoteric surfactants (dodecyl dimethyl betaine,

BS-12) was successfully introduced into HA hydrogels as stable physical crosslinking points. The resulting

SDS/BS-12-HA hydrogels exhibited high tensile stress up to about 700 kPa. Moreover, the hydrogels

demonstrated salt-inactive, self-healing and fatigue resistance properties owing to their unique dynamic

and reversible physical crosslinking structure. Therefore, it''''s envisioned that this work may open a new

method to develop a soft salt-inactive material with stable and excellent mechanical properties for

extending the application range of hydrogels.