结果：在亲水的高分子凝胶基质中，离子形式的双氯芬酸钠扩散速率大于分子形成的扩散速率。
RESULTS:The diffusive rate of diclofenac sodium from the two kinds of hydrophilic polymer gel was higher than that of diclofenac acid.
双甘油分子的羟基密集度要比甘油低，这相对降低了结合水的能力。
Diglycerol has a lower hydroxyl number than glycerol, which imparts a lower water binding ability upon the product.
NCO与水的反应、多异氰酸酯难于在多元醇中的分散均匀以及组份间分子链扩散交联不充分，是研究水性双组份聚氨酯的关键问题。
The reaction between -NCO and water, dispersion of polyisocyanates in polyols, and complete diffusion among different kinds of molecules are key problems to be solved in 2k-WPU.
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