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

Dou, Xueyu1,2,3; Wang, Hufei2,3; Yang, Fei2,3; Shen, Hong2,3; Wang, Xing2,3; Wu, Decheng2,4

2023

10.1002/advs.202206242

ADVANCED SCIENCE   Impact Factor & Quartile

2198-3844

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 strict situations. Taking the merits of noncovalent bonds in adjustability and reversibility, the swelling property of these hydrogels can be easily customized through control of the ion species and concentrations. A dynamically reversible transition from super-swelling to anti-swelling is realized by breaking up and rebuilding the metal-coordination complexes. This facile but efficient strategy of turning the noncovalent interactions and consequently the mechanics and anti-swelling properties is imperative to achieve the rational design of high-performance hydrogels with specific usage requirements and expand their applicability to a higher stage.

anti-swelling core shell structure double-network hydrogels ionic coordination soaking strategy

SCI

English

Corresponding

Ministry of Science and Technology of China[2020YFA0908900] ; National Natural Science Foundation of China["21725403","21935011","51973226"] ; Shenzhen Science and Technology Innovation Commission[KQTD20200820113012029] ; Youth Innovation Promotion Association CAS[2019031]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000916705400001

WILEY

Web of Science

1.Shandong Normal Univ, Univ Shandong, Inst Mol & Nano Sci,Collaborat Innovat Ctr Functio, Coll Chem Chem Engn & Mat Sci,Key Lab Mol & Nano P, Jinan 250014, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Southern Univ Sci & Technol, Dept Biomed Engn, Shenzhen 518055, Peoples R China

Dou, Xueyu,Wang, Hufei,Yang, Fei,et al. One-Step Soaking Strategy toward Anti-Swelling Hydrogels with a Stiff "Armor"[J]. ADVANCED SCIENCE,2023.

Dou, Xueyu,Wang, Hufei,Yang, Fei,Shen, Hong,Wang, Xing,&Wu, Decheng.(2023).One-Step Soaking Strategy toward Anti-Swelling Hydrogels with a Stiff "Armor".ADVANCED SCIENCE.

Dou, Xueyu,et al."One-Step Soaking Strategy toward Anti-Swelling Hydrogels with a Stiff "Armor"".ADVANCED SCIENCE (2023).