PDF(Pubmed)
Abstract：
Gelation through the liquid-liquid contact between a polymer solution and a gelator solution has been attempted with various combinations of gelator and polymer solutions. In many combinations, the gel growth dynamics is expressed as X∼t, where X is the gel thickness and t is the elapsed time, and the scaling law holds for the relationship between X and t. In the blood plasma gelation, however, the crossover of the growth behavior from X∼t in the early stage to X∼t in the late stage was observed. It was found that the crossover behavior is caused by a change in the rate-limiting process of growth from the free-energy-limited process to the diffusion-limited process. How, then, would the crossover phenomenon be described in terms of the scaling law? We found that the scaling law does not hold in the early stage owing to the characteristic length attributable to the free energy difference between the sol-gel phases, but it does in the late stage. We also discussed the analysis method for the crossover in terms of the scaling law.
摘要：
已经尝试用胶凝剂和聚合物溶液的各种组合通过聚合物溶液和胶凝剂溶液之间的液-液接触进行胶凝。在许多组合中，凝胶生长动力学表示为X~t，其中X是凝胶厚度，t是经过的时间，并且缩放定律适用于X和t之间的关系。在血浆凝胶化过程中，然而,观察到生长行为从早期的X〜t到后期的X〜t的交叉。发现交叉行为是由生长的速率限制过程从自由能限制过程到扩散限制过程的变化引起的。How,然后,我们发现，由于溶胶-凝胶相之间的自由能差导致的特征长度，因此在早期阶段就不存在，但在后期确实如此。我们还根据缩放定律讨论了交叉的分析方法。
