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author:

郑玉婴 (郑玉婴.) [1] (Scholars:郑玉婴) | 赵剑曦 (赵剑曦.) [2] (Scholars:赵剑曦) | 郑欧 (郑欧.) [3] (Scholars:郑欧) | 游毅 (游毅.) [4] (Scholars:游毅) | 邱羽 (邱羽.) [5]

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PKU CSCD

Abstract:

测定了Gemini阳离子表面活性剂Cm-s-Cm@2Br(m=8,10,12;s=2,6及m=12;s=3,4)水溶液的电导,从电导(к)~表面活性剂浓度(c)曲线的转折点可求得临界胶团浓度cmc.实验发现,Gemini阳离子表面活性剂的胶团化倾向明显强于其"单体分子”(即单离子头基单烷烃链表面活性剂).根据质量作用模型计算了胶团化过程的吉布氏能、焓和熵的改变,结果表明Gemini表面活性剂聚集机理和其对应的"单体分子”类似,主要来自熵驱动.所有的焓/熵补偿图均呈现良好的线性关系,补偿直线在y轴的截距随s减小而变小,这意味着具有较小s的Gemini表面活性剂倾向于生成稳定的胶团.

Keyword:

Gemini表面活性剂 焓/熵补偿 熵驱动 胶团化

Community:

  • [ 1 ] [郑玉婴]福州大学
  • [ 2 ] [赵剑曦]福州大学
  • [ 3 ] [郑欧]福州大学
  • [ 4 ] [游毅]福州大学
  • [ 5 ] [邱羽]福州大学

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Source :

化学学报

ISSN: 0567-7351

CN: 31-1320/O6

Year: 2001

Issue: 5

Volume: 59

Page: 690-695

0 . 5 3

JCR@2001

2 . 5 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

JCR Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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