Modification of hydroxylated multi-walled carbon nanotubes with a block copolymer

被引：0
|
作者：
Wang Guo-jian [1 ,2 ]
Wang Ke-wei [2 ]
Qui Jun [2 ]
机构：
[1] Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 200092, Peoples R China
[2] Tongji Univ, Sch Mat Sci & Engn, Shanghai 200092, Peoples R China
来源：
NEW CARBON MATERIALS | 2010年 / 25卷 / 06期
关键词：
Multi-walled carbon nanotubes; Chemical modification; Block copolymer; Atom transfer radical polymerization; Dispersibility; FUNCTIONALIZATION; POLYMERIZATION; PURIFICATION; WATER;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel approach was used to improve the dispersibility of multi-walled carbon nanotubes (MWCNTs) in a solvent. Vinyl-functionalized MWCNTs were prepared by the esterification of acrylic acid with hydroxylated MWCNTs. The block copolymer, polystyrene-b-hydroxyethyl methacrylate was synthesized by means of atom transfer radical polymerization. Then the block copolymer was attached to the surface of the MWCNTs through an addition reaction. The products were characterized by FTIR, TGA and TEM. Results indicated that the copolymer was attached to the surface of the MWCNTs by covalent bonds with a content of 42.9%, i. e. every 277 carbon atoms were grafted with a block copolymer chain. The resulting products had a good dispersibility in ethanol.
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收藏
页码：426 / 430
页数：5
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