Imperial College London

Professor Omar K. Matar

Faculty of EngineeringDepartment of Chemical Engineering

Vice-Dean (Education), Faculty of Engineering
 
 
 
//

Contact

 

+44 (0)20 7594 9618o.matar Website

 
 
//

Assistant

 

Miss Nazma Mojid +44 (0)20 7594 3918

 
//

Location

 

506ACE ExtensionSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Hennessy:2016:10.1016/j.jcis.2016.10.074,
author = {Hennessy, MG and Ferretti, GL and Cabral, JT and Matar, OK},
doi = {10.1016/j.jcis.2016.10.074},
journal = {Journal of Colloid and Interface Science},
pages = {61--71},
title = {A minimal model for solvent evaporation and absorption in thin films},
url = {http://dx.doi.org/10.1016/j.jcis.2016.10.074},
volume = {488},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - We present a minimal model of solvent evaporation and absorption in thin films consisting of a volatile solvent and non-volatile solutes. An asymptotic analysis yields expressions that facilitate the extraction of physically significant model parameters from experimental data, namely the mass transfer coefficient and composition-dependent diffusivity. The model can be used to predict the dynamics of drying and film formation, as well as sorption/desorption, over a wide range of experimental conditions. A state diagram is used to understand the experimental conditions that lead to the formation of a solute-rich layer, or “skin”, at the evaporating surface during drying. In the case of solvent absorption, the model captures the existence of a saturation front that propagates from the film surface towards the substrate. The theoretical results are found to be in excellent agreement with data produced from dynamic vapour sorption experiments of ternary mixtures comprising an aluminium salt, glycerol, and water. Moreover, the model should be generally applicable to a variety of practical contexts, from paints and coatings, to personal care, packaging, and electronics.
AU - Hennessy,MG
AU - Ferretti,GL
AU - Cabral,JT
AU - Matar,OK
DO - 10.1016/j.jcis.2016.10.074
EP - 71
PY - 2016///
SN - 0021-9797
SP - 61
TI - A minimal model for solvent evaporation and absorption in thin films
T2 - Journal of Colloid and Interface Science
UR - http://dx.doi.org/10.1016/j.jcis.2016.10.074
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000389785500008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/44610
VL - 488
ER -