Abstract
Freezing phenomenon of the water in which air dissolves has been investigated experimentally. Ice layer formed depends on the freezing rate and was divided into three patterns; ice layer involving many small bubbles, ice layer involving muscle-shaped bubbles and transparent ice layer. The effect of additives on trapped and swept phenomenon of air bubbles due to freezing from the viewpoint of electric interactive force. It was found that the critical freezing rate (the maximum freezing rate that air bubbles are swept from the frozen layer) rapidly increased with increasing the concentration of the water solution of [CH3(CH2)15N(CH3)3]Cl. From these results, it became clear that the critical freezing rate strongly depends on the electric double layer force.
