STABILITY OF THE AMORPHOUS STATE IN THE SYSTEM WATER 1,2-PROPANEDIOL
STABILITY OF THE AMORPHOUS STATE IN THE SYSTEM WATER 1,2-PROPANEDIOL
复制标题
DOI：
10.1016/0011-2240(79)90074-9
复制
发表时间：
1979-01-01
期刊：
影响因子：
2.7
通讯作者：
KAUFMANN, A
中科院分区：
文献类型：
--
作者：
BOUTRON, P;KAUFMANN, A
对于相同的水含量，1，2-丙二醇水溶液的完全无定形状态的稳定性为对于先前用甘油、二甲亚砜、乙醇和乙二醇研究的溶液，也是如此。在冷冻保护与稳定性相关的程度上，1，2-丙二醇应该是比所有这些其他化合物更好的冷冻保护剂。1，2-丙二醇的水溶液具有简单的行为。在冷却时没有水合物结晶，对于中间浓度，在快速冷却后升温时，只有冰从完全无定形状态结晶，第一立方，然后六方。非晶态的高度稳定性表现在临界升温速率上，在此速率之上不发生结晶，以及冷却时结晶的困难。
For the same water contents, the stability of the wholly amorphous state of the aqueous solutions of 1,2-propanediol is .mchgt. that for the solutions previously studied with glycerol, dimethylsulfoxide, ethanol and ethylene glycol. To the degree that cryoprotection is related to that stability, 1,2-propanediol should be a better cryoprotectant than all these other compounds. Aqueous solutions of 1,2-propanediol have a simple behavior. No hydrate crystallizes on cooling and for intermediate concentrations, on warming after fast cooling, only ice crystallizes from the wholly amorphous state, 1st cubic, then hexagonal. The great stability of the amorphous state is shown by the critical warming rates, above which no crystallization occurs, and by the difficulty in crystallizing on cooling.