Interaction parameters for blends containing polycarbonates: 1. Tetramethyl bisphenol-A polycarbonate/polystyrene

Detection of compatibility of some rubber blends by DSC

“…For example, the calorimetric methods can discover the phase separation long before it is macroscopically evident through turbidity. Such contradictions between the results obtained by different methods could be attributed to the fact that each method is sensitive to another molecular level [3,4]. Accordingly, it is of interest to investigate the compatibility by the DSC method for three technically important rubber blends and also to compare with the available literature data obtained by ultrasonic method [5,6].…”

“…It is still not clear whether the components in a blend are mixed on a segmental level or on a scale somewhere between segmental and molecular [1,2]. Furthermore, different methods used in the detection of phase separation could yield different results [3,4]. For example, the calorimetric methods can discover the phase separation long before it is macroscopically evident through turbidity.…”

Control of phase separation behavior of PC/PMMA blends and their application to the gas separation membranes

“…Gibbs free energy density based on volume and its partial derivatives involved in eq (1) were reported previously. 27,28 Gibbs free energy density of this model is a function of chain length and reduced properties, i.e., P ϭ P/P*, T ϭ T/T*, and ϭ /*, where P*, T*, and * are characteristic properties of the polymer mixture. Characteristic properties of PC and PMMA reported elsewhere were used for the interaction energy calculation.…”

Effect of Method of Preparation on Molecular Packing of TMPC/PS Blends

“…Furthermore, this blend shows a low critical solution temperature (LCST) at about 230¡C. 3 The samples used in these investigations were prepared by the solvent casting method.1h8 However, it is of technical importance to compare the degree of compatibility * To whom all correspondence should be addressed.…”