碳酸钠对烷基苯磺酸钠/脂肪醇聚氧乙烯醚/H_2O体系相行为和流变性的影响  

Effect of Na_2CO_3 on the Phase and Rheological Behaviors of LAS/Neodol_(25-9) /H_2O

作　　者：王红霞[1] 陆用海[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001

出　　处：《日用化学工业》2001年第6期1-4,共4页China Surfactant Detergent & Cosmetics

基　　金：山西省自然科学基金 (981 0 2 2 )

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Neodol2This 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.

关 键 词：表面活性剂 烷基苯磺酸钠 醇醚 液晶 溶液流变性 相行为 碳酸钠 脂肪醇聚氧乙烯醚 

分 类 号：O647.2[理学—物理化学]