One-Step Soaking Strategy toward Anti-Swelling Hydrogels with a Stiff "Armor".

ABSTRACT: Double-network (DN) hydrogels consisting of noncovalent interacting networks are highly desired due to their well-controlled compositions and environmental friendliness, but the low water resistance always impairs their mechanical strength. Here, an anti-swelling hydrogel possessing the core/shell architecture through rational regulation of multiple weak noncovalent interactions is prepared. A composite hydrogel consists of chitosan (CS) and poly(N-acryloyl 2-glycine) (PACG), readily forming the shell-structured DN hydrogel after soaking in a FeCl₃ solution because of in situ formation of chain entanglements, hydrogen bonds, and ionic coordination. The produced DN hydrogels exhibit excellent anti-swelling behaviors and mechanical durability for over half a year, even in some str

SUBMITTER: Dou X 

PROVIDER: S-EPMC10037974 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature