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Authors
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Amirfazli, A. ; Grundke, K. ; Michel, S. ; Neumann, A. W.
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Title
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A new method for simultaneous determination of surface tension and density of polymer melts from shape of a pendent drop
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Date
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31.12.2000
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Number
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14190
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Abstract
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In technological processes such as powder coating, polymer blending and development of composite materials the properties and behavior of the final product depends strongly on the surface (interfacial) tension of the polymer melts. However, the high viscosity and the limited thermal stability of polymer melts as well as high temperature cause several difficulties in the experimental determination of their surface tension. Therefore, exact experimental data are often hard to find. To this end, an accurate and easy to operate method of measuring surface tension of polymer melts is desirable. Density of polymer melts is also a key parameter needed in the above processes; however, its determination is also a difficult task. Recently we developed a technique to determine surface tension and density of polymer melts simultaneously by analyzing the shape of a sessile drop. The aim of this contribution is to report on the improvement of our new technique for simultaneous determination of surface tension and density of polymer melts by using a pendent drop rather than a sessile drop. To demonstrate the capability of our new technique with pendent drops, surface tension and density of DER 664 UE, an epoxy resin based on bisphenol-A (molecular weight, M sub w = 2000 gr/mole), is determined and reported here.
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Publisher
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Polymeric Materials: Science and Engineering
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Wikidata
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Citation
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Polymeric Materials: Science and Engineering 82 (2000) 33-34
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DOI
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http://www.csa.com/partners/viewrecord.php?requester=gs&collection=TRD&recid=200008B2P0411EP
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Tags
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PG_SurfaceTension
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