Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2361
Title: Influence of filler-polymer interactions on the cure mismatch of dissimilar polymeric blends
Authors: Kundu, Patit Paban
Tripathy D.K.
Published in: Journal of Applied Polymer Science
Abstract: Cure mismatch between the blends of two dissimilar polymers, poly[ethylene(vinyl acetate)](EVAc-28, VAc content 28%) and polychloroprene (CR) was investigated through rheometric, mechanical, and dynamic mechanical properties. These studies indicate cure-heterogeneity due to fast curing as well as degradation of CR with dicumyl peroxide (DCP) at 170°C, which facilitates easy liberation of acidic HCl. The low temperature curing of unfilled blends at 145°C reduces the rate of curing as well as liberation of HCl, leading to lower cure heterogeneity and improved physical properties compared to those cured at 17°C. The high specific component of surface energy of carbon black (N110) leads to better filler-polymer interaction with more polar CR and causes lowering in effective occluded volume measured from storage modulus. Carbon black suppresses the cure heterogeneity of the blends and improves their physical properties considerably. CR, which shows higher minimum rheometric torque compared to EVAc-28, is more viscous and hence carbon black incorporation is relatively difficult. This also leads to higher agglomerate structure causing higher networking factor. © 1997 John Wiley & Sons, Inc.
Citation: Journal of Applied Polymer Science (1997), 64(2): 321-328
URI: http://repository.iitr.ac.in/handle/123456789/2361
Issue Date: 1997
Keywords: Carbon black (N110)
Cure mismatch
Effective occluded volume
EVAc-28/CR blends
ISSN: 218995
Author Scopus IDs: 35475516300
7102699027
Author Affiliations: Kundu, P.P., Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721 302, India
Tripathy, D.K., Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721 302, India
Corresponding Author: Tripathy, D.K.; Rubber Technology Centre, Indian Institute of Technology, Kharagpur 721 302, India
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.