Journal of South China University of Technology(Natural Science Edition) ›› 2019, Vol. 47 ›› Issue (8): 129-135.doi: 10.12141/j.issn.1000-565X.180043

• Materials Science & Technology • Previous Articles     Next Articles

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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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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