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

作　　者：CHEN Zhimin ZHANG Jianan GUO Yuanlong ZHANG Hao CAO Jingjing XU Qun WANG Shuxia WANG Bo LIU Zhaotie 

机构地区：[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

出　　处：《Chemical Research in Chinese Universities》2014年第4期690-697,共8页高等学校化学研究（英文版）

基　　金：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 Laboratory of Applied Surface and Colloid Chemistry（Shaanxi Normal University） of Ministry of Education of China（No.201201）.

摘　　要：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.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.

关 键 词：Carbon nanotube Supercritical CO2 Polyvinyl alcohol ELECTROSPINNING 

分 类 号：TQ028.32[化学工程] TB383[一般工业技术—材料科学与工程]