Abstract
Interfacial tension between polystyrene and polybutadiene is predicted by using a square gradient theory in conjunction with the Flory-Orwoll-Vrij equation-of-state expression for the free energy of mixing. The equation-of-state interaction parameter is determined by fitting the theory to the experimental cloud points. The square gradient coefficient is also calculated by the relation derived from a scattering function. The combined theory for interfacial tension predicts a magnitude and temperature dependence of interfacial tension although no adjustable parameter is used in calculating interfacial tension. The molecular weight dependence of interfacial tension is also predicted, and well described by a relation γ = γ ∞ + CM n −z where z = 2/3 for low molecular weight species and z = 1 for higher molecular weight species.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.