WANG Guo-jian, | JIN Ji-qiong. Chemical modification of multiwalled carbon nanotubes by polyethylene-grafted maleic anhydride. New Carbon Mater., 2012, 27(1): 19-26.
Citation:
WANG Guo-jian, | JIN Ji-qiong. Chemical modification of multiwalled carbon nanotubes by polyethylene-grafted maleic anhydride. New Carbon Mater., 2012, 27(1): 19-26.
WANG Guo-jian, | JIN Ji-qiong. Chemical modification of multiwalled carbon nanotubes by polyethylene-grafted maleic anhydride. New Carbon Mater., 2012, 27(1): 19-26.
Citation:
WANG Guo-jian, | JIN Ji-qiong. Chemical modification of multiwalled carbon nanotubes by polyethylene-grafted maleic anhydride. New Carbon Mater., 2012, 27(1): 19-26.
WANG Guo-jian (1953-), male, Ph. D., Professor, engaged in the teaching and research work of polymer living polymerization, polymer functional materials and coatings. E-mail: wanggj@tongji.edu.cn
Multiwalled carbon nanotubes (MWCNTs) were oxidized by an acid mixture (concentrated H2SO4∶HNO3 =3∶1v/v) to form carboxyl groups, which were then reacted with anhydride ethylene diamine by an amidation reaction to introduce amine end groups that were subsequently grafted to polyethylene/maleic anhydride copolymer (PE-g-MA) to increase the dispersion of the modified MWCNTs in a polyethylene (PE) matrix. The chemical modification of the MWCNTs was verified by FTIR, XPS and Raman spectroscopy. The modified MWCNT/PE composites exhibited an electrical percolation threshold at 0.67 vol% MWCNTs. The volume resistivities of the modified MWCNT/PE composites decreased from 1016 to 105Ω · m with increasing MWCNT content from 0.1 to 1.2 vol%
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