Abstract
Ice crystal growing rate and morphology, which are the characteristics of ice crystal enlarging, depend on the degree of supercooling evaluated by the deviation from the freezing point in the equilibrium condition. However, the growth rate of ice in the solution has not been measured for various solutions. In this study, the rate of ice growing was determined under the optical microscope which has a cold stage cooled by liquid nitrogen. Ice crystal growth rate in pure water which is prepared for the high pressure liquid chromatography showed similar values and an inclination to the previous studies. Growing rates in the solutions which contained NaCl, DMSO, glucose, sucrose, maltose respectively were measured at supercooling temperatures. The empirical equations of ice crystal growing rate were expressed in the power of the degree of supercooling and concentration in lower than 0.1 mol/l. Growth rate in higher concentrations than 0.1 mol/l solution changed drastically, but the reason why such drastic changes occurred was not clarified yet in this work.
