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摘要
以海藻酸钠(SA)、明胶(GEL)为共聚单体,合成了本征型自修复SA/GEL水凝胶,通过微观形貌、力学性能、溶胀性能等的表征和测试,验证了水凝胶的自愈合效果,并确定了制备水凝胶的优化条件。结果表明:SA/GEL水凝胶的自修复能力主要得益于硼酸酯键的形成,通过调整SA、GEL质量浓度及总反应物质量浓度可以有效提高水凝胶的自修复能力;当SA质量浓度为0.035g/mL、GEL质量浓度为0.035g/mL、硼砂质量浓度为0.0175g/mL时水凝胶自修复效果最好,自修复后断裂伸长率可达到550%;自修复时间为7h时,水凝胶自修复效果最佳,经过多次断裂和修复,水凝胶仍能保持较高的伸长率,表明其网络结构的稳定性和耐久性。
Abstract
Intrinsic self-healing SA/GEL hydrogels were synthesized by using sodium alginate (SA) and gelatin (GEL) as copolymer monomers.The self-healing effect of the hydrogels was verified through the characterization and testing of microscopic morphology,mechanical properties,and dissolution properties,etc.,and the optimized conditions for the preparation of hydrogels were determined.The results showed that the self-healing ability of SA/GEL hydrogel was mainly due to the formation of borate bond,and the self-healing ability could be effectively improved by adjusting the mass concentration of SA,GEL and the mass concentration of the total reactants.When the mass concentration of SA was 0.035g/mL,the mass concentration of GEL was 0.035g/mL,and the mass concentration of borax was 0.0175g/mL,the self-healing of the hydrogel was best,with an elongation at break of 550% after self-healing.When the self-healing time was 7h,the hydrogel had the best self-healing effect,and the hydrogel could still maintain a high elongation rate after many breaks and repairs,indicating the stability and durability of its network structure.
关键词
海藻酸钠
/
明胶
/
水凝胶
/
自修复
Key words
sodium alginate
/
gelatin
/
hydrogel
/
self-healing
自修复海藻酸钠/明胶水凝胶的制备及其性能研究[J].
化工新型材料, 2025, 53(9): 165-169 DOI:10.19817/j.cnki.issn1006-3536.2025.09.014
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基金资助
国家先进印染技术创新中心(ZJ2021A09)
