Solution blending of polystyrene and poly(methyl methacrylate)

Charles M. Burns, Woo Nyon Kim

Research output: Contribution to journalArticle

26 Citations (Scopus)


Blends of poly(methyl methacrylate) (PMMA) and polystyrene (PS) have been investigated by differential scanning calorimetry and scanning electron microscopy. Blends were made of a low molecular weight PS with three PMMAs having number-average molecular weights of (1) 18,300, (2) 37,000, and (3) 211,000. The blend was found to be partially miscible. The composition-dependent values of the polymer-polymer interaction parameter (g12) were determined and found to be from 0.015 to 0.029 for solution casting at 25°C. The interaction parameter (g12) increases with increasing PMMA molecular weights in the PMMA/PS blend systems. This result is consistent with the behavior of the glass transition temperatures and with the microscopy study which indicate that compatibility is greater in the PMMA-1/PS blends having the low molecular weight of PMMA than in the PMMA-3/PS blends having the higher molecular weights of PMMA.

Original languageEnglish
Pages (from-to)1362-1372
Number of pages11
JournalPolymer Engineering and Science
Issue number21
Publication statusPublished - 1988 Nov 1
Externally publishedYes


ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Chemistry
  • Polymers and Plastics

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