TX-100在离子液体EAN/PEG-200混合溶液中的聚集行为研究

doi:10.3969/j.issn.1001-1803.2020.05.004

日用化学工业 ›› 2020, Vol. 50 ›› Issue (5): 304-308.doi: 10.3969/j.issn.1001-1803.2020.05.004

TX-100在离子液体EAN/PEG-200混合溶液中的聚集行为研究

李军¹,王杰¹,李晖¹,姚陈忠¹,谷莹秋²(),史利娟³

1. 运城学院应用化学系,山西运城 044000
2. 江苏师范大学化学与材料科学学院,江苏徐州 221116
3. 太原理工大学煤科学与技术省部共建国家重点实验室培育基地,山西太原 030024

收稿日期:2019-09-12 修回日期:2020-04-08 出版日期:2020-05-22 发布日期:2020-05-21
通讯作者: 谷莹秋
作者简介:李军（1973-）,男,山西人,副教授,博士,电话：（0359）2513059,E-mail： lijunycu0226@126.com。
基金资助:
国家自然科学基金资助项目(U1810110);山西省面上自然基金项目(201901D111082);山西省高等院校创新项目(201805D211037);江苏省自然科学基金青年项目(BK20170232);运城学院科技项目(XK-2019066);煤科学与技术省部共建国家重点实验室培育基地开放课题资助项目(MKX201904);塑料卫生与安全质量评价技术北京市重点实验室开放课题(BS201709)

Aggregation behavior of TX-100 in the EAN/PEG-200 mixed solution

LI Jun¹,WANG Jie¹,LI Hui¹,YAO Chen-zhong¹,GU Ying-qiu²(),SHI Li-juan³

1. Department of Applied Chemistry, Yuncheng University, Yuncheng, Shanxi 044000, China
2. School of Chemistry & MaterialsScience, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
3. Key Laboratory of Coal Science and Technology,Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China

Received:2019-09-12 Revised:2020-04-08 Online:2020-05-22 Published:2020-05-21
Contact: Ying-qiu GU

摘要/Abstract

摘要：

通过表面张力、核磁等表征手段,研究了非离子表面活性剂TX-100在离子液体EAN纯溶剂以及EAN/聚乙二醇PEG-200混合溶液中的聚集行为。结果表明,TX-100在两种溶剂中均形成胶束;通过表征分析发现,TX-100在混合体系的表面张力和临界胶束浓度随着混合溶剂中PEG-200含量增加而增加,所形成的胶粒尺寸也增大;当混合溶剂中PEG-200含量固定时,随着温度升高,TX-100在两种体系中的cmc都增加;理论计算表明低温时是焓驱动形成胶束,高温时是熵驱动形成胶束。

关键词: 辛基苯基聚氧乙烯醚, 聚乙二醇, 离子液体硝酸乙基胺, 聚集行为

Abstract:

The aggregation behavior of a nonionic surfactant, TX-100, in pure EAN and mixed solution of EAN/PEG-200 was investigated by surface tension measurement and NMR. The results indicated that spherical micelles were formed in both systems. With the increase of PEG-200 content in the mixed solvent, the surface tension, critical micelle concentration （cmc） and the size of the formed particles were increased. The cmc of TX-100 in the two systems increased with the increase of temperature. Theoretical calculations showed that the micellization of TX-100 in solution was enthalpy-driven at low temperature, and was entropy-driven at high temperature.

Key words: TX-100, polyethylene glycol, EAN, aggregation behavior

中图分类号:

TQ423

李军,王杰,李晖,姚陈忠,谷莹秋,史利娟. TX-100在离子液体EAN/PEG-200混合溶液中的聚集行为研究[J]. 日用化学工业, 2020, 50(5): 304-308.

LI Jun,WANG Jie,LI Hui,YAO Chen-zhong,GU Ying-qiu,SHI Li-juan. Aggregation behavior of TX-100 in the EAN/PEG-200 mixed solution[J]. China Surfactant Detergent & Cosmetics, 2020, 50(5): 304-308.

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w（PEG-200）/%	cmc/%	$\gamma$cmc/	Γmax/ （μmol·m^-2）	Amin/ （nm²）
w（PEG-200）/%	cmc/%	（mN·m^-1）	Γmax/ （μmol·m^-2）	Amin/ （nm²）
0	4.5	41.8	3.66	0.45
10	6.1	43.9	2.61	0.636
20	8.6	46.3	1.83	0.907
30	12.1	48.0
40	16.5	50.1

溶剂	θ/℃	cmc/%	ΔG_m⁰/（kJ·mol^-1）	ΔH_m⁰/（kJ·mol^-1）	-TΔS_m⁰/（kJ·mol^-1）
EAN	25	4.5	-11.94	-21.18	9.24
	35	5.9	-11.62	-14.85	3.23
	45	7.5	-11.32	-10.21	-1.11
EAN/PEG-200	25	6.1	-11.17	-23.62	12.45
	35	7.4	-10.88	-15.99	5.11
	45	8.5	-10.83	-8.84	-1.99

TX-100在离子液体EAN/PEG-200混合溶液中的聚集行为研究

Aggregation behavior of TX-100 in the EAN/PEG-200 mixed solution

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