Positron annihilation lifetime study of interfaces in ternary polymer blends

Meghala, D. and Ramya, P. and Pasang, T. and Raj, J. M. and Ranganathaiah, C. and Williams, J. F. (2013) Positron annihilation lifetime study of interfaces in ternary polymer blends. Journal of Physics: Conference Series, 443 (1). 012047. ISSN 1742-6588

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Official URL: https://iopscience.iop.org/article/10.1088/1742-65...

Abstract

A new method based on positron lifetime spectroscopy is developed to characterize individual interfaces in ternary polymer blends and hence determine the composition dependent miscibility level. The method owes its origin to the Kirkwood-Risemann-Zimm (KRZ) model for the evaluation of the hydrodynamic interaction parameters (αij) which was used successfully for a binary blend with a single interface. The model was revised for the present work for ternary polymer blends to account for three interfaces. The efficacy of this method is shown for two ternary blends namely poly(styrene-co-acrylonitrile)/poly (ethylene-covinylacetate)/poly(vinyl chloride) (SAN/EVA/PVC) and polycaprolactone /poly(styrene-coacrylonitrile)/poly(vinyl chloride) (PCL/SAN/PVC) at different compositions. An effective hydrodynamic interaction parameter, αeff, was introduced to predict the overall miscibility of ternary blends.

Item Type: Article
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: Arshiya Kousar
Date Deposited: 07 Jan 2020 05:42
Last Modified: 07 Jan 2020 05:42
URI: http://eprints.uni-mysore.ac.in/id/eprint/10373

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