关键词: 保水剂;重复吸水性;吸水倍率;吸水形态

Abstract:

In different solutions, the repeated water-absorbing capacities of four types of super-absorbent polymers (SAPs) with organic macromolecules were comparatively studied by simulated experiments. The result showed that in tap water and soil solution, the original water absorbency and repeated water-absorbing capacity of SAPs were reduced relative to those in distilled water. The reduced effect of water quality on the original water absorbency of SAP was higher than that of soil solution. The water-absorbing abilities of SAPs would be increased in higher concentrations, but the increases were reduced with the repeated utilization. It was preliminarily considered that among four types of SAPs labeled BF, JP, BJ and WT, JP conduct the best performance in sustaining use, BF and WT took the second place, while BJ was the worst. The sustaining effects of SAPs varied according to their water-absorbing status, stability and gel structure.

Key words: super-absorbent polymer, repeated water-absorbing capacity, water absorbency, water-absorbing status