Synthesis of PMMA-co-PMAA Copolymer Brush on Multi-Wall Carbon Nanotubes

• 作者: Pavel Riha Petr Saha Petr Slobodian Petr Svoboda Roman Boruta
• 来源期刊: 表面工程材料与先进技术期刊(英文)
• 学科: 化学
• 关键词: Carbon Nanotubes FUNCTIONALIZATION PMMA PMAA Polymer BRUSH
• 年，卷（期）: 2012,（3）
• 页码范围: 221-226
• 页数: 6页
• 分类号: O6

摘要

Poly(methyl methacrylate)/poly(methacrylamide) copolymer (PMMA-co-PMAA) was synthesized by a free radical copolymerization of MMA and MAA monomers in methylethyl ketone using AIBN as radical initiator. Multi-wall carbon nanotubes (MWCNT) were oxidized in KMnO4 acidic suspension. Carboxyl groups on the surface oxidized MWCNT were reacted with primary amide group of PMMA-co-PMAA copolymer in MEK solution under ultrasound to form polymer brush on the surface of MWCNT. With the help of TG analyses the amount of covalently grafted PMMA-co-PMAA copolymer onto MWCNT surface was determined as ?47 wt%. TEM analyses identified thin co-polymer layer adhered onto MWCNT surface with average thickness ?5 nm.