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Title: Rheological properties of poly[ethylene co-(methylacrylate)], polychloroprene and their blends
Authors: Kundu, Patit Paban
Tripathy D.K.
Published in: Polymer
Abstract: Rheological properties of blends of poly[ethylene-co-(methylacrylate)] (PEMA, methyl acrylate content 22%) and polychloroprene (CR) have been studied through capillary and dynamic elongational flow. Both capillary and dynamic out of phase viscosity (??E) decreases with increased shear rate and frequency in accordance with the power law. On the other hand dynamic extensional viscosity (??E) shows a non-linear relationship with frequency with an initial increase followed by a sharp drop at around 11 Hz. The positive activation energy of shear flow indicates lowering of viscosity at higher temperature. 30/70 and 70/30 PEMA/CR blends show maximum relative positive deviation (RPD) in case of shear and dynamic flow respectively. RPD increases linearly with shear rate for capillary flow whereas for dynamic flow, RPD shows non-linear relationship with frequency. The increase of RPD with temperature for both capillary and dynamic flows indicates better interaction between PEMA and CR in their blends. © 1998 Elsevier Science Ltd. All rights reserved.
Citation: Polymer (1998), 39(10): 1869-1874
Issue Date: 1998
Publisher: Elsevier BV
Keywords: Dynamic extensional viscosity
Relative positive deviation
Shear viscosity
ISSN: 323861
Author Scopus IDs: 35475516300
Author Affiliations: Kundu, P.P., Rubber Technology Centre, I.I.T., Kharagpur, W.B. 721302, India
Tripathy, D.K., Rubber Technology Centre, I.I.T., Kharagpur, W.B. 721302, India
Funding Details: One of the authors (PPK) is grateful to Council for Scientic and Industrial Research (CSIR), New Delhi, for providing financial support to carry out this work.
Corresponding Author: Tripathy, D.K.; Rubber Technology Centre, I.I.T., Kharagpur, W.B. 721302, India
Appears in Collections:Journal Publications [CH]

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