化学学报 ›› 1997, Vol. 55 ›› Issue (12): 1179-1184. 上一篇    下一篇

研究论文

PVP与C~1~4BE之间的相互作用

徐桂英;隋卫平;李干佐   

  1. 山东大学;胶体与界面化学国家教委开放实验室;济南大学化学系
  • 出版日期:1997-12-15 发布日期:1997-12-15

The interaction between PVP and C~1~4BE

XU GUIYING;SUI WEIPING;LI GANZUO   

  • Online:1997-12-15 Published:1997-12-15

通过表面张力和胶束聚集数的测定,研究了聚乙烯吡咯烷酮(PVP)与两性表面活性剂十四烷基甜菜碱(C~1~4BE)之间的相互作用。结果表明,PVP与C~1~4BE可通过其分子间的疏水作用和极性基团间的静电力形成PVP大分子/表面活性剂聚集体。因此,混合溶液的表面张力-浓度曲线表现出两个转折点,C~1~4BE的胶束聚集数随PVP浓度增大而减小。

关键词: 胶束, 表面活性, 聚乙烯基吡咯烷酮, 表面张力, 甜菜碱, 两性离子表面活性剂, 相互作用, 聚集体, 十四烷基, 聚集数

The interaction between polyvinylpyrrolidone (PVP) and zwitterionic surfactant tetradecylbetaine (C~1~4BE) has been investigated by means of surface tension and time resolved fluorescence measurements. It is shown that the addition of PVP results in a decrease of the aggregation number of C~1~4BE and an appearance of two transition points in the surface tension- concentration curve. The results indicate that PVP associates with C~1~4BE to form aggregate by the hydrophobic effect between hydrophobic groups and electrostatic force between polar head groups of C~1~4BE and PVP.

Key words: MICELLE, SURFACE ACTIVITY, POLYVINYLPYRROLIDONE, SURFACE TENSION, BETAINE, AMPHOTERIC SURFACTANTS, INTERACTIONS, AGGREGALES, TETRADECYL, AGGREGATION NUMBER

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