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碳酸钠对烷基苯磺酸钠/脂肪醇聚氧乙烯醚/H2O体系相行为和流变性的影响
Effect of Na2CO3 on the Phase and Rheological Behaviors of LAS/Neodol25-9 /H2O
【摘要】 研究了Na2 CO3 对烷基苯磺酸钠 /脂肪醇聚氧乙烯醚 /H2 O (LAS/Neodol2 5-9/H2 O)体系相行为的影响 ,确认了L1+La与L1+La相界面的存在 ,并得到了不同Na2 CO3 浓度下体系的相图。结果表明 :碳酸钠的加入使L1相和La相缩小 ,H缩小至消失 ,层状分散相扩大 ,但其分散稳定性下降。LAS/Neodol2 5-9混合体系的稳定性明显高于纯的LAS或Neodol2 5-9体系
【Abstract】 This paper studies effect of Na 2CO 3 on the phase behavior and rheology of LAS/Neodol 25-9 /H 2O system,and confirms the existence of the boundary of La+L 1 and la+L 1.The phase diagrams of LAS/Neodol 25-9 /H 2O system in the presence of differential Na 2CO 3 concentrations have been obtained.The results show that:addition of Na 2CO 3 causes shrinkage of phase region of L 1 and La,and disappearance of H phases,and increase of Lamella dispersion phase;stability of dispersion is decreased;the stability of the lamella dispersion of LAS/Neodol 25-9 mixture system is larger than LAS or Neodol 25-9 single one.
【Key words】 surfactant; sodium alkyl benzyl sulfonate; fatty alcohol polyoxyethylene ether; liquid crystal; rheology of solution.;
- 【文献出处】 日用化学工业 ,China Surfactant Detergent & Cosmetics , 编辑部邮箱 ,2001年06期
- 【分类号】O647.2
- 【被引频次】4
- 【下载频次】133