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dc.contributor.authorThompson, R. B.
dc.contributor.authorPark, Chul B.
dc.contributor.authorChen, P.
dc.contributor.authorWei, H.
dc.date.accessioned2016-03-11 19:22:53 (GMT)
dc.date.available2016-03-11 19:22:53 (GMT)
dc.date.issued2009-06-10
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0927775709003598
dc.identifier.urihttp://hdl.handle.net/10012/10319
dc.descriptionThis document is the accepted manuscript version of a published article. Published by Elsevier in the journal "Colloids and Surfaces A: Physicochemical and Engineering Aspects" volume 354, issues 1-3, page 347-352. doi:10.1016/j.colsurfa.2009.06.005.en
dc.description.abstractSurface tension of a polymer melt in a supercritical fluid is a principal factor in determining cell nucleation and growth in microcellular foaming. This work focuses on the surface tension of a crystalline polymer, high density polyethylene (HDPE), in supercritical nitrogen under various temperatures and pressures. The surface tension was determined by Axisymmetric Drop Shape Analysis-Profile (ADSA-P). The dependence of the surface tension on temperature and pressure, at temperatures above the HDPE melting point, ~125°C, was found to be similar to that of the amorphous polymer polystyrene (PS) in supercritical CO2, previously reported; i.e., the surface tension decreased with increasing temperature and pressure. Below 125°C and above 100°C, HDPE underwent the process of crystallization, where the surface tension dependence on temperature was different from that above the melting point, and decreased with decreasing temperature. Differential Scanning Calorimetry (DSC) characterization of the polymer was carried out to reveal the process of HDPE crystallization and relate to this surface tension behavior. It was found that the amount of the decrease in surface tension was related to the rate of temperature change and hence the extent of polymer crystallization.en
dc.description.sponsorshipNSERC CRCen
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofseriesColloids and Surfaces A: Physicochemical and Engineering Aspects;354en
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectsurface tensionen
dc.subjecthigh density polyethyleneen
dc.subjectpolymer foamingen
dc.titleSurface Tension of High Density Polyethylene (HDPE) in Supercritical Nitrogen: Effect of Polymer Crystallizationen
dc.typeArticleen
dcterms.bibliographicCitationThompson, Russell B., Park, C. B., Chen, P., Wei, H., (2009). "Surface Tension of High Density Polyethylene (HDPE) in Supercritical Nitrogen: Effect of Polymer Crystallization", Colloids and Surfaces A: Physicochemical and Engineering Aspects, 354, 347-352. doi:10.1016/j.colsurfa.2009.06.005.en
uws.contributor.affiliation1Faculty of Scienceen
uws.contributor.affiliation2Physics and Astronomyen
uws.typeOfResourceTexten
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen


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