甲壳素纳米纤维/碳纳米管复合凝胶膜的制备与性能  

Synthesis and Characterization of Chitin Nanofiber/Carbon Nanotube Gel-Films

作　　者：陈楚楚 邓淑文 刘育绮 周沛 赵启蕊 唐雁玲 李大纲 Chuchu Chen;Shuwen Deng;Yuqi Liu;Pei Zhou;Qirui Zhao;Yanling Tang;Dagang Li(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037

出　　处：《高分子材料科学与工程》2018年第8期154-160,共7页Polymer Materials Science & Engineering

基　　金：江苏省自然科学基金资助项目(BK20170925);国家自然科学基金资助项目(31670555);南京林业大学青年科技创新基金(CX2017001);江苏省大学生创新训练项目(SPITP201710298071Y);江苏高校优势学科建设工程(PAPD)

摘　　要：将甲壳素纳米纤维与碳纳米管在水性条件下混合,建立甲壳素纳米纤维均匀分散的碳纳米管混合体系;利用真空抽滤制备甲壳素纳米纤维/碳纳米管复合膜,通过20%氢氧化钠低温处理制备具有连续三维纳米网络结构的复合凝胶膜,并对比凝胶化前后样品微观结构、导电性能及电化学性能等。结果表明,凝胶化处理有助于在凝胶膜内部构建三维纳米导电网络,当甲壳素纳米纤维与碳纳米管的质量比为1∶1时,凝胶膜的导电率和质量比电容较复合膜提高了2倍;2000次循环测试后,凝胶膜的比电容量仍能保持为起始比电容量的92.5%,循环稳定性较好。Chitin nanofiber（ChNF）and carbon nanotube（CNT）were mixed in water system to prepare welldispersed ChNF/CNT solutions.By vacuum filtration,ChNF/CNT film was fabricated.After immersed into20% sodium hydroxide（NaOH）solutions,ChNF/CNT gel-film was obtained showing three-dimensional nanonetwork structures.The microstructure,electronic conductivity and electrochemical properties of the ChNF/CNT film and ChNF/CNT gel-film were characterized,respectively.The results show that the gelation treatments facilitate the construction of three-dimensional nano-networks in the gel-films.When the mass ratio of ChNF and CNT is 1：1,electronic conductivity and capacitance of the ChNF/CNT gel-film are increased by 2 times than that of ChNF/CNT film.Furthermore,after 2000 cycle stability test,the capacity of the ChNF/CNT gel-film is maintained at 92.5% of the original capacity,which exhibits good cyclic stability.

关 键 词：甲壳素纳米纤维 碳纳米管 凝胶化 纳米网络结构 电化学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]