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《Acta Materiae Compositae Sinica》 2018-06
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Preparation and mechanical properties of highly transparent carboxymethyl cellulose/cellulose fiber composite films

CHEN Gang;HU Wen;ZHU Penghui;LIU Yu;PENG Chao;FANG Zhiqiang;State Key Lab of Pulp and Paper Engineering,South China University of Technology;Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province,Qilu University of Technology;  
A highly transparent carboxymethyl cellulose(CMC)/cellulose fiber composite film based on cellulose fibers and CMC was rapidly prepared by a combination of paper making method and impregnation,aiming to replace current rigid,non-biodegradable substrates for electronic devices.The optical transmittance of composite films as function of the mass ratio of CMC to northern wood fibers and the influence of the CMC molecular weight on the mechanical properties were investigated.The effect of fiber species(northern wood fiber,eucalyptus wood fiber,manila hemp fiber,bagasse fiber)on the mechanical properties of highly transparent CMC/cellulose fiber composite films was also studied.The results show that the CMC/northern wood fiber composite film exhibits a light transmittance of 90%,a tensile strength of 111 MPa,and a folding endurance up to 2 526 times when the mass ratio of CMC(molecular weight:700 000)to softwood fibers is 7∶3.This biodegradable,mechanically flexible,strong,and highly transparent CMC/cellulose fiber composite film shows the potential to be used in the fabrication of next generation flexible and green electronic devices as a substrate to maintain the sustainability of human's society.
【Fund】: 广东省自然科学基金-博士启动(2017A030310635);; 中央高校基本科研业务费专项资金(2015ZM156);; 制浆造纸工程国家重点实验室项目(201709;2016YP01;2017ZD01);; 制浆造纸科学与技术教育部/山东省重点实验室开放基金(KF201619);; 2017年度华南理工大学学生研究计划(105612017S478)
【CateGory Index】: TB383.2
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