Interaction energies in polymer/polymer mixtures

✍ Scribed by A. Etxeberria; A. Unanue; C. Uriarte; J.J. Iruin

• Book ID: 104164613
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 802 KB
• Volume: 38
• Category: Article
• ISSN: 0032-3861
• DOI: 10.1016/s0032-3861(96)00976-7

✦ Synopsis

In the application of the lattice fluid theory to explain and simulate thermodynamic functions and phase diagrams of polymeric mixtures involving both homo-and copolymers, the only adjustable parameter is the so-called characteristic interaction energy density AP*. In this paper, we present a test of consistency between the AP* values obtained from phase diagrams and from retention specific volumes determined by inverse gas chromatography. Measurements have been done on a blend of poly(viny1 methyl ether) and poly(hydroxy ether of bisphenol A), which exhibits an LCST-type phase diagram. The previously reported AP' temperature dependence seems to be verified. Another interesting conclusion is the dominant role played by AP* in the thermodynamic functions describing the miscibility of the mixture.