Jung Chan-Hee, Kim Dong-Ki, Choi Jae-Hak, Shin Kwanwoo, Nho Young-Chang, Suh Dong-Hack
Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do 580-185, Korea.
J Nanosci Nanotechnol. 2009 Dec;9(12):7126-9. doi: 10.1166/jnn.2009.1614.
Multi-walled carbon nanotubes (MWCNTs) were functionalized by radiation-induced graft polymerization of acrylic acid onto the surface of MWCNTs in order to improve their dispersibility in water. 1H NMR, Raman spectroscopy, TEM, and TGA techniques were used to characterize the resulting functionalized MWCNTs. The grafting degree was dependent on the grafting conditions such as the absorbed dose and the monomer concentration. The experimental results confirmed that poly(acrylic acid) chains were successfully grafted onto the surface of the MWCNTs. The poly(acrylic acid)-grafted MWCNTs showed a much better water dispersibility than the pristine MWCNTs.
为了提高多壁碳纳米管（MWCNTs）在水中的分散性，通过丙烯酸在MWCNTs表面的辐射诱导接枝聚合对其进行功能化处理。采用1H NMR、拉曼光谱、透射电子显微镜（TEM）和热重分析（TGA）技术对所得功能化MWCNTs进行表征。接枝度取决于接枝条件，如吸收剂量和单体浓度。实验结果证实，聚丙烯酸链成功接枝到MWCNTs表面。与原始MWCNTs相比，聚丙烯酸接枝的MWCNTs表现出更好的水分散性。
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