高等学校化学学报

高等学校化学学报

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聚氧乙烯醚类表面活性剂表面扩张粘弹性质研究

张春荣1,2, 宋新旺3, 曹绪龙3, 罗澜1, 张路1, 李振泉3, 赵濉1, 俞稼镛1   

    1. 中国科学院理化技术研究所, 北京 100080;
    2. 中国科学院研究生院, 北京 100039;
    3. 中国石化总公司胜利油田分公司地质科学研究院, 东营 257015
  • 收稿日期:2006-06-22 修回日期:1900-01-01 出版日期:2007-04-10 发布日期:2007-04-10
  • 通讯作者: 赵濉

Study of Surface Dilational Elasticity and Viscosity of Nonylphenol Polyoxyethylene Ethers

ZHANG Chun-Rong1,2, SONG Xin-Wang3, CAO Xu-Long3, LUO Lan1, ZHANG Lu1, LI Zhen-Quan3, ZHAO Sui1*, YU Jia-Yong1   

    1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China;
    3. Geological Research Institute of Shengli Oilfield Co．Ltd., SINOPEC, Dongying 257015, China
  • Received:2006-06-22 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
  • Contact: ZHAO Sui

PDF (PC)

被引次数

15

摘要： 研究了非离子表面活性剂壬基苯酚聚氧乙烯醚NP-8, NP-10和NP-12水溶液的表面扩张粘弹性质, 考察了氧乙烯数的变化对表面吸附膜特性的影响. 研究结果表明, 三种表面活性剂的扩张弹性随着工作频率的增大而增大, 扩张粘性则在0.1~0.01 Hz范围内通过不明显的极大值; 扩张弹性和粘性随着浓度的增加在同一浓度处通过一个极大值; 氧乙烯数从8增加到12, 表面扩张弹性、粘性和相角的变化不大. 从发生在表面上和表面附近的微观弛豫过程的角度对实验结果进行了讨论.

关键词: 聚氧乙烯醚, 表面, 扩张弹性, 扩张粘性, 相角, 界面张力弛豫

Abstract: The surface dilational viscoelasticity properties of nonylphenol polyoxyethylene ethers solutions, NP-8, NP-10 and NP-12, were investigated by Langmuir trough method. The influences of concentration and the number of polyoxyethylene groups on the surface dilational properties were expounded. It is shown that the surface dilational elasticity increased with the increase of frequency, while dilational viscosity passed through an indistinctive maximum. Surface dilational elasticity and viscosity passed through the distinctive maximum with the increase of bulk concentration and changed little with the increase of the number of polyoxyethylene groups from 8 to 12. The mechanisms responsible for the experimental results were discussed based on the relaxation processes existed in or near the surface. It showed that the arrangement of polyoxyethylene chain at the surface played an important role in film properties.

Key words: Polyoxyethylene, Surface, Dilational elasticity, Dilational viscosity, Phase angle, Interfacial tension relaxation

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