Chain Dimensions and Rheology of Poly(arylene ethers)

Abstract

Dilute solution and melt viscosities of two poly(arylene ether ketones) were compared. One polymer contained all para linkages in the backbone and the other contained one meta linkage per repeat unit. Molecular dimensions were shown to agree with calculated values and entanglement spacings could be predicted using the semi-empirical formula of Graessley and Edwards. Frictional properties in the two melts differed considerably when compared in ‘corresponding states' at T g +100°C.