Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (4): 690-697.doi: 10.1007/s40242-014-3535-y

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Effects of Various Factors on the Modification of Carbon Nanotubes with Polyvinyl Alcohol in Supercritical CO2 and Their Application in Electrospun Fibers

CHEN Zhimin1, ZHANG Jianan1, GUO Yuanlong1, ZHANG Hao1, CAO Jingjing1, XU Qun1, WANG Shuxia1, WANG Bo1, LIU Zhaotie2   

  1. 1. College of Material Science and Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China;
    2. Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Normal University, Xi'an 710062, P. R. China
  • Online:2014-08-01 Published:2014-03-24
  • Contact: XU Qun E-mail:qunxu@zzu.edu.cn
  • Supported by:

    Supported by the the National Natural Science Foundation of China(Nos.20804040, 20974102, 50955010, 51173170, 21101141, 51003098), the Program for New Century Excellent Talents in Universities(NCET) and the Open Fund of Key Labo- ratory of Applied Surface and Colloid Chemistry(Shaanxi Normal University) of Ministry of Education of China(No.201201).

Abstract:

Supercritical(SC) CO2 anti-solvent induced polymer epitaxy(SAIPE) method was used to help prepare nanohybrid carbon nanotubes(CNTs) wrapped with polyvinyl alcohol(PVA) nanocrystals. With the variation of a series of experimental conditions or peripheral effects, such as PVA concentration, CNTs concentration, and SC CO2 pressure, the optimal experimental variables for PVA-nanocrystals growing on CNTs have been found. The adsorption of polymer on CNTs via multiple weak molecular interactions has been studied by Fourier transform infrared(FTIR) spectroscopy and Raman spectroscopy. The mechanism about the formation of PVA nanocrystals on CNTs can be suggested through the experimental phenomena. These CNTs wrapped with PVA nanocrystals can be directly used as nanofillers to fabricate PVA composite fibers reinforced with CNTs by electrospinning.

Key words: Carbon nanotube, Supercritical CO2, Polyvinyl alcohol, Electrospinning