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A thermal method with the potential to determine the weight fraction and the interfacial thickness in multiphase polymer materials is described. The extent of interdiffusion, and hence the development of an interface between two miscible polymers, polyepichlorohydrin and poly(vinyl acetate), with time at 100°C has been studied by means of modulated-temperature differential scanning calorimetry. This...
A quantitative thermal method of determining the weight fraction of interface and the extent of phase separation in polymer materials is described. It is based on the differential of heat capacity signal from modulated-temperature differential scanning calorimetry. By measurement of the increment of heat capacity at the glass transition temperature, the total interface content can be determined...
The differential of heat capacity signal, dC p /dT, from modulated-temperature differential scanning calorimetry (M-T d.s.c.) was used to elucidate the miscibility and glass transition behaviour of poly(methyl methacrylate) (PMMA) and poly(epichlorohydrin) (PECH) blends. The conclusion reached was the same as that reported by Higgins and co-workers (Clark, J.N., Higgins, J.S., Kim, C.K. and...
The glass transition and the effect of specific interactions on this transition process in a binary polymer blend of poly(methyl methacrylate) (PMMA) and poly(styrene-co-acrylonitrile) (SAN), which have very similar glass transition temperatures, have been investigated by means of modulated differential scanning calorimetry. The blends investigated were miscible blends of PMMA and SAN and a physical...
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