Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/42112
Title: Improved methodology to measure surface tension and its application to polystyrene or poly(methyl methacrylate) in styrene solutions
Author: Cerpa-Gallegos, M.A.
Jasso-Gastinel, C.F.
Lara-Valencia, V.A.
Gonzalez-Ortiz, L.J.
Issue Date: 2005
Abstract: Several methods to measure surface tension involve some inconveniences when applied to moderate or highly viscous polymer solutions. Therefore, an improved version of the weight drop method (WDM) is proposed here. In addition, a comparative analysis of methods is carried out, including the drop profile (DPM), the selected planes (SPM), the WDM and the one proposed here (WDSM), finding that the WDSM is as easy to apply as the SPM and the WDM, although in practical conditions it is much more accurate than either of them. Moreover, the WDSM allows to reproduce the results that can be obtained using DPM, but, in general, it is much easier to implement and apply than such method. The WDSM was used to determine surface tension in polystyrene or poly(methyl methacrylate) in styrene solutions, where the dependence of such property with polymer average molecular weight and polymer concentration was experimentally evaluated. � 2005 American Chemical Society.
URI: http://www.scopus.com/inward/record.url?eid=2-s2.0-33748305745&partnerID=40&md5=2a81058fab10cd7a988245469c943788
http://dx.doi.org/10.1021/la050095o
http://hdl.handle.net/20.500.12104/42112
Appears in Collections:Producción científica UdeG

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