Phase Diagrams of High-Density-Polyethylene—1,2,4,5-Tetrachlorobenzene Mixtures According to DSC Data

Abstract

Direct experimental proof was obtained that 1,2,4,5-tetrachlorobenzene is soluble in solid and fused high-density polyethylene. It was shown that the shapes of semi-crystalline-polymer—low-molecularmass-crystalline-compound phase diagrams obtained using DSC were independent of whether the system was considered to be a mixture of two crystalline compounds or a liquid with a crystalline compound. In contrast with mixtures of low-molecular-mass crystalline compounds that form eutectic mixtures of strictly defined compositions, mixtures of the polymer and low-molecular-mass compound were characterized by a certain range of compositions in which both components crystallized simultaneously.