一种低共熔溶剂制备明胶基膜前驱液特性研究  

Study on the Characteristics of Gelatin-based Film Precursor Solution Prepared Using a Deep Eutectic Solvent

作　　者：肖娅[1,2] 吴婷 刘文涛[1,2] 程飞 陈慧[1,2] XIAO Ya;WU Ting;LIU Wentao;CHENG Fei;CHEN Hui(College of Biomass Science and Engineering,Sichuan University,Chengdu 610065,China;National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学轻工科学与工程学院,四川成都610065 [2]四川大学制革清洁技术国家工程实验室,四川成都610065

出　　处：《皮革科学与工程》2024年第5期25-31,59,共8页Leather Science and Engineering

基　　金：国家自然科学基金(22078209);成都市科技项目(2022-YF05-00672-SN)。

摘　　要：以明胶为原料,经一种三水乙酸钠/尿素/水-低共熔溶剂(DES/H_(2)O)体系溶解后制备明胶基膜前驱液。与传统水体系溶解相比,DES/H_(2)O溶解的明胶暴露出更多活性基团,以碳二亚胺盐酸盐为交联剂可与聚乙烯醇形成更多酯键。对获得的明胶基膜前驱液进行表征,结果表明,DES/H_(2)O体系中DES含量为60%时(以DES/H_(2)O溶液总质量为基准),所制备的明胶基膜前驱液的透光率为95.23%,粒径为1524.0 nm,结晶温度为-31℃,当剪切速率为10 s^(-1)时,黏度为449.07 mPa·s。表明此明胶基膜前驱液的交联作用较强,相容性较好,内部结构稳定,为制备具有较好物化性能的明胶基膜提供了新方法。Using gelatin as the raw material,a homogeneous solution was prepared by dissolving it in a ternary system of sodium acetate trihydrate/urea/water(DES/H_(2)O).Compared to traditional water system,gelatin dissolved by DES/H_(2)O can expose more active functional groups.Therefore,more ester bonds could be formed between gelatin and polyvinyl alcohol when using carbon diimide hydrochloride as a cross-linking agent.Results indicate that,when DES/H_(2)O solvent contained 60% DES was used(based on the total mass of the DES/H_(2)O solution),the prepared gelatin-based film precursor exhibited 95.23% of transmittance,1524.0 nm of particle size,and-31℃of crystallization temperature.At a shear rate of 10 s^(-1),its viscosity was 449.07 mPa·s.These findings suggest that the prepared gelatin-based precursor solution demonstrates strong cross-linking effect,good compatibility,and stable internal structure,providing a novel method for processing gelatin-based films with favorable physicochemical properties.

关 键 词：明胶 低共熔溶剂 交联 明胶基膜 前驱液 

分 类 号：TS206.3[轻工技术与工程—食品科学]