Premium
The determination of polymer interfacial tension by drop image processing: Comparison of theory and experiment for the pair, poly(dimethyl siloxane)/polybutndiene
Author(s) -
Anastasiadis S. H.,
Chen J. K.,
Koberstein J. T.,
Sohn J. E.,
Emerson J. A.
Publication year - 1986
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760262010
Subject(s) - polybutadiene , materials science , surface tension , drop (telecommunication) , thermodynamics , siloxane , polymer , flory–huggins solution theory , binary number , polymer chemistry , liquid drop , composite material , copolymer , physics , mathematics , telecommunications , computer science , arithmetic
Abstract The interfacial tensions of immiscible binary blends of poly(dimethyl siloxane) (PDMS) and polybutadiene (PBD) have been determined as a function of molecular weight and temperature. The technique employed for these measurements takes advantage of recent advances in the determination and analysis of pendant fluid drop profiles. The experimental data are compared to the predictions of square gradient theories and theories based on the diffusion equation approach as developed by Helfand and co‐workers. Qualitative agreement is obtained with both types of theory when the Flory‐Huggins interaction parameter is taken to be comprised of two terms: a temperature independent term of entropic origin; and an enthalpic term that is inversely dependent upon the temperature.