The determination of polymer interfacial tension by drop image processing: Comparison of theory and experiment for the pair, poly(dimethyl siloxane)/polybutndiene
- 1 November 1986
- journal article
- research article
- Published by Wiley in Polymer Engineering & Science
- Vol. 26 (20) , 1410-1418
- https://doi.org/10.1002/pen.760262010
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.Keywords
This publication has 23 references indexed in Scilit:
- Thermodynamics of phase separation in polymer mixturesMacromolecules, 1985
- The measurement of surface and interfacial tension by the axisymmetric drop techniqueColloids and Surfaces, 1984
- Bulk and Interface Thermodynamics of Polymer AlloysAnnual Review of Materials Science, 1983
- Dynamics of fluctuations and spinodal decomposition in polymer blends. IIThe Journal of Chemical Physics, 1981
- Effect of compressibility upon polymer interface propertiesFerroelectrics, 1980
- Block Copolymer Theory. III. Statistical Mechanics of the Microdomain StructureMacromolecules, 1975
- Interfacial and Surface Tensions of PolymersJournal of Macromolecular Science, Part C: Polymer Reviews, 1974
- Equation for the interfacial tension between demixed polymer solutionsJournal of Polymer Science Part A-2: Polymer Physics, 1968
- The statistical mechanics of polymers with excluded volumeProceedings of the Physical Society, 1965
- Proper Accounting of Conformations of a Polymer Near a SurfaceThe Journal of Chemical Physics, 1965