Title Strategy for the development and characterization of environmental friendly emulsions by microfluidization technique
Authors Trujillo-Cayado, Luis A. , SANTOS GARCÍA, JENIFER, Ramirez, Pablo , Alfaro, Maria C. , Munoz, Jose
External publication Si
Means J. Clean. Prod.
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 6.39500
Publication date 20/03/2018
ISI 000425558600064
DOI 10.1016/j.jclepro.2018.01.028
Abstract This study reports on the procedure for the development of ecological emulsions formulated with renewable components as a sustainable alternative to products containing traditional organic solvents. Firstly, in order to evaluate the interfacial and emulsifying properties of a green surfactant (Levenol F-200), the adsorption isotherm and interfacial rheology at a biosolvent/water interface were investigated. In the second step, Levenol F-200 and the renewable biosolvent (alpha-pinene) were used in order to obtain stable concentrated emulsions by microfluidization technique. The influence of different configurations in the Microfluidizer, namely Y and Y + Z, on the stability and rheological properties of these emulsions was studied. The characterization of these green systems involved droplet size distributions, Cryo-SEM and optical microscopy, flow and oscillatory shear tests, as well as multiple light scattering. Emulsions with series configuration showed smaller droplet size and better stability against creaming. Lastly, a fumed silica (Aerosil 200) was used as a thickener to modify the rheological properties of the emulsions and hence, to improve their physical stability. Furthermore, this work provides relevant new findings and a systematic strategy for the development of stable green emulsions using an ecological formulation and series configuration in the microfluidization technique. (C) 2018 Elsevier Ltd. All rights reserved.
Keywords Biosolvent; Eco-friendly surfactant; Emulsion stability; Fumed silica; Interfacial tension; Microfluidization
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