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Hofmeister Effect-Assisted Strong Natural Biopolymer-Based Hydrogels with Multi-Functions
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2021-08-16 , DOI: 10.1002/cjoc.202100408
Yaqian Cai 1 , Jiachuan Shi 1 , Fangzhe Liu 1 , Haichao Li 1 , Xinya Man 1 , Shuang Guan 1
Affiliation  

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.image

中文翻译:

Hofmeister 效应辅助的多功能强天然生物聚合物水凝胶

近年来,基于天然生物聚合物的水凝胶因其优异的生物相容性而被广泛研究。然而,多功能且坚韧的天然生物聚合物基水凝胶的制备仍然是一个具有挑战性的问题。在此,使用明胶和羧甲基壳聚糖 (CMCS) 通过一步浸泡法制备了一种基于天然生物聚合物的水凝胶。制备的水凝胶不含任何合成聚合物和交联剂,具有完全物理交联结构。由于霍夫迈斯特效应带来的疏水相互作用,浸泡后的水凝胶的力学性能(拉伸应力和应变可达3.77 MPa和1082%)优于常规蛋白质水凝胶。此外,制备的明胶/羧甲基壳聚糖(Gel/CMCS)水凝胶表现出多种吸引人的特性,包括良好的形状记忆性、抗疲劳性、导电性、保水性、药物释放性、抗菌性和可回收性。该策略为制备具有优异机械性能和多功能的水凝胶开辟了新的视野,可以扩展其在生物医学领域和其他相关领域的应用。图片
更新日期:2021-10-14
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