Abstract
A series of aromatic polyethersulfones based on biphenol and dichlorodi phenylsulfone have been prepared and fractionated. The fractions have been character ized by light scattering and intrinsic viscosity measurements. The characteristic ratio C ∝ = 1.96 which is in agreement with the freely rotating nature of the polyethersulfone chain. The molecular weight dependence of the glass transition temperature is established. The low temperature β-transition is at -113°C when measured at 1 rad/s with a mechanical spectrometer.
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