Pickering emulsions stabilized by amphiphilic nano-sheets

Andres F. Mejia; Agustin Diaz; Srinivasa Pullela; Ya-Wen Chang; Michael Simonetty; Carrie Carpenter; James D. Batteas; M. Sam Mannan; Abraham Clearfield; Zhengdong Cheng

doi:10.1039/C2SM25846C

Pickering emulsions stabilized by amphiphilic nano-sheets†

Andres F. Mejia,^ab Agustin Diaz,^c Srinivasa Pullela,^a Ya-Wen Chang,^a Michael Simonetty,^a Carrie Carpenter,^c James D. Batteas,^cd M. Sam Mannan,^abd Abraham Clearfield^c and Zhengdong Cheng*^abde

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* Corresponding authors

^a Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, USA
E-mail: zcheng@tamu.edu

^b Mary Kay O'Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX, USA

^c Department of Chemistry, Texas A&M University, College Station, TX, USA

^d Materials Science and Engineering, Texas A&M University, College Station, TX, USA

^e Professional Program in Biotechnology, Texas A&M University, College Station, TX, USA

Abstract

We demonstrate the fabrication of amphiphilic nano-sheets, which are either surface- or edge-modified plates with thickness at the atomic scale, one of the thinnest amphiphilic particles reported so far. They are obtained by exfoliation of functionalized layered crystals, the first time that laminar structures have been utilized to produce such particles. Stable emulsions were made utilizing these nano-sheets. The adsorption of the amphiphilic nano-sheets onto the oil-in-water interfaces and the reduction of surface tension between the PDMS and the amphiphilic nano-sheet suspensions were quantitatively characterized.

Soft Matter

Pickering emulsions stabilized by amphiphilic nano-sheets†

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