A Simple Polymerizable Polysoap Greatly Enhances the Grafting Efficiency of the "Grafting-to" Functionalization of Multiwalled Carbon Nanotubes

作者：Peng, Mao^*; Liao, Zhangjie; Zhu, Zhongming; Guo, Honglei

来源：Macromolecules, 2010, 43(23): 9635-9644.

DOI：10.1021/ma101953h

• TRANSFER RADICAL POLYMERIZATION
• CROSS-LINKING
• MECHANICAL-PROPERTIES
• GOLD NANOPARTICLES
• SINGLE
• SURFACE
• WATER
• DISPERSION
• COMPOSITES
• BRUSHES

A simple polymerizable polysoap was synthesized for the functionalization of multiwalled carbon nanotubes (MWNTs) by "grafting to" method, which greatly enhances the grafting efficiency (i.e., the ratio between the quantity of grafted polymer and the total polymerized monomer). Self-assembly of MWNTs with the polysoaps in a 1,4-dioxane/water mixture results in the formation of micellized MWNTs; then, by a single step of polymerization of the polysoaps or copolymerization of the polysoaps with methyl methacrylate (M MA), the polymer layer of the micellized MWNTs is permanently cross-linked and covalently bonded to the nanotube surface. For the poly(polysoap-co-MMA) modified MWNTs, the grafting efficiency can he as high as 65.7%. The functionalized MWNTs are robust, readily redispersible in water and some organic solvents, and increase the dynamic mechanical properties of epoxy resin more effectively than oxidized or noncovalently modified MWNTs.

• 出版日期2010-12-14
• 单位浙江大学