酸碱电导滴定法测定N-十二烷基壳聚糖取代度

罗菊香; 李幼华; 郑洹; 董美红

doi:10.13386/j.issn1002-0306.2014.07.004

酸碱电导滴定法测定N-十二烷基壳聚糖取代度

三明学院资源与化工学院

基金项目:

福建省自然科学基金项目(2013J01205)；福建省中青年教师教育科研项目(JA13298)；福建省大学生创新创业训练计划项目(ZL1225/CS(sj))；

详细信息

作者简介:
罗菊香 (1982-) , 女, 硕士, 讲师, 研究方向:天然高分子改性。;

中图分类号: O657.11;O636.1
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- 文章访问数: 183
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出版历程
- 收稿日期: 2013-08-20

Determination of substitution degree of N-Alkyl Chitosan by Acid-Base Conductometric Titration

School of Resourses and Chemical Engineering, Sanming University

摘要

摘要: 本文利用NaOH标准溶液滴定溶解于过量HCl溶液中的N-十二烷基壳聚糖样品,研究了酸碱滴定中N-十二烷基壳聚糖溶液电导率值的变化,通过测定电导率值,计算烷基壳聚糖的取代度。该方法的相对标准偏差为1.37%,改变测试条件,取代度值无显著性差异（p>0.05）。该方法具有操作简便、准确可靠、重复性好等优点。
- 电导滴定法 /
- N-十二烷基壳聚糖 /
- 取代度
Abstract: The sample of N-Alkyl Chitosan was dissolved in excess HCl which then was titrated by standard NaOH. The change of conductivity of N-Alkyl Chitosan in the acid-base titration was studied. The conductivity of the solution was detected and the substitution degree of N-Alkyl Chitosan was calculated.The RSD of the method was 1.37%.The substitution degree had no significant difference when the conditions of the experiment were changed ( p >0.05) .The method was easy, accurate, reliable with good repeatability.
- conductometric titration /
- N-Alkyl Chitosan /
- substitution degree

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参考文献(15)

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