Vp. Privalko et al., Composition-dependent properties of polyethylene/kaolin composites - VI. Thermoelastic behavior in the melt state, J THERM ANA, 59(1-2), 2000, pp. 509-516
The equilibrium pressure-volume-temperature properties and thermoelastic be
havior of kaolin-filled composites of the injection molding grade of high d
ensity polyethylene (HDPE) were studied in the temperature interval 423-473
K and in the pressure range 30-100 MPa. It was established that the HDPE m
elts in filled composites existed in a somewhat expanded, more compressible
state. This effect was quantitatively accounted for by the increased numbe
r of external degrees of freedom derived from the Simha-Somcynsky equation
of state. The effect of the coupling agent on thermal diffusivities and spe
cific heat capacities of filled samples turned out negligibly small.