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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/1639

Title: Quantification of thermodynamics of aqueous solutions of poly(ethylene glycols): role of calorimetry
Authors: MOHITE, LALASO V
JUVEKAR, VINAY A
Keywords: calorimeters
calorimetry
enthalpy
ethylene
ethylene glycol
Issue Date: 2009
Publisher: Elsevier
Citation: Fluid Phase Equilibria 278(1-2), 41-53
Abstract: A correlation based on generalized Flory-Huggins model, which relates the activity data of aqueous poly(ethylene glycol) (PEG) solutions at low temperatures to the binodal curve in the LCST region, has been developed. The temperature dependent parameters of the model are estimated by regression of the experimental data of the enthalpy of mixing of aqueous PEG solutions, obtained using isothermal titration calorimetry. The temperature independent parameters are estimated from the data of the activity of PEG solutions at a single temperature. An attempt to develop a similar correlation based on the hydrogen bond model has been unsuccessful. It is also shown that the correlation based on the activity data alone, does not have the ability to predict the binodal curve and the use of the enthalpy data is essential for this purpose.
URI: http://dx.doi.org/10.1016/j.fluid.2009.01.003
http://hdl.handle.net/10054/1639
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1639
ISSN: 0378-3812
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