Controllable CO2 -Responsiveness of an Oil-in-Water Emulsion by Varying the Number of Tertiary Amine Groups or the Position of the Hydroxyl Group of Tertiary Amine

The Journal of Physical Chemistry. B
Shanshan DaiHongsheng Lu

Abstract

A series of water-soluble tertiary amines (TAs) are introduced into an oil-in-water (O/W) emulsion stabilized by sodium oleate (NaOA). TAs convert into bicarbonate salts upon bubbling of CO2, which could induce the increase of ionic strength of the aqueous phase, form ion pairs with NaOA by electrostatic interaction, and finally result in demulsification. ζ-Potential, conductivity, pH value, 1H NMR, separation rate, and interfacial tension are applied to figure out the effects of number of tertiary amine groups and different positions of the hydroxyl group. TA with an increasing number of tertiary amine groups can further stabilize the O/W emulsion and accelerate the process of demulsification by bubbling CO2. More tertiary amine groups bring about a more stable emulsion and faster demulsification by bubbling CO2. The position of the hydroxyl group is a key factor affecting the solubility of the corresponding ion pair formed with NaOA. The better the water solubility, the slower the demulsification. The worse the water solubility of the ion pair, the more perfect the demulsification is. More importantly, water-soluble TA, with proper structure, could bring about perfect demulsification.

References

Dec 1, 1975·Journal of Pharmaceutical Sciences·W J MurrayL B Kier
Aug 19, 2006·Science·Yingxin LiuCharles L Liotta
Aug 25, 2009·Journal of the American Chemical Society·Gang LiuHui-Ming Cheng
Dec 22, 2009·Journal of the American Chemical Society·Ning MaXi Zhang
Feb 26, 2013·Chemical Communications : Chem Comm·Xin SuPhilip G Jessop
Mar 7, 2013·Chemistry : a European Journal·Xin SuPhilip G Jessop
Apr 23, 2013·Chemical Communications : Chem Comm·Yongmin ZhangCécile A Dreiss
Jan 28, 2014·Chemical Communications : Chem Comm·Yan DingXi Zhang
Mar 4, 2015·Chemical Communications : Chem Comm·Jesse C KellyMark E Roberts
May 10, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Amanda KohRichard Gross
Jul 5, 2016·Physical Chemistry Chemical Physics : PCCP·A K AlshamraniP G Jessop
Jul 22, 2016·Journal of Colloid and Interface Science·Peipei XuDejun Sun
May 10, 2017·Soft Matter·Dongfang LiuHongsheng Lu
Jun 16, 2017·Journal of Colloid and Interface Science·Qianqian ChenDejun Sun
Aug 28, 2017·Journal of Hazardous Materials·Roberto NisticòMaria Martin

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Citations

Dec 15, 2020·Physical Chemistry Chemical Physics : PCCP·Yue WangShiling Yuan
Jan 6, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Wenjing MaHongsheng Lu
Sep 24, 2021·The Journal of Physical Chemistry. B·Franz M Geiger

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