羧酸化改性对纳米纤维素/聚苯胺复合材料电性能的影响  

Effects of carboxylation on the electrochemical properties of nano-cellulose/polyaniline composites

作　　者：岳丽娜 孙英娟 申腾飞 李俊飞 周旋 YUE Lina;SUN Yingjuan;SHEN Tengfei;LI Junfei;ZHOU Xuan(School of Environmental Engineering,North China Institute of Science ＆ Technology,Yanjiao,065201,China;School of Safety Engineering,North China Institute of Science ＆ Technology,Yanjiao,065201,China)

机构地区：[1]华北科技学院环境工程学院,北京东燕郊065201 [2]华北科技学院安全工程学院,北京东燕郊065201

出　　处：《华北科技学院学报》2018年第5期78-83,共6页Journal of North China Institute of Science and Technology

基　　金：中央高校基本科研业务费资助项目(3142017099);廊坊市科技局资助项目(2017011041;2017011039)

摘　　要：以具有发达三维网络结构和丰富化学基团的纳米纤维素为基体,对其进行羧酸化改性,进一步在羧酸化纳米纤维上原位合成聚苯胺,制备羧酸化纳米纤维素/聚苯胺复合凝胶材料。研究了不同条件下羧酸化改性对复合材料微观形貌和电学性能的影响。扫描电镜照片表明聚苯胺均匀包覆在纳米纤维素纤维上形成导电网络结构,电化学测试结果表明羧酸化改性可以提高复合材料的离子电导率,达到5. 12×10^(-4)S/cm,同时具有较好的电化学稳定性,在电池、电容器等电子器件上有潜在应用。The nano-cellulose with developed three-dimensional network structure and rich chemical groupswas used as the matrix for carboxylate modification,and then polyaniline was synthesized in situ on the modifiednanofibers to prepare the carboxylated nano-cellulose / polyaniline（CA-NC/ PANI） composite gel materials. Theeffects of carboxylation on the microstructure and electrochemical properties were intensively studied. The morphology of CA-NC/ PANI composites was observed using a FE-SEM,which demonstrated the PANI particleswere polymerized on the network of CA-NC. The results of electrochemical tests showed that carboxylation couldimprove the ionic conductivity of the composite material,reaching 5. 12 × 10-4S / cm and have better electrochemical stability,which would have potential applications in battery,capacitor and other electronic devices.

关 键 词：纳米纤维素 羧酸化 聚苯胺 电化学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]