Assembling kaolinite nanotube at water/oil interface for enhancing Pickering emulsion stability

被引：33

作者：

Cai, Xiaolong ^{[1
]}

Li, Cunjun ^{[1
]}

Tang, Qi ^{[1
]}

Zhen, Bowen ^{[1
]}

Xie, Xiangli ^{[2
]}

Zhu, Wenfeng ^{[1
]}

Zhou, Chunhui ^{[4
]}

Wang, Linjiang ^{[1
,3
]}

机构：

[1] Guilin Univ Technol, Coll Mat Sci & Engn, Guilin 541004, Peoples R China

[2] Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China

[3] Guilin Univ Technol, Collaborat Innovat Ctr Explorat Hidden Nonferrous, Guilin 541004, Peoples R China

[4] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, Res Grp AMSC, Hangzhou 310032, Zhejiang, Peoples R China

来源：

APPLIED CLAY SCIENCE | 2019年 / 172卷

基金：

中国国家自然科学基金;

关键词：

Kaolinite; Nanotube; Emulsifier; Pickering emulsion; Emulsion stability; HALLOYSITE CLAY NANOTUBES; PARTICLES; RELEASE; INTERCALATION; SURFACTANTS; NANOSCROLLS; MECHANISM;

D O I：

10.1016/j.clay.2019.02.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Emulsion has a wide range of applications. Good Pickering emulsifiers have always been sought to use for high stable emulsion. In this work, nanometer-sized kaolinite nanotube was prepared and used as emulsifier to stabilize Pickering emulsion. The emulsion stability was investigated by measuring the emulsion volume, emulsion viscosity, optical microanalysis of the emulsion droplets, and Cryoelectron microscopy of the distributed structure of emulsifier at the water/oil interface. The results showed that the emulsion droplet diameter was 60 pm, and the emulsion viscosity reached up to 3470 mPa.S. The creaming index was 76% and even up to 36% after centrifugation at 2000 rpm. The enhanced emulsion stability was ascribed to assembly and alignment of the kaolinite nanotube at the water/oil interface, forming a denser single-layer particle film to prevent the coalescence of emulsion droplets.

引用

页码：115 / 122

页数：8

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