摘要
构建阳离子淀粉(CS)和纳米纤维素(NC)的CS/NC复合体系,探索其在食品软包材料中的应用价值。本研究选取打浆度24°SR针叶木浆和打浆度36°SR阔叶木浆作为基纸原料,系统研究了浆内/表面施胶CS/NC复合体系对纸张性能的影响。将CS/NC复合体系用于基纸的浆内施胶,当CS添加量为1.0%(相对于绝干浆,以下同)、纤维素纳米纤丝(J-CNF)添加量0.6%时,纸张的抗张指数和撕裂指数分别达68.6 N·m/g和7.79 mN·m^(2)/g,相较于基纸分别提高14.1%和18.8%。将CS/NC复合体系用于基纸的表面施胶,胶料固含量为6.5%(J-CNC∶CS=1∶9,质量比)时,施胶纸张透气度下降值达99.4%;单面施胶量为6 g/m^(2)时,施胶纸张防油等级可达12级。
Cationic starch(CS)and nanocellulose(NC)were used to construct an CS/NC composite system to explore its application value in food soft packaging materials.In this study,softwood pulp and hardwood pulp with beating degrees of 24 and 36°SR,respectively,were selected as base paper raw materials.A systematic study was conducted on the effects of intra-slurry/surface sizing the CS/NC composite sys‐tem on the properties of paper.When the CS/NC composite system was applied in intra-slurry sizing,CS was added at a mass fraction of 1.0%(relative to the oven dry fiber weight,hereafter)with cellulose nanofibers(J-CNF)of 0.6%,the tensile index and tearing index of the handmade sheet reached 68.6 N·m/g and 7.79 mN·m^(2)/g,respectively,representing increases of 14.1%and 18.8%compared to the base paper.When the CS/NC composite system was applied in surface sizing,the air permeability of sized paper decreased by 99.4%at ce‐ment solid content 6.5%,with a mass ratio cellulose nanocrystal(J-CNC)to CS of 1∶9.Additionally,when the amount of single-sided siz‐ing was 6 g/m²,the oil-proof grade of sized paper achieved grade 12.
作者
奎明红
文辉
马洪生
王斌
KUI Minghong;WEN Hui;MA Hongsheng;WANG Bin(Guangdong Guanhao High-tech Co.,Ltd.,Zhanjiang,Guangdong Province,524072;Guangdong Guanhow New Materials R&D Co.,Ltd.,Guangzhou,Guangdong Province,511400;Zhuhai Hongta Renheng Packaging Co.,Ltd.,Zhuhai,Guangdong Province,519000;School of Light Industry and Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640)
出处
《中国造纸》
北大核心
2024年第12期52-61,共10页
China Pulp & Paper
关键词
纳米纤维素
阳离子淀粉
食品包装纸
机械性能
阻隔性能
nanocellulose
cationic starch
food packaging paper
mechanical properties
barrier properties
