List of Titles

Authors: Muzenda, Edison
Date: 2014
Subjects: Activity coefficients , Aromatic compounds , Esters , Solubility , Volatile organic compounds
Type: Article
Identifier: uj:4771 , ISSN 2320–4087 , http://hdl.handle.net/10210/11946
Description: This work focused on the interactions that occur between ester polymeric solvents and simple aromatic volatile organic compounds (VOCs). Solutes were selected from various functional groups in their simplest form and computations of infinite dilution activity coefficients were performed using the Modified UNIFAC Dortmund group contribution model using a Microsoft Excel spreadsheet designed for this purpose. For polar aromatic VOCs, solubility decreased with increase in size of the ester solvent molecule and the opposite behavior was observed for non-polar VOCs. For all aromatic - ester solvent interactions, solubility increased with the increase in the degree of ester unsaturation.
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Authors: Scheepers, Jacques J. , Muzenda, Edison , Belaid, Mohamed
Date: 2013
Subjects: Activity coefficients , Aromatic compounds , Solubility , Esters
Type: Article
Identifier: uj:4836 , http://hdl.handle.net/10210/12484
Description: This work focused on the interactions that occur between ester solvents and simple aromatic solutes. Solutes were selected from various functional groups in their simplest form, and predictions of activity coefficients at infinite dilution were made using the Modified UNIFAC Dortmund group contribution model. The model computation was set up on a Microsoft Excel spreadsheet specifically designed for this purpose. For polar aromatic solutes, solubility decreased with increase in size of the ester solvent molecule and the opposite was found to be true for non-polar solutes. For all aromatic/ ester solvent interactions there was a decrease in activity coefficients with an increase in the degree of ester unsaturation.
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