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Equilibrium Melting Point Depression for Blends of Isotactic Polystyrene with Poly(2,6-dimethylphenylene oxide)
Macromolecules (1984)
  • William MacKnight, University of Massachusetts Amherst
  • Joaquin Plans
  • F. E. Karasz
Abstract
The melting behavior of pure isotactic polystyrene (iPS) and blends with poly(2,6-di­methylphenylene oxide) (PPO) have been investigated by differential scanning calorimetry (DSC). Evidence for interaction between the blend components has been detected from melting point depression studies and by examining the composition dependence of the glass transition temperature. The interaction parameter has been evaluated via the Flory-Huggins approximation of the thermodynamic mixing of two polymers, which yielded an average value of x = -0.17 for the range of compositions analyzed. This result is in agreement with the interaction parameter values derived from the negative heat of mixing for a-PS/PPO liquid blends previously reported in the literature. 
Keywords
  • Equilibrium,
  • Melting Point,
  • Depression,
  • Blends,
  • Isotactic Polystyrene,
  • Poly(2 6-dimethylphenylene oxide)
Disciplines
Publication Date
1984
Citation Information
William MacKnight, Joaquin Plans and F. E. Karasz. "Equilibrium Melting Point Depression for Blends of Isotactic Polystyrene with Poly(2,6-dimethylphenylene oxide)" Macromolecules Vol. 17 (1984) p. 810 - 814
Available at: http://works.bepress.com/william_macknight/110/