连结基对甜菜碱型双子表面活性剂表面活性和泡沫性能的影响

doi:10.13218/j.cnki.csdc.2018.10.003

日用化学工业 ›› 2018, Vol. 48 ›› Issue (10): 558-563.doi: 10.13218/j.cnki.csdc.2018.10.003

连结基对甜菜碱型双子表面活性剂表面活性和泡沫性能的影响

赖小娟^1,2,刘佩¹,田伟³,汪洁¹,惠艳妮³,贾友亮³

1.陕西科技大学陕西省轻化工助剂重点实验室,陕西西安 710021;
2.陕西农产品加工技术研究院,陕西西安 710021;
3.中国石油长庆油田分公司油气工艺研究院,陕西西安 710021

出版日期:2018-10-20 发布日期:2019-03-18
作者简介:赖小娟(1984-),女,江西人,教授,博士,电话:13649255462,E-mail:3578466@163.com。
基金资助:
陕西省青年科技新星项目(2018KJXX-023);陕西省教育厅重点实验室项目(17JS012);西安市科技计划资助项目(2017068CG)

Effects of the spacer on the surface activity and foaming properties of betaine Gemini surfactants

LAI Xiao-juan^1,2,LIU Pei¹,TIAN Wei³,WANG Jie¹,HUI Yan-ni³,JIA You-liang³

1.Shaanxi Key Laboratory of Chemical Additives for Industry,Shaanxi University of Science and Technology,Xi'an,Shaanxi 710021,China;
2.Shaanxi Research Institute of Agricultural Products Processing Technology,Xi'an,Shaanxi 710021,China;
3.Research Institute of Oil/Gas Technology,Changqing Oilfield Branch Company,PetroChina,Xi'an,Shaanxi 710021,China

Online:2018-10-20 Published:2019-03-18

摘要/Abstract

摘要： 以3-氯-2-羟基丙烷磺酸钠、油酸酰胺丙基二甲基叔胺和溴代烷为原料合成了一系列甜菜碱型双子表面活性剂C_s-BGS(C为连结基中亚甲基,s=2,4,6)。采用FT-IR和¹H NMR对产物进行了结构表征。分别使用吊片法和电导率法测定产物在25 ℃水溶液中的临界胶束浓度(cmc)。结果表明,随着连结基长度的增加,其平衡表面张力(γ_cmc)及cmc增加。C₂-BGS的cmc最低,降低表面张力的效率(pc₂₀)较高,在空气-水界面处有强烈的吸附,并且泡沫性能相对较好。此外,通过pc₂₀、极限占有面积(A_min)、标准吸附自由能(ΔG⁰_ads)和标准胶束化自由能(ΔG⁰_mic)估算C_s-BGS的吸附和胶束化行为。结果表明,C_s-BGS的这些性质受连结基长度影响很大,且促进吸附行为的能力更强。

关键词: 双子表面活性剂, 甜菜碱, 连结基, 表面活性, 泡沫性能

Abstract: A series of betaine-type Gemini surfactants (C_s-BGS where C is the methylene of the spacer,s=2,4,6) were synthesized from sodium 3-chloro-2-hydroxypropanesulfonate,oleamidopropyl dimethylamine and bromoalkane.The chemical structures of the prepared compounds were characterized by FT-IR and ¹H NMR.Their critical micelle concentration (cmc)in the aqueous solution at 25 ℃ was determined by Wilhelmy and electrical conductivity methods.The results show that with the increasing length of the spacer,the values of cmc and equilibrium surface tension (γ_cmc)areincreased.C₂-BGS has exhibited the lowest cmc,nice efficiency in reducing surface tension (pc₂₀),strong adsorption at the air-water interface,and relatively good foaming performance.In addition,the adsorption and micellization behaviors of C_s-BGS were estimated by pc₂₀,minimum surface area per molecule (A_min),standard adsorption free energy (ΔG⁰_ads)and standard micellization free energy (ΔG⁰_mic).The results show that these properties of C_s-BGS are significantly influenced by the length of the spacer,and the ability to promote adsorption is stronger than to promote micellization.

Key words: Gemini surfactant, betaine, spacer group, surface activity, foaming properties

中图分类号:

TQ423

赖小娟,刘佩,田伟,汪洁,惠艳妮,贾友亮. 连结基对甜菜碱型双子表面活性剂表面活性和泡沫性能的影响[J]. 日用化学工业, 2018, 48(10): 558-563.

LAI Xiao-juan,LIU Pei,TIAN Wei,WANG Jie,HUI Yan-ni,JIA You-liang. Effects of the spacer on the surface activity and foaming properties of betaine Gemini surfactants[J]. China Surfactant Detergent & Cosmetics, 2018, 48(10): 558-563.

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连结基对甜菜碱型双子表面活性剂表面活性和泡沫性能的影响

Effects of the spacer on the surface activity and foaming properties of betaine Gemini surfactants

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