Determination of molar ratio of primary secondary and tertiary amines in polymers by applying derivatization and NMR spectroscopy

被引：14

作者：

Liu, Qing ^{[1
]}

Zhu, Marcel ^{[1
]}

机构：

[1] Huntsman Asia Pacific Shanghai Co Ltd, R&D Ctr Chem, Shanghai 200245, Peoples R China

来源：

POLYMER TESTING | 2016年 / 56卷

关键词：

Amine; Trifluoroacetic acid; NMR; Molar ratio; ALIPHATIC-AMINES; POLYETHERAMINES; CHROMATOGRAPHY; DERIVATIVES; H-1-NMR;

D O I：

10.1016/j.polymertesting.2016.10.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A trifluoroacetic acid derivatization combined with H-1 NMR spectroscopy method for determining the molar ratio of primary, secondary, and tertiary amines in small molecules and polymers was discussed. Amines reacted with trifluoroacetic acid to form their salts RNH3+, R2NH2+, and R3NH+. The H-1 NMR signals of these protonated amines (NH3+, NH2+, and NH+) were separated well in the spectra. Based on the integration of these protonated amine signals, the molar ratio of primary, secondary, and tertiary amines can be calculated. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：174 / 179

页数：6

共 18 条

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