生物可降解型聚谷氨酸高吸水树脂的制备

PREPARATION OF BIODEGRADABLE POLYGLUTAMIC ACID HIGH WATER-ABSORBING RESIN

以乙二醇缩水甘油醚作为交联剂 ,用化学交联法合成聚谷氨酸高吸水树脂 ,研究了聚合物浓度、交联剂、p H值、反应时间等条件对凝胶吸水性能的影响。结果表明 ,适宜的反应条件为聚谷氨酸 12 % ,交联剂用量为聚谷氨酸量的 18.75 % ,p H5左右 ,4 0℃水浴恒温振荡反应 4 8h,所得树脂的最高吸水率可达 160 0 g/ g。

A biodegradable high water-absorbing re si n was prepared from poly(γ-glutamic acid) and ethylene glycol glycidyl eth er.The synthesis conditions such as Polymer concentration, amount of cross linki ng agent, pH, reaction time etc were investigated. The results show that the opt imum synthesis conditions are as follows: 12% of content of poly(γ-glutami c acid), 18.75% of ratio of cross linker to poly(γ-glutamic acid), pH= 5, 48 h, 40 ℃. The resin prepared has super water absorption capacity of 1600 g ／g.