Glass transition temperatures, density and conductivity data, and far-infrared spectra of fused zinc chloride + β-aminoethanol hydrochloride mixtures

Abstract

Densities and conductivities of fused ZnCl₂ + β-aminoethanol hydrochloride mixtures containing up to c. 72 mole % ZnCl₂ are reported for the temperature range from 293 K (approximately) to 393 K. Molar volume isotherms are almost linear throughout the composition range, while thermal expansivity isotherms have minima in the vicinity of 8 mole % ZnCl₂ and maxima at about 25 mole % ZnCl₂.     Mixtures are glass-forming from c. 11 mole % ZnCl₂ to at least 72.5 mole % ZnCl₂. The glass transition temperature is almost invariant from 11 to 25 mole % ZnCl₂, and increases linearly from 30 mole % ZnCl₂.     Infrared spectra (500-200cm^-1) of liquid samples supercooled to room temperature, are reported for mixtures containing 20,26, 33, 63, and 77 mole % ZnCl₂.