高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 924.

• 论文 • 上一篇    下一篇

光散射法研究氧化胺胶束与聚苯乙烯磺酸钠的相互作用

冯先华, 柳士忠, 宋慧婷   

  1. 湖北大学化学与材料科学学院, 武汉 430062
  • 收稿日期:2002-03-06 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 冯先华(1964年出生),男,硕士,副教授.主要从事表面活性剂和聚电解质研究.E-mail:feng@hubu.edu.cn E-mail:feng@hubu.edu.cn
  • 基金资助:

    湖北省自然科学基金(批准号:99J066);湖北大学重点项目基金(批准号;A0013)

Studies on Interaction Between N,N-Dimethyldodecylamine Oxide and Sodium Polystyrenesulfonate via Light Scattering Method

FENG Xian-Hua, LIU Shi-Zhong, SONG Hui-Ting   

  1. School of Chemistry and Material Science, Hubei University, Wuhan 430062, China
  • Received:2002-03-06 Online:2003-05-24 Published:2003-05-24

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被引次数

5

摘要： 采用光散射法研究了十二烷基二甲基氧化胺(DDAO)胶束与聚苯乙烯磺酸钠(NaPSS)的相互作用,浊度滴定和激光光散射结果表明,DDAO胶束与NaPSS的相互作用受介质离子强度影响,但与胶束浓度无关,浊度滴定曲线出现一个转折点(βc),而平均流体力学半径Rh对胶束离解度β的关系曲线出现2个转折点,在第一个转折点(β1)时,胶束与NaPSS开始缔合,在第二个转折点(β2)时,胶束与NaPSS的缔合达到饱和,β2相当于浊度滴定曲线的转折βc,β2,和β1不随离子强度而变化,采用β1和βc分别计算胶束与NaPSS发生缔合时的临界表面电荷密度,两者差距约为15％,电泳光散射也证实了β1的存在.

关键词: N, N-二甲基十二烷基氧化胺胶束, 聚苯乙烯磺酸钠, 动态光光散射, 浊度滴定, 电泳光散射

Abstract: The interaction between sodium polystyrenesulfonate(NaPSS) and N,N-dimethyldodecylamine oxide (DDAO) micelles with different concentrations was studied by using turbidimetry, dynamic light scattering, and electrophoretic light scattering. While the interaction was controlled by ionic strength, the micelle concentration shows no effect on the interaction. Dynamic light scattering reveals that the binding of DDAO micelles to NaPSS occurs at a degree of micelle ionization ft prior to critical degree of micelle ionization, βc, which was obtained from turbidimetric titration. The critical micelle surface charge density at a point where micelles associate with polyelectrolyte has a difference of 15% for calculation using β1and βc. Arapid change in the electrophoretic mobility of the system is also observed in the vicinity of ionization degree of micelles corresponding to β1in the dynamic light scattering.

Key words: N, N-Dimethyldodecylamine oxide micelle, Sodium poly (styrene-sulfonate), Dynamic light scattering, Turbidimetry titration, Electrophoretic light scattering

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