Thermal Hysteresis Study of Considering the Winter Flounder Antifreeze Protein HPLC-6 Pinning Effect
According to the adsorption mode and structural characteristics of the antifreeze pro-tein HPLC-6 molecules at the ice-water interface region,the hindering effect of molecular pinning on the ice movement was investigated by considering the molecules at the ice-water interface region as hard cylindrical particles with regular arrangement,and the maximum hindering pressure of the molecules on the ice surface in relation to their concentration was obtained by calculation.Due to the hindering effect of the HPLC-6 molecules,the interfaces between the molecules tended to protrude to form curved interfaces,which led to a decrease in the freezing point temperature of the HPLC-6 solution.The heat hysteresis of the HPLC-6 solution was quantitatively calculated based on the cal-culated maximum hindering pressure of the molecules on the ice surface,combined with the equilib-rium conditions at the curved interface and the Gibson-Thomsom relationship.The results show that the theoretically predicted thermal hysteresis values are in good agreement with the experimen-tal data.
万方数据
维普
