用β－环糊精、聚乙烯醇和丙烯酰胺制备的高吸水性树脂的耐盐性及生物降解行为1）

采用反相悬浮法，以β－环糊精、聚乙烯醇和丙烯酰胺为主要原料，制备了高吸水性树脂。分别研究了树脂在不同浓度Cl－盐、SO2－4盐，以及不同pH缓冲溶液中的吸液行为，并测定了树脂在青霉、黑曲霉及褐腐菌中的生物降解性能。实验结果表明：树脂在同浓度Cl－盐溶液中的吸液效果比在SO2－4盐溶液中好；在0．05～1．00 mg／L的低质量浓度Fe3＋盐溶液中，树脂的吸液量仍可达700～1050 g／g。树脂在pH＝4～12的范围内均具有较好的吸液效果。霉菌对树脂具有不同程度的生物降解作用，树脂水凝胶在褐腐菌中的生物降解效果最佳，生物降解率高达81．3％，是环保型材料。

Salt Tolerance and Biodegradation Behavior of β-Cyclodextrin/Poly(vinyl alcohol)/Acrylamide Superabsorbent Resin

Theβ-cyclodextrin/poly( vinyl alcohol)/acrylamide superabsorbent resin was synthesized by inverse suspension meth-od usingβ-cyclodextrin, poly ( vinyl alcohol) and acrylamide.We studied the swelling characteristics of resin in the differ-ent concentrations of Cl-, SO2-4 , and different pH buffer solution, and the biodegradability of resin in Penicillium, Asper-gillus niger and Brown rot fungi.The swelling capability of resin in chlorine salt was better than that in sulfate.The swell-ing capability of resin was up to 700-1 050 g/g in 0.05-1.00 mg/L in Fe3+.There was good absorption of resin in pH of 4-12.The biodegradation efficiency of the resin hydrogel reached 81.3%in Brown rot fungi.The resin was an environmentally friendly material.