| 紫外分光光度法测定含吡啶盐型共聚物的阳离子度 |
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| 引用本文： | 蒋晓慧,陈志,胡星琪.紫外分光光度法测定含吡啶盐型共聚物的阳离子度[J].分析化学,2006,34(4):551-553. |
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| 作者姓名： | 蒋晓慧 陈志 胡星琪 |
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| 作者单位： | 1. 西华师范大学化学化工学院,南充,637002
2. 西南石油学院化工学院,成都,610500 |
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| 摘 要： | 报道了用紫外分光光度法在268nm处定量测定含吡啶环的高分子共聚物中吡啶环的含量,据此计算出该共聚物的阳离子度。实验结果表明:共聚物的阳离子度随着疏水碳链的增长而逐渐减小;同时与高聚物的阳离子度测定的经典方法———AgNO3法进行了比较,结果表明:对于含有吡啶环的高聚物的阳离子度测定,对于含有共轭体系的高聚物的分析如阳离子度的测定和对具有特征紫外吸收体系的含量测定等,紫外分光光度法是一种简便、快速、准确而有效的实验方法。
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| 关 键 词： | 阳离子度 紫外分光光度法 阳离子型 共聚物 |
| 收稿时间： | 06 1 2005 12:00AM |
| 修稿时间： | 2005-06-012005-08-19 |
Determination of Cationic Degree of Cationic Copolymers by Ultraviolet Spectrophotometry |
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| Jiang Xiaohui,Chen Zhi,Hu Xingqi.Determination of Cationic Degree of Cationic Copolymers by Ultraviolet Spectrophotometry[J].Chinese Journal of Analytical Chemistry,2006,34(4):551-553. |
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| Authors: | Jiang Xiaohui Chen Zhi Hu Xingqi |
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| Institution: | 1. Chemistry and Chemical Engineering College of China West Normal University, Nanchong 637002; 2. Chemical Engineering College of South-West Petroleum Institute, Chengdu 610500 |
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| Abstract: | The concentrations of pyridiniumring in the copolymers were measured by ultraviolet spectrophotometry at 268 nm,and the cationic degrees were obtained by computing.The results showed that the cationic degrees decreased with the increase of hydrophobic chain.For the comparison,the cationic degrees were also determined by using AgNO_3 deposition method.It proved that ultraviolet spectrophotometry is a simple,fast,precise and effective method in measuring the cationic degree of cationic copolymers with pyridinium ring,and it can be used in measurement of conjugative components in corresponding copolymers. |
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| Keywords: | Cationic degree ultraviolet spectrophotometry cationic copolymer |
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