CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, People's Republic of China.
Langmuir. 2010 May 18;26(10):7529-34. doi: 10.1021/la904337z.
Homogeneous dispersion and functionalization of pristine multiwalled carbon nanotubes (MWNTs) in various organic solvents was achieved by a simple ultrasonic process in the presence of an azide copolymer, poly(4-azidophenyl methacrylate-co-methyl acrylate)(P(APM-co-MA)). The copolymes were noncovalently attached to the surface of the MWNTs via pi-pi interactions to form MWNT-P(APM-co-MA) composites. The composites were characterized by transmission electron microscopy, thermogravimetric analysis, Raman spectra and UV-vis spectra. The solution dispersion of the MWNT-P(APM-co-MA) composites were used to prepare superhydrophobic cotton fabric by a facile dip-coating approach. MWNTs were covalently attached to the surface of the cotton fabric through the chemical reactions between the azide groups of P(APM-co-MA) with both MWNTs and cotton fibers. The reactions are based on UV-activated nitrene chemistry. Owing to the nanoscale roughness introduced by the attachment of MWNTs, the cotton fabric surface was transformed from hydrophilic to superhydrophobic with an apparent water contact angle of 154 degrees . Since MWNTs were covalently attached on the surface of the cotton fabric, the superhydrophobicity possesses high stability and chemical durability.
在叠氮共聚物聚（4-叠氮基苯甲基丙烯酸酯-共-甲基丙烯酸甲酯）（P（APM-co-MA））的存在下，通过简单的超声处理，实现了原始多壁碳纳米管（MWNTs）在各种有机溶剂中的均匀分散和功能化。共聚物通过π-π相互作用非共价键合到 MWNTs 表面上，形成 MWNT-P（APM-co-MA）复合材料。通过透射电子显微镜、热重分析、拉曼光谱和紫外可见光谱对复合材料进行了表征。通过简单的浸涂方法，将 MWNT-P（APM-co-MA）复合材料的溶液分散体用于制备超疏水棉织物。通过 P（APM-co-MA）中的叠氮基团与 MWNTs 和棉纤维之间的化学反应，MWNTs 被共价键合到棉织物的表面上。这些反应基于 UV 激活的氮宾化学。由于 MWNTs 的附着引入了纳米级粗糙度，棉织物表面从亲水转变为超疏水，水接触角明显为 154 度。由于 MWNTs 共价键合在棉织物表面上，因此超疏水性具有高稳定性和化学耐久性。
