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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2360
Title: Rheological properties of the blends of polychloroprene with poly[ethylene(vinyl acetate)]
Authors: Kundu P.P.
Bhattacharya A.K.
Tripathy D.K.
Published in: Journal of Applied Polymer Science
Abstract: Blends of polylethylene(vinylacetate)] (EVAc-45; 45% VAc content) and polychloroprene (CR) have been studied with respect to capillary and dynamic flow. It is found that EVAc-45, CR, and their blends are shear thinning (pseudoplastic) in nature. Though shear viscosity (?a) and dynamic out-of-phase viscosity (??E) obeys power law, dynamic elongational viscosity (??E) does not follow it due to the synchronization of molecular vibration with the applied frequency at around 11 Hz. Both ?a and ??E of the blends show positive deviation with respect to their additive values. The relative positive deviation (RPD) in shear flow increases with increasing temperature and shear rate. In the case of dynamic flow, RPD increases with increasing temperature but exhibits a decreasing trend with increasing frequency. RPD can be fitted well into a fifth-order equation with a weight fraction of CR (WCR) in EVAc-45-CR blends. From rheological point of view, this relative positive deviation indicates blend compatibility between EVAc-45 and CR. © 1997 John Wiley & Sons, Inc.
Citation: Journal of Applied Polymer Science (1997), 66(9): 1759-1765
URI: http://repository.iitr.ac.in/handle/123456789/2360
Issue Date: 1997
Keywords: Blend compatibility
Relative positive deviation
Shear and dynamic extensional viscosity
ISSN: 218995
Author Scopus IDs: 35475516300
16218380100
7102699027
Author Affiliations: Kundu, P.P., Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India
Bhattacharya, A.K., Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India
Tripathy, D.K., Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India
Corresponding Author: Tripathy, D.K.; Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India
Appears in Collections:Journal Publications [CH]

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