Phase-separation phenomena in solutions of poly(2,6-dimethyl-1,4-phenylene oxide). I. Thermodynamic parameters of solutions in toluene

Koenhen, D.M. and Smolders, C.A. (1977) Phase-separation phenomena in solutions of poly(2,6-dimethyl-1,4-phenylene oxide). I. Thermodynamic parameters of solutions in toluene. Journal of Polymer Science: Polymer Chemistry Edition, 15 (1). pp. 155-166. ISSN 0360-6376

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Abstract:	New experimental data have been collected on thermodynamic properties of solutions of poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) in toluene. The Flory-Huggins interaction parameters g have been determined from light scattering measurements. These values are in agreement with values obtained by osmotic measurements at low concentrations and they allow the calculation of a melting point curve which fits the experimental melting points. No liquid-liquid phase separation can be calculated, as was concluded in a preceding paper. Spinodals could not be detected by light scattering or DSC-measurements. This also indicates that liquid-liquid phase separation does not occur. The phase separation on cooling of a PPO-toluene solution is thus believed to be a crystallization phenomenon.
Item Type:	Article
Copyright:	© 1977 Wiley InterScience
Link to this item:	http://purl.utwente.nl/publications/70778
Official URL:	http://dx.doi.org/10.1002/pol.1977.180150114
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