Miscibility and rheological properties of epoxy resin blends with aromatic polyethers

Abstract

The miscibility of the bisphenol A epoxy oligomer with a number of aromatic polyethers is studied via optical interferometry. It is shown that polysulfone and polycarbonate are unlimitedly soluble in the oli gomer. The dissolution of polycarbonate is accompanied by a chemical interaction and the formation of a new phase. For poly(ether sulfone) and poly(ether imide), amorphous phase separations with the LCST and the UCST, respectively, are observed. The polymer solutions are Newtonian liquids, and the systems in which phase separation occur feature the yield stress. A shift of the phase equilibrium lines during the action of shear is revealed.

Epoxy nanocomposites as matrices for aramid fiber‐reinforced plastics

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