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Phase equilibrium and mechanisms of crystallization in liquid-liquid phase separating system
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. University of Strathclyde, United Kingdom .
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Transport Phenomena. University of Limerick, Ireland .
2015 (English)In: Fluid Phase Equilibria, ISSN 0378-3812, E-ISSN 1879-0224, Vol. 385, 120-128 p.Article in journal (Refereed) Published
Abstract [en]

The influence of liquid-liquid phase separation (LLPS) in a crystallizing system is examined, and the liquid-liquid tie lines are determined in the ternary system of butyl paraben, water and ethanol. Crystallization by evaporation in droplets (solution of butyl paraben in ethanol and water mixtures) of homogeneous solution and two-phase liquid mixtures on plates of different materials: glass, plastic, steel, and tin were investigated by microscopy. Different crystallization and liquid-liquid phase separation behaviour are observed depending on initial droplet composition and the surface material. This work reveals that crystallization in the LLPS solution of butyl paraben in ethanol-water mixtures starts in the butyl paraben rich phase as can be explained by a higher butyl paraben concentration, and a lower solid-liquid interfacial energy.

Place, publisher, year, edition, pages
2015. Vol. 385, 120-128 p.
Keyword [en]
Evaporation crystallization, Butyl paraben, Liquid-liquid phase separation, Nucleation, Ethanol and water
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-159972DOI: 10.1016/j.fluid.2014.11.007ISI: 000347578400013Scopus ID: 2-s2.0-84909644076OAI: oai:DiVA.org:kth-159972DiVA: diva2:793142
Note

QC 20150306

Available from: 2015-03-06 Created: 2015-02-12 Last updated: 2017-12-04Bibliographically approved

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CiteExportLink to record
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