Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 39, Issue 11, Pages 3085-3092Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.202100408
Keywords
Natural biopolymer-based hydrogels; Mechanical properties; Polymers; Hofmeister effect; Multi-Fuctions
Categories
Funding
- Project of the Jilin Provincial Science and Technology Department, China [20190201078JC]
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The study focuses on the preparation of a natural biopolymer-based hydrogel using gelatin and carboxymethyl chitosan through a one-step soaking method. The physically crosslinked hydrogel exhibits excellent mechanical properties and various appealing characteristics, making it a promising material for applications in biomedicine and related fields.
Main observation and conclusion Natural biopolymer-based hydrogels have been extensively studied in recent years due to their excellent biocompatibility. However, the preparation of multi-functional and tough natural biopolymer-based hydrogels is still a challenging problem. Herein, a natural biopolymer-based hydrogel is prepared using gelatin and carboxymethyl chitosan (CMCS) through a one-step soaking method. The prepared hydrogel without any synthetic polymers and crosslinking agents has a fully physical crosslinking structure. Due to the hydrophobic interaction brought by the Hofmeister effect, the mechanical properties of soaked hydrogels (tensile stress and strain can reach 3.77 MPa and 1082%) are superior to conventional protein hydrogels. In addition, the prepared gelatin/carboxymethyl chitosan (Gel/CMCS) hydrogels exhibit a variety of appealing properties, including good shape memory, fatigue resistance, electrical conductivity, water retention, drug releasing, antibacterial property, and recyclability. This strategy opens up a new horizon to fabricate hydrogels with excellent mechanical properties and multiple functions, which can extend their applications in the biomedicine area and other related fields.
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