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Ionomeric blends of poly(ethylene oxide) with poly(styrene‐ co ‐maleic anhydride) ionomer: Miscibility, crystallization, and melting behavior
Author(s) -
AlSalah Hasan A.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(20000705)77:1<1::aid-app1>3.0.co;2-y
Subject(s) - miscibility , materials science , maleic anhydride , differential scanning calorimetry , polymer chemistry , ethylene oxide , crystallization , glass transition , ionomer , styrene , melting point depression , polymer blend , chemical engineering , copolymer , polymer , melting point , thermodynamics , composite material , engineering , physics
The miscibility and crystallization behavior of poly(ethylene oxide) (PEO) and poly(styrene‐ co ‐maleic anhydride) ionomer (SMAI) blends were studied by the dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). This study has demonstrated that the presence of ion–dipole interactions enhances the miscibility of otherwise immiscible polymers in the PEO and high molecular weight poly(styrene‐ co ‐maleic anhydride) (SMA). The effect of ion–dipole interactions on enhancing miscibility is confirmed by the presence of a single glass transition temperature ( T g ) and a depression of the equilibrium melting temperature of the PEO component. The equilibrium melting temperature of PEO in the blends are obtained using Hoffman‐Weeks plots. The interaction energy density, β, is calculated from these data using the Nishi‐Wang equation. The results suggest that PEO and SMAI blends are thermodynamically miscible in the melt. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1–7, 2000