Abstract
Direct polycondensation of p-aminobenzoic acid (ABA) or p-hydroxybenzoic acid (HBA) was carried out in solutions of polyarylate (copolyester from tere-/iso-phthalic acids (50/50) and bisphenol A) at 25°C in the presence of triphenylphosphine and hexachloroethane as an initiator for the direct polycondensation of these monomers. Solution casting after the direct polycondensation provided opaque films in which aromatic polyamide or polyester was finely dispersed within the matrix of polyarylate. Mechanical properties of these films indicated increase in modulus and tensile strength at elevated temperatures. In-situ direct polycondensation leads to the formation of new molecular composite materials.
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Ogata, N., Sanui, K. & Itaya, H. In-Situ Direct Polycondensation in Polymer Matrices I. In-Situ Direct Polycondensation in Polyarylate. Polym J 22, 85–91 (1990). https://doi.org/10.1295/polymj.22.85
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DOI: https://doi.org/10.1295/polymj.22.85
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