香兰素基非离子表面活性剂的动态表面张力与气/液界面吸附行为

doi:10.13218/j.cnki.csdc.2018.06.001

日用化学工业 ›› 2018, Vol. 48 ›› Issue (6): 303-307.doi: 10.13218/j.cnki.csdc.2018.06.001

• 基础研究 • 下一篇

香兰素基非离子表面活性剂的动态表面张力与气/液界面吸附行为

翟功勋^1,2, 丁凤美^1,2, 邢志奇¹, 周翔^1,2

1.东华大学化学化工与生物工程学院,上海 201620;
2.东华大学生态纺织教育部重点实验室,上海 201620

收稿日期:2018-02-03 发布日期:2019-03-18
通讯作者: 周翔,教授,研究方向:纺织品功能整理和新型纺织化学品,E-mail:xzhou@dhu.edu.cn。
作者简介:翟功勋(1991-),男,硕士研究生,E-mail:zhaigongxun@126.com。
基金资助:
国家高技术研究发展计划(863计划)(2013AA06A307)

Dynamic surface tension and adsorption behavior of vanillin-based nonionic surfactants at gas-liquid interface

ZHAI Gong-xun^1,2, DING Feng-mei^1,2, XING Zhi-qi¹, ZHOU Xiang^1,2

1.Institute of Chemical and Biological Engineering,Donghua University,Shanghai 201620,China;
2.Ecological Textile Key Laboratory of the Ministry of Education,Donghua University,Shanghai 201620,China

Received:2018-02-03 Published:2019-03-18

摘要/Abstract

摘要： 通过最大气泡压力法测定香兰素基聚氧乙烯醚(VAEO)的动态表面张力,利用Word-Tordai方程研究其在气/液界面的吸附行为。结果表明,质量浓度低于临界胶束浓度(cmc)时,VAEO在吸附前期为扩散控制吸附,在吸附后期为混合动力控制吸附;质量浓度大于cmc时,为混合动力控制吸附,胶束不影响吸附行为。VAEO₁₀和VAEO₂₀的扩散系数D的数量级为10^-11 m²/s,比文献报道的壬基酚聚氧乙烯醚(NPEO₉)低一个数量级。

关键词: 香兰素基聚氧乙烯醚, 动态表面张力, 气/液界面吸附, 吸附机理

Abstract: The dynamic surface tension of vanillin-based polyoxyethylene ethers (VAEO) was measured by the maximum bubble pressure method.The adsorption mechanism of surfactants at gas-liquid interface was studied by using Word-Tordai equation.The results show that when the mass concentration of VAEO is below critical micelle concentration (cmc),the adsorption of VAEO obeys the mechanisms of diffusion controlled adsorption and mixed diffusion-kinetic controlled adsorption,respectively,at the early stage and the later stage of adsorption.When the mass concentration is above cmc,the adsorption mechanism is mixed diffusion-kinetic controlled adsorption,where the micelles do not affect the adsorption behavior.The magnitude of diffusion coefficients of VAEO₁₀ and VAEO₂₀ are 10^-11 m²/s,which are lower than the NPEO₉s reported in literature.

Key words: vanillin-based polyoxyethylene ether, dynamic surface tension, gas-liquid interfacial adsorption, adsorption mechanism

中图分类号:

TQ423.2

翟功勋, 丁凤美, 邢志奇, 周翔. 香兰素基非离子表面活性剂的动态表面张力与气/液界面吸附行为[J]. 日用化学工业, 2018, 48(6): 303-307.

ZHAI Gong-xun, DING Feng-mei, XING Zhi-qi, ZHOU Xiang. Dynamic surface tension and adsorption behavior of vanillin-based nonionic surfactants at gas-liquid interface[J]. China Surfactant Detergent & Cosmetics, 2018, 48(6): 303-307.

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香兰素基非离子表面活性剂的动态表面张力与气/液界面吸附行为

Dynamic surface tension and adsorption behavior of vanillin-based nonionic surfactants at gas-liquid interface

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