Experimental determination of interface widths in binary polymer blends from free volume measurements

Ramya, P. and Ranganathaiah, C. and Williams, J. F. (2012) Experimental determination of interface widths in binary polymer blends from free volume measurements. POLYMER, 53 (20). pp. 4539-4546.

[img] Text (Full Text)
1-s2.0-S0032386112006568-main.pdf - Published Version
Restricted to Registered users only

Download (550Kb) | Request a copy
Official URL: http://dx.doi.org/10.1016/j.polymer.2012.07.063

Abstract

Interfaces in binary polymer blends play a pivotal role in moulding their physical properties. We observe a diffused interface in immiscible and partially miscible binary polymer blends for which the methods of preparation characterize the interface widths. The interface widths for three binary blends of PVC/PS, PS/PMMA, and PVC/SAN are in the maximum range of 2.15, 5.04 and 6.24 nm respectively. We establish a correlation between hydrodynamic interaction and the Flory-Huggins interaction parameter which is consistent with self-consistent mean field theory and the usual constructed density profile across the interface. Our approach is based on the hydrodynamic interaction which is derived from free volume data measured by positron lifetime spectroscopy. (C) 2012 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Polymer blends; Positron lifetimes; Interface width
Subjects: Physical Sciences > Physics
Divisions: PG Campuses > Manasagangotri, Mysore > Physics
Depositing User: Users 7 not found.
Date Deposited: 08 May 2013 09:47
Last Modified: 08 May 2013 09:47
URI: http://eprints.uni-mysore.ac.in/id/eprint/8436

Actions (login required)

View Item View Item