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纤维素苦味酸醚的合成及对肌酐的吸附性能

Synthesis of Ether with Cellulose and Picric Acid and Its Adsorption to Creatinine

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【作者】 李俊业方桂珍李宏振金钟玲刘建威

【Author】 Li Junye,Fang Guizhen,Li Hongzhen,Jin Zhongling(Key Laboratory of Bio-based Material Science and Technology,Ministry of Education(Northeast Forestry University),Harbin 150040,P.R.China);Liu Jianwei(the Train Center of Decoration and Fitment of Shanghai Guild)

【机构】 生物质材料科学与技术教育部重点实验室(东北林业大学)上海市装饰装修行业协会培训中心

【摘要】 以微晶纤维素(MCC)为原料,经环氧化和醚化反应,制备了纤维素衍生物——纤维素苦味酸醚(MCC-PA)。通过红外光谱、元素分析对其进行结构表征,以氮质量分数为优化指标,考查了物料比、氢氧化钠(质量分数36%)的用量、反应温度和反应时间对纤维素苦味酸醚制备的影响。通过单因素试验得出合成条件为:m(苦味酸(PA)):m(环氧化纤维素)=5:1,NaOH用量为30mL,反应温度为45℃,反应时间为3h,此时产物的氮质量分数为2.22%。在模拟人体生理介质的条件下,测定了纤维素苦味酸醚对肌酐的吸附性能,绘制了吸附动力学曲线。结果表明,纤维素苦味酸醚对肌酐的吸附平衡时间为18h,对肌酐的最大吸附容量为2.49mg/g。

【Abstract】 Ether of microcrystalline cellulose-based picric acid(MCC-PA) was prepared from microcrystalline cellulose by the reactions of epoxidation and etherification.The structure of MCC-PA was analyzed by FTIR and element analyzer.Influences of reaction conditions,such as ratio of epoxy cellulose to picric acid(PA),volume of NaOH(36%,by weight),reaction time and reaction temperature,were studied.Results showed that the synthetical conditions were obtained as ratio of epoxy cellulose to picric acid 5:1(by weight),the volume of NaOH(36%) 30mL,reaction temperature 45 degrees C and reaction time 3 hours,and the nitrogen content of MCC-PA was 2.22% under this conditions.The adsorption property of MCC-PA to creatinine was studied under simulated biological conditions.The kinetic curve was given.Results showed that adsorption capacity reached an equilibrium value after 18 hours,and the maximum adsorption capacity was 2.49mg/g.

【基金】 高等学校博士学科点专项科研基金资助项目(20060225008)
  • 【文献出处】 东北林业大学学报 ,Journal of Northeast Forestry University , 编辑部邮箱 ,2009年04期
  • 【分类号】TQ352.79
  • 【被引频次】1
  • 【下载频次】214
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