摘要
利用Ｃｅ^（４＋）和羟甲基化炭黑组成的氧化还原引发体系，探讨了丙烯酰胺在炭黑表面的自由基水溶液接枝聚合机理。研究表明：单体浓度、硝酸浓度和铈盐用量直接影响丙烯酰胺在炭黑表面的接枝聚合。ＦＴＩＲ和ＴＥＭ分析证明：改性炭黑表面存在着聚丙烯酰胺。改性炭黑粒子的Ｚｅｔａ电位值与未改性炭黑位子相同。但它与水组成的分散体具有极好的分散稳定性。
Using a redox initiating system,which consists of ceric ions and hydroxymethylgroups on carbon black surface, free radical graft polymerization of acrylamide onto carbonblack surface was investigated.It was found that the polymerization was influenced by theconeentrations of acrylamide,nitric acid and ceric ions.The measurements of zeta electricpotential, FTIR and TEM observations showed the presence of graft polymer on the modi-fied carbon black particles,but the zeta electric potential of the particles was not changed.The surface modified carbon black particles possessed excellent dispersion stability in water.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第10期1641-1644,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
接枝聚合
表面改性
炭黑
丙烯酰胺
Graft polymerization,Surface modification,Carbon black, Acrylamide
