【摘要】 以醚化海藻酸钠(ESA)、聚乙烯醇(PVA)、丙烯酰胺(AM)、丙烯酸(AA)为单体,N,N–亚甲基双丙烯酰胺为交联剂,过硫酸铵-亚硫酸氢钠为引发剂,采用水溶液法制备聚丙烯酸钠p(NaAA)吸水树脂和海藻酸钠/丙烯酸钠(SA/NaAA)、海藻酸钠/丙烯酸钠/聚乙烯醇(SA/NaAA/PVA)及海藻酸钠/丙烯酸钠/丙烯酰胺(SA/NaAA/AM)吸水性复合树脂。采用微生物处理方法对以上吸水材料进行了表观降解性能的初步研究。研究结果发现,环境混合霉菌降低了海藻酸钠复合吸水树脂的质量和力学性能,60d试片失重率依次为9.41%、20.65%和18.60%,试片的破坏形变百分率下降依次是23.5%、25.1%和26.4%;单一细菌和真菌降解实验显示,菌群在含有AM和PVA的SA/AA/AM和SA/AA/PVA凝胶中呈现中度或深度生长状态,在SA/AA凝胶表面呈现轻度生长。更多还原

【Abstract】 Super water absorbent resins P(NaAA),SA/NaAA,SA/NaAA/PVA and SA/NaAA/AM were synthesized from sodium alginate(SA),acrylic acid(AA),polyvinyl alcohol(PVA)and acrylamide(AM),with N,N–methylenebisacrylamide as crosslinking agent,(NH4)2S2O8-NaHSO3 as initiator,by means of aqueous solution polymerization.The degradation behavior of these resins were studied by the microbe method.The results indicated that both weight and mechanical property of resins decreased by environmental complex fungouds,the weight losses of sheets of gels in 60d were 9.41%、20.65% and 18.60%,the deformation ratios of sheets of gels were 23.5%,25.1% and 26.4% respectively.Mono-germ and mono-fungus tests showed obvious growth of fungoids on the surface of SA/NaAA/AM and SA/NaAA/PVA gels,and slight growth on the surface of SA/NaAA gel.更多还原