硅基季铵盐改性纳米SiO2稳定的Pickering乳液性能研究

doi:10.3969/j.issn.1001-1803.2020.03.008

日用化学工业 ›› 2020, Vol. 50 ›› Issue (3): 182-187.doi: 10.3969/j.issn.1001-1803.2020.03.008

硅基季铵盐改性纳米SiO₂稳定的Pickering乳液性能研究

薛伟^1,²,武江红³,杜志平^1,⁴

^1. 山西大学化学化工学院,山西太原 030006
^2. 中国日用化学研究院有限公司,山西太原 030001
^3. 山西能源学院,山西晋中 030600
^4. 山西大学资源与环境工程研究所,山西太原 030006

收稿日期:2019-12-26 修回日期:2020-03-04 出版日期:2020-03-22 发布日期:2020-04-02
作者简介:薛伟（1987-）,男,山西人,工程师,博士研究生,电话：15903403942,E-mail： 343112146@qq.com。

Performance of Pickering emulsions stabilized by SiO₂ nanoparticles modified with silicon-based quaternary ammonium salts

Wei XUE^1,²,Jiang-hong WU³,Zhi-ping DU^1,⁴

^1. School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, China
^2. China Research Institute of Daily Chemical Co. Ltd., Taiyuan, Shanxi 030001, China
^3. Shanxi Institute of Energy, Jinzhong, Shanxi 030600, China
^4. Institute of Resources and Environment Engineering, Shanxi University, Taiyuan, Shanxi 030006, China

Received:2019-12-26 Revised:2020-03-04 Online:2020-03-22 Published:2020-04-02

摘要/Abstract

摘要：

以二甲基十八烷基[3-（三甲氧基硅基）丙基]氯化铵（C18QAS）为改性试剂对亲水性纳米SiO₂改性,得到两亲性的SiO₂-C18QAS。该粒子表现出良好的界面活性,可稳定多个油/水双相体系形成稳定的Pickering乳液。随着SiO₂-C18QAS用量的增加,其稳定的乳液液滴直径先减小后趋于恒定。然而,随着SiO₂-C18QAS功能化程度的提升,其稳定的乳液液滴尺寸先下降后逐渐增加,并在C18QAS用量为0.3 mmol时达到了最小值。此外,水相酸碱性和油/水体积比可诱导乳液相反转现象的发生。该乳液稳定性好,静置一个月后未见明显变化。SiO₂-C18QAS表现出了良好的应用前景。

关键词: 硅基季铵盐, Pickering乳液, 性能研究, 相反转, 稳定性

Abstract:

Amphiphilic SiO₂-C18QAS could be obtained by modifying hydrophilic SiO₂ nanoparticles with dimethyloctadecyl [3-（trimethoxysilyl）propyl] ammonium chloride （C18QAS）. Pickering emulsions could be facilely stabilized for various oil-water two-phase systems by SiO₂-C18QAS due to its good interfacial activity. With the increase of the mass fraction of SiO₂-C18QAS, the diameter of emulsion droplets would decline first until reaching a constant value. With the increase of the functionalization degree of SiO₂-C18QAS, however, the droplet size of emulsions would decrease before reaching a minimum at the usage of 0.3 mmol C18QAS and then increase gradually. Moreover, phase inversion could be triggered by changing the acid-base property of water phase or the volume ratio between oil and water. After standing for 1 month, the emulsion was observed without any significant change, exhibiting excellent stability. SiO₂-C18QAS was a promising candidate for further applications.

Key words: silicon-based quaternary ammonium salt, Pickering emulsion, performance, phase inversion, stability

中图分类号:

TB383

薛伟,武江红,杜志平. 硅基季铵盐改性纳米SiO₂稳定的Pickering乳液性能研究[J]. 日用化学工业, 2020, 50(3): 182-187.

Wei XUE,Jiang-hong WU,Zhi-ping DU. Performance of Pickering emulsions stabilized by SiO₂ nanoparticles modified with silicon-based quaternary ammonium salts[J]. China Surfactant Detergent & Cosmetics, 2020, 50(3): 182-187.

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硅基季铵盐改性纳米SiO₂稳定的Pickering乳液性能研究

Performance of Pickering emulsions stabilized by SiO₂ nanoparticles modified with silicon-based quaternary ammonium salts

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