Dynamic viscosity of various samples of polypropene and polyvinylchloride |
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| Authors: | V Verney R Genillon J Nivière J -F May |
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| Institution: | (1) Laboratoire de rhéologie des matières plastiques UER SCIENCES, Université de Saint-Etienne, 23 rue du Docteur Paul Michelon, F-42023 Saint-Etienne Cédex, France;(2) BAT TARAFLEX, Service Recherche et Développement, Boulevard Garibaldi, F-69170 Tarare, France |
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| Abstract: | Summary Complex dynamic viscosity experiments carried out on a balance rheometer CONTRAVES (Dr. Képès' system) for the polypropene samples and on a RHEOMETRICS viscometer apparatus for the polyvinylchloride formulations have allowed to determine the rheological behaviour of these materials. In the case of polypropene, the Maxwell-Wiechert model seems to be in good agreement with the rheological behaviour of this material. For the polyvinylchloride, a dynamic power-law has been proposed. This law correlates the complex dynamic viscosity modulus |
*| with the pulsation of the frequency . It shows a certain analogy with that determined in the static mode.With 7 figures and 8 tables |
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| Keywords: | Polypropene polyvinylchloride dynamic viscosity |
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