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纤维素选择性氧化制备二醛纤维素
引用本文:吴晓杰,迟红训,黄凤远.纤维素选择性氧化制备二醛纤维素[J].辽东学院学报(自然科学版),2014,21(4):233-235.
作者姓名:吴晓杰  迟红训  黄凤远
作者单位:辽东学院化工与材料学院,辽宁丹东,118003
基金项目:辽宁省自然科学基金项目
摘    要:采用高碘酸钠选择性氧化纤维素制备二醛基纤维素。经单因素实验确定最佳反应时间的基础上采用正交实验,以氧化剂浓度、反应温度、pH值为因素,每个因素设计3个水平,采用滴定方法测定醛基含量,以醛基含量为指标,确定影响反应的主要影响因素及最佳工艺条件。得到的最佳工艺条件:反应温度为35℃,高碘酸钠与纤维素的摩尔比为2∶1,pH值为2。影响反应的因素顺序是温度、pH值和氧化剂浓度。采用红外光谱表征二醛基纤维素分子结构。

关 键 词:纤维素  选择性氧化  二醛基纤维素

Preparation of Dialdehyde Cellulose via Cellulose Selective Oxidation
WU Xiao-jie,CHI Hong-xun,HUANG Feng-yuan.Preparation of Dialdehyde Cellulose via Cellulose Selective Oxidation[J].Journal of Liaodong University:Natural Sciences,2014,21(4):233-235.
Authors:WU Xiao-jie  CHI Hong-xun  HUANG Feng-yuan
Affiliation:WU Xiao - jie, CHI Hong - xun, HUANG Feng - yuan ( College of Chemical Engineering and Materials, Eastern Liaoning University, Dandong 118003, China)
Abstract:Dialdehyde cellulose( DAC) was prepared via sodium periodate as selective oxidized agent. A 3 ×3 orthogonal experiment was applied in the experiment,with factors including oxidant concentration,reaction temperature and pH value. The optimal reaction conditions were determined with content of aldehyde group as an indicator. The optimum conditions were listed as following: the reaction temperature is 35 ℃,molar ratio of sodium periodate to cellulose is 2∶ 1,and pH is 2. It was found that the factors affecting the reaction were successively the temperature,pH value and the oxidant concentration. The molecular structure of dialdehyde cellulose is characterized with infrared spectrum.
Keywords:cellulose  selective oxidation  dialdehyde cellulose
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