文献类型：期刊文献

英文题名：Grafting modification of carbon black by trapping macroradicals formed by sonochemical degradation

作者：Li, Qiuying[1,2]; Wu, Guozhang[1]; Ma, Yulu[2]; Wu, Chifei[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Polymer Alloy Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2007

卷号：45

期号：12

起止页码：2411

外文期刊名：CARBON

收录：;EI(收录号：20073810821863);WOS:【SCI-EXPANDED(收录号:WOS:000250947000012)】；

语种：英文

外文关键词：Chemical modification - Degradation - Dynamic light scattering - Free radicals - Functional groups - Grafting (chemical) - Particle size - Polyvinyl alcohols - Size distribution

摘要：Polymers were grafted onto the surface of carbon black (CB) by the trapping of macroradicals formed by sonochemical degradation of a polymer solution. Long chain radicals of poly(vinyl alcohol) (PVA) formed by sonochemical degradation were successfully trapped by CB and grafted onto its surface. Results showed the method to be suitable for all kinds of CB, even for furnace black with few functional groups. The crushing effect of the ultrasonic forces caused the PVA grafted CB to have a much smaller aggregate particle size and narrower particle size distribution than that of the original CB, as indicated by dynamic light scattering. The PVA grafted CB could be well dispersed in water and a polymer matrix. The compatibility between CB and polymer was significantly improved. (c) 2007 Elsevier Ltd. All rights reserved.