电位滴定法测定MMA-MAA-nBA共聚物中羧基含量

Determination of Carboxyl Group in MMA MAAnBA Potentiometric Titration

本文提供了以电位滴定法测定ＭＭＡ—ＭＡＡ—ｎＢＡ共聚物中羧基含量的方法。待测试液中聚合物的适宜的浓度范围为０．５～５０ｇ／Ｌ。对滴定剂、溶剂、试样处理、温度等影响测试的因素进行了讨论，提出了适宜的控制条件。本方法测试误差＜５％。

In this paper the method of carboxyl group in MMAMAAnBA determinated by potentiometric titration was suggested. The suitable concentration range of the test solution is from 0.5g/L to 50g/L. The effective factors such as the titrant, the solvent, the treatment method to the sample, the temperature and so on was discussed in this paper, and the suitable determination condition was presented. The determination error is less than 5%.