Abstract
Poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene) (PES) and poly(m-phenylene-isophthalamide) (aramid) were blended by a conventional solution blending method. The PES/aramid solution blended films, prepared by casting from the N,N-dimethylacetamide (DMAc) solution of the two polymer mixtures, exhibited two glass transition temperatures and gave phase-separated translucent or opaque films over the entire PES/aramid composition ranges. The morphology observed by scanning electron microscope also revealed that the blend films had two phase structure with the PES domain dispersed in the aramid matrix. The tensile modulus and tensile strength of the films were somewhat low because of the heterogeneous morphology compared with the component polymer films, while the elongation at break of the blend films increased remarkably, reaching to about 190%, indicative of the tough and ductile films. The annealing of the blend films afforded high temperature resistant films with high tensile modulus and strength due to both crystallization and partial cross-linking of the aramid component.
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Hayashi, H., Kakimoto, Ma. & Imai, Y. Compatibility and Mechanical Properties of Binary Blends Composed of Aromatic Poly(ether sulfone) and Poly(m-phenyleneisophthalamide) by Solution Blending. Polym J 26, 527–534 (1994). https://doi.org/10.1295/polymj.26.527
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DOI: https://doi.org/10.1295/polymj.26.527