玉米秸秆纳米纤维素-淀粉膜的制备工艺优化及性能分析  

Preparation Process Optimization and Property Analysis of Nano-cellulose-Starch Film Based on Corn Stalk

作　　者：张爱武[1] 宋亭 张丽媛[1] 于润众 ZHANG Aiwu;SONG Ting;ZHANG Liyuan;YU Runzhong(College of Food Science,Heilongjiang Bayi Agricultural University,Daqing 163319,China;College of Information and Electrical Engineering,Heilongjiang Bayi Agricultural University,Daqing 163319,China)

机构地区：[1]黑龙江八一农垦大学食品学院,黑龙江大庆163319 [2]黑龙江八一农垦大学信息与电气工程学院,黑龙江大庆163319

出　　处：《食品工业科技》2022年第11期252-259,共8页Science and Technology of Food Industry

基　　金：国际科技合作重点项目计划(2018YFE0206300);黑龙江省农垦总局重点研发项目(HKKY190407)。

摘　　要：本研究利用玉米秸秆纳米纤维素、玉米秸秆淀粉等作为成膜基材,通过共混流延法制备玉米秸秆纳米纤维素-淀粉膜。通过单因素实验和正交试验,对制备的纳米纤维素-淀粉膜的性能进行测定,考察各成膜基材对纳米纤维素-淀粉膜的机械性能、透湿系数、透光率、水溶性和透氧系数的影响,最终确定成膜液最佳配方组合:淀粉10.0%(W/V)、纳米纤维素5.0%(W/V)、羧甲基纤维素钠1.6%(W/V)、甘油2.3%(V/V)。在最优工艺条件下制备的纳米纤维素-淀粉膜综合效果最佳,并测得性能指标,膜厚(0.063±0.050)mm,抗拉强度14.92 MPa,断裂伸长率64.75%,透湿系数为2.19×10^(-12)g·m/m^(2)·s·Pa,透光率87.60%,溶解时间97.00 s,透氧系数2.75×10^(-14)cm^(3)·cm/cm^(2)·s·Pa。In this work,corn stalk nano-cellulose and corn stalk starch were used as film-forming substrates to prepare corn stalk nano-cellulose-starch film by blending-flow casting method.The properties of nano-cellulose-starch film were determined on the basis of single factor and orthogonal test.The effects of each material of film-forming on mechanical properties,moisture permeability,light transmittance,water solubility and oxygen permeability of nano-cellulose-starch film were investigated.Finally,the optimal formula combination of film-forming liquid was determined as follows:The starch was 10.0%(W/V),nano-cellulose was 5%(W/V),sodium carboxymethyl cellulose was 1.6%(W/V)and glycerol was 2.3%(V/V).Under optimal conditions,the nano-cellulose-starch film has the best comprehensive effect.The performance indexes were measured,and the membrane thickness was(0.063±0.050)mm,tensile strength was 14.92 MPa,elongation at break was 64.75%,moisture permeability coefficient was 2.19×10^(-12)g·m/m^(2)·s·Pa,light transmittance was 87.60%,hydrolysis time was 97.00 s,oxygen permeability was 2.75×10^(-14)cm^(3)·cm/cm^(2)·s·Pa.

关 键 词：玉米秸秆纳米纤维素 玉米秸秆淀粉 玉米秸秆纳米纤维素-淀粉膜 机械性能 透湿系数 

分 类 号：TS206.4[轻工技术与工程—食品科学]