Synthesis of hydrophobic and hydrophilic graphitic carbon nanofiber polymer brushes

被引:37
作者
Li, L [1 ]
Lukehart, CM [1 ]
机构
[1] Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA
关键词
D O I
10.1021/cm051720d
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Herringbone graphitic carbon nanofiber (GCNF)-polymer brushes are prepared by atom transfer radical polymerization (ATRP) using the "grafted-from" synthesis strategy. Polymerization of acrylate esters occurs at surface sites covalently derivatized with ATRP initiators to form GCNF-poly(n-butyl acrylate), GCNF-poly(isobutyl methacrylate), and GCNF-poly(tert-butyl acrylate) polymer brushes. Acid hydrolysis of the GCNF-poly(tert-butyl acrylate) polymer brush gives a GCNF-poly(acrylic acid) polymer brush. Solution dispersibilities of GCNF-polymer brushes are controlled by the solubility properties of the polymer brush component, with GCNF-poly(acrylate ester) brushes being hydrophobic, whereas the GCNF-poly(acrylic acid) brush is hydrophilic. Because of the unique atomic structure of GCNFs, a high surface density (ca. 3 chains/10 nm(2) of GCNF surface) of polymer brush functionalization is realized.
引用
收藏
页码:94 / 99
页数:6
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