摘要
研究了由聚合物表面接枝改性炭黑和氯化钾水溶液组成的分散体系中炭黑粒子表面ｚｅｔａ电位的变化。探讨了阴离子表面活性剂十二烷基苯磺酸钠和阳离子表面活性剂十二烷基苄基二甲基氯化胺在普通炭黑和聚合物接枝改性炭黑表面的吸附行为。研究表明，聚丙烯酸接枝改性炭黑粒子表面的ｚｅｔａ电位远低于未接枝改性的炭黑粒子；但由聚丙烯酰胺接枝改性炭黑粒子的表面ｚｅｔａ电位值不发生明显的变化。与普通炭黑比较，表面活性剂在改性炭黑表面的平衡吸附值发生较大的变化，从而使该类粒子的表面ｚｅｔａ电位值发生变化。
The surface zeta electric potential of carbon black particles modified with surface grafting polymer and KCl aqueous solution system was investigated. Adsorbability of sodium laurylbenzene sulfonate or N laurylbenzyldimethyl chloride molecules on normal carbon black surface and graft polymer modified carbon black surface was explored. The experimental results show that the zeta electric potential of carbon black particles modified with surface graft polyacrylic acid is lower than one of unmodified carbon black, but modification of surface grafting of acrylamide onto carbon black do not change zeta electric potential of unmodified carbon black particles. Because of surface modification of graft polymer, balance adsorbance of surfactant on carbon black surface and zeta electric potential are changed.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1997年第5期104-108,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
炭黑
吸附
高聚物
改性
接枝共聚
carbon black, zeta electric potential, adsorbtion
