Abstract
The glass transition behaviours of a series of poly(2,6-dimethylphenylene ethers) with various molecular weights and their blends with polystyrene have been studied. The data are analysed according to the Fox-Flory equation ( M n dependence) and the Gordon-Taylor equation (composition dependence). A more rigorous treatment according to the theory developed by Kanig is presented and data of polystyrene-poly(vinyl methyl ether) blends, as well as polystyrene-poly(methyl vinylether) blends which do not obey the Gordon-Taylor equation, are discussed in the framework of this theory. The theory allows the estimation of the energy required to separateA-B contacts.
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