改性羽毛蛋白接枝丙烯酸高吸水性树脂的制备及生物降解性能研究

以甲醛和亚硫酸氢钠改性的羽毛蛋白（MFP）和丙烯酸（AA）为主要原料,N,N-′亚甲基双丙烯酰胺（NMBA）为交联剂,过硫酸钾-亚硫酸氢钠为引发剂,采用溶液聚合法制备改性羽毛蛋白接枝聚丙烯酸高吸水性树脂P（MFP-g-AA）],并用土壤稀释液微生物法,研究了羽毛蛋白基高吸水性树脂的生物降解性能。考察了,制备水溶性羽毛蛋白的最佳工艺条件为ω（亚硫酸氢钠）∶ω（羽毛）为30∶100、氢氧化钠浓度为0.45%、反应温度96℃、反应时间2 h。在此条件下合成的P（MFP-g-AA）]树脂生物降解性能最好,其凝胶薄片在5 mL土壤稀释溶液中放置25 d,凝胶表面基本被菌落覆盖。

Preparation and Biodegradation of the Modified Feather Protein Grafted Acrylic Acid Superabsorbent Resin

Modified feather protein grafted poly acrylic acid superabsorbent resin P（MFP-g-AA） were synthesized by polymerization of modified feather protein（MFP） which is modified by formaldehyde（HCHO） and ammonium persulfate and sodium bisulfite（K2S2O8-NaHSO3） and acrylic acid（AA） in water when N,N′-methylenebisacrylamide（NMBA） was used as cross-linking agent and ammonium persulfate（K2S2O8） and sodium bisulfite（NaHSO3） as initiator.The biodegradation of P（MFP-g-AA） were investigated with the soil microbial method.After investigating the effect factors of soluble feather protein,the results showed that the optimum hydrolytic conditions were obtained as follows： ω（sodium bisulfite）∶ω（feather）=30 ： l00,alkaline solution（NaOH） concentration： 0.45 %,hydrolytic temperature 100 ℃ and hydrolytic time 2 h.Under these conditions,the P（MFP-g-AA） has the greatest biodegradation in liquid of soil.The resin slice＇s surface was covered by Bacteria community in 25 days with 5 mL soil diluent.