A simple Karl Fischer titration procedure for determination of total hydroxyl content in silanol-terminated polysiloxanes

被引：4
|
作者：
Kosonen, JP [1 ]
Ruohonen, JK [1 ]
机构：
[1] Leiras Oy, R&D Polymer React Engn, FIN-20101 Turku, Finland
来源：
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION | 1998年 / 4卷 / 04期
关键词：
silanol determination; Karl Fischer titration; polysiloxanes; poly(dimethylsiloxane);
D O I：
10.1080/10236669808009717
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
This paper describes a simple procedure for the determination of total hydroxyl content in simple silanols and silanol-terminated polysiloxanes. The proposed procedure is based on a conventional pyridine-free Karl Fischer titration method. A temperature of 50 degrees C is used to accelerate and complete the reaction between the KF reagent and silanol (SiOH) groups. Validation shows that the procedure is precise and accurate. Typical relative standard deviation of the procedure is 1-2%. When compared to a routine FTIR method, the Karl Fischer titration procedure produced similar quantitative results, but was superior in terms of simplicity in equipment and standardization.
引用
收藏
页码：283 / 293
页数：11
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