烷基化对竹粉/玉米醇溶蛋白复合膜材料性能的影响  

Effects of silane modification on the properties of bamboo powder/zein composite films

作　　者：魏俞涌[1] 张庆法 盛奎川[2] WEI Yuyong;ZHANG Qingfa;SHENG Kuichuan(School of Intelligent Manufacturing,Jiaxing Vocational and Technical College,Jiaxing 314036,Zhejiang,China;College of Biosystems Engineering and Food Science,Zhejiang University,Hangzhou 310058,Zhejiang,China)

机构地区：[1]嘉兴职业技术学院智能制造学院,浙江嘉兴314036 [2]浙江大学生物系统工程与食品科学学院,浙江杭州310058

出　　处：《浙江大学学报（农业与生命科学版）》2024年第5期796-804,共9页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：浙江省嘉兴市科技计划项目(2019AY11022);浙江省自然科学基金项目(LY22C160003);中国博士后科学基金项目(2021M692807)。

摘　　要：为实现玉米蛋白废弃物的高值化利用,以竹粉、玉米醇溶蛋白为原料制备复合膜材料,探究烷基化处理对竹粉/玉米醇溶蛋白复合膜材料性能的影响。结果表明:适宜浓度的硅烷偶联剂降低了竹粉的极性,提高了竹粉与玉米醇溶蛋白的相容性,延缓了玉米醇溶蛋白的热分解速率,提高了玉米醇溶蛋白的热稳定性,改善了竹粉/玉米醇溶蛋白复合膜的拉伸强度与断裂伸长率。其中,硅烷偶联剂和二氧化硅联合处理竹粉所制备的玉米醇溶蛋白复合膜材料在本研究中表现出最佳的综合力学性能,其拉伸强度、拉伸模量、断裂伸长率分别为0.23 MPa、4.67 MPa、408.07%。本研究结果可为生物质/玉米醇溶蛋白复合材料性能的提升提供技术支持。To achieve high-value utilization of corn protein waste,composite films were prepared from bamboo powder and zein,and the effects of silane modification on the properties of bamboo powder/zein composite films were studied.The results showed that the appropriate concentrations of the silane coupling agent reduced the polarity of the bamboo powder,improved the compatibility between the bamboo powder and zein,delayed the thermal decomposition rate of zein,enhanced the thermal stability of zein,and improved the tensile strength and elongation at break of the bamboo powder/zein composite films.Among all the composite film samples,the zein composite films prepared by combined treatment with a silane coupling agent and silica exhibited the best comprehensive mechanical properties,with a tensile strength of 0.23 MPa,tensile modulus of 4.67 MPa,and elongation at break of 408.07%.These results can provide technical support for the improvement of the properties of biomass/zein composites.

关 键 词：竹粉 玉米醇溶蛋白 烷基化 复合膜材料 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]