华南理工大学学报(自然科学版) ›› 2019, Vol. 47 ›› Issue (8): 129-135.doi: 10.12141/j.issn.1000-565X.180043

• 材料科学与技术 • 上一篇    下一篇

纳米纤维素/碳纳米管复合薄膜的制备及湿敏性能

朱朋辉1 陈港1†  欧华杰1 蒋晨颖1 车明阳2   

  1. 1． 华南理工大学 制浆造纸工程国家重点实验室∥广东省特种纸与纸基功能材料工程技术研究中心，广东 广州 510640; 2． 山东凯丽特种纸股份有限公司，山东 荣成 264300
  • 收稿日期:2019-01-23 修回日期:2019-05-06 出版日期:2019-08-25 发布日期:2019-08-01
  • 通信作者: 陈港(1967-)，男，博士，教授，博士生导师，主要从事造纸技术与特种纸研究． E-mail:papercg@ scut.edu.cn
  • 作者简介:朱朋辉(1995-)，男，博士，主要从事纳米纤维素复合材料研究． E-mail:zhupenghui0824@163． com
  • 基金资助:
    国家重点研发计划项目 (2018YFC1902102);国家工业和信息化部重点行业绿色制造系统集成项目 (Z135060009002);华南理工大学制浆造纸工程国家重点实验室团队项目(2017ZD01)

Preparation and Humidity Sensitive Performance of Nanocellulose/Carbon Nanotube Composite Films

ZHU Penghui1 CHEN Gang1 OU Huajie1 JIANG Chenying1 CHE Mingyang2     

  1.  1． State Key Laboratory of Pulp and Paper Engineering∥Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials，South China University of Technology，Guangzhou 510640， Guangdong，China; 2． Shandong Kaili Specialty Paper Co． ，Ltd． ，Rongcheng 264300，Shandong，China
  • Received:2019-01-23 Revised:2019-05-06 Online:2019-08-25 Published:2019-08-01
  • Contact: 陈港(1967-)，男，博士，教授，博士生导师，主要从事造纸技术与特种纸研究． E-mail:papercg@ scut.edu.cn
  • About author:朱朋辉(1995-)，男，博士，主要从事纳米纤维素复合材料研究． E-mail:zhupenghui0824@163． com
  • Supported by:
    Supported by the National Key Research and Development Program(2018YFC1902102)，Green Manufacturing System Integration Project for Key Industries of the Ministry of Industry and Information Technology(Z135060009002) and the Team Project of the State Key Laboratory of Pulp and Paper Engineering at South China University of Technology(2017ZD01)

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摘要： 首先采用 TEMPO 氧化法制备纳米纤维素(NFC)，并将 NFC 作为碳纳米管(CNT) 的分散剂，通过超声和离心处理制备出稳定分散的 NFC/CNT 分散液;然后通过朗伯 － 比 尔定律测定离心处理后的 NFC/CNT 分散液的质量浓度，并利用原子力显微镜和 Zeta 电 位对 NFC/CNT 的分散效果做进一步表征;最后将制得的 NFC/CNT 分散液，通过真空抽 滤法制备出柔性 NFC/CNT 复合薄膜． 扫描电镜分析表明，所制备的薄膜具有多层有序结 构，并且 NFC 与 CNT 之间相互交织，形成网络结构． 拉曼光谱分析进一步表明，薄膜中的 NFC 与 CNT 之间存在氢键作用． NFC/CNT 复合薄膜的湿敏性能测试结果表明:不同含量 的 CNT 对复合薄膜的湿敏性能具有重要的影响，当 CNT 含量为 5% 时，复合薄膜在 95% 相对湿度条件下的灵敏度高达64%，线性度拟合系数为0．982，表现出优异的湿敏性能．

关键词: 纳米纤维素, 碳纳米管, 复合薄膜, 湿敏性能

Abstract: Nanocellulose (NFC) was firstly prepared by means of TEMPO oxidation method． NFC was used as a dispersant for dispersing carbon nanotubes (CNT) in water，and a stable and well-dispersed NFC/CNT suspension was prepared through ultrasonication and centrifugation treatment． Then the concentration of the centrifugally trea- ted NFC/CNT dispersion was measured by Lambert-Beer's law，and the dispersion effect of NFC/CNT was further characterized by atomic force microscope and Zeta potential． Finally，flexible NFC/CNT composite films were pre- pared with the obtained NFC/CNT dispersion by vacuum filtration method． Scanning electron microscopy analysis showed that the prepared films had a multi-layered ordered structure，and NFC and CNT were intertwined to form a network structure． Raman spectroscopy further indicates that hydrogen bonding exists between NFC and CNT in the composite film． The results of the humidity sensitive performance of the obtained NFC/CNT composite films show that CNT content has an important effect on the humidity sensitivity of the films． When the CNT content is 5%，the sensitivity value reaches 64% under 95% relative humidity，and the linearity fitting coefficient is 0. 982，indicating excellent humidity sensitive performance．

Key words: nanocellulose, carbon nanotube, composite film, humidity sensitive performance

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