Further Exploration of Heat of Immersion as a Method To Quantify Wettability For Particulates:  Effect of Temperature

Xu, Boshen

Further Exploration of Heat of Immersion as a Method To Quantify Wettability For Particulates: Effect of Temperature

dc.contributor.advisor	Grady, Brian
dc.contributor.author	Xu, Boshen
dc.contributor.committeeMember	Huang, Liangliang
dc.contributor.committeeMember	Razavi, Sepideh
dc.date.accessioned	2023-05-12T21:55:30Z
dc.date.available	2023-05-12T21:55:30Z
dc.date.issued	2023-05-12
dc.date.manuscript	2023-04-12
dc.description.abstract	A previous paper by our group concluded that to distinguish between the wettability of different particles, heat of immersion is the best method as opposed to the Washburn or sessile drop method. In this paper, heats of immersion of three different particles with three different wettabilities are measured at different temperatures to examine one critical assumption concerning the temperature dependence of the heat of immersion. In addition, surfactants are added to the water and the effect of surfactant concentration on the heat of wetting is measured. One particularly noteworthy aspect of the current study is that some measurements were made at pressures higher than atmospheric with no more difficulty than measurements made at atmospheric pressure. The previous paper showed that, for certain particles, the relationship used by us and others between heat of wetting and contact angle gave impossible values for certain surfaces. In this thesis, the derivation of that expression is re-examined and certain assumptions are highlighted. Because of issues with the assumptions, we conclude that using heat of immersion to quantify wetting is perfectly appropriate, but without measurement of the values of liquid-solid interfacial energy with temperature, conversion to the contact angle is likely not appropriate. Keywords – nanoparticles, wettability, silica, heat of immersion, contact angle	en_US
dc.identifier.uri	https://shareok.org/handle/11244/337691
dc.language	en_US	en_US
dc.subject	Engineering, Chemical.	en_US
dc.subject	wettability	en_US
dc.subject	heat of immersion	en_US
dc.subject	silica	en_US
dc.thesis.degree	Master of Science	en_US
dc.title	Further Exploration of Heat of Immersion as a Method To Quantify Wettability For Particulates: Effect of Temperature	en_US
ou.group	Gallogly College of Engineering::School of Chemical, Biological and Materials Engineering	en_US