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Related Experiment Video

Updated: Jun 13, 2026

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Liquid chromatography method to determine polyamines in thermosetting polymers.

M S Dopico-García1, J M López-Vilariño, G Fernández-Martínez

  • 1Laboratorio de Química - Centro de Investigacións Tecnolóxicas, Universidade da Coruña, Campus de Esteiro s/n, 15403 Ferrol, Spain.

Analytica Chimica Acta
|May 6, 2010
PubMed
Summary

A new analytical method accurately determines three polyamines (TETA, IPDA, TCD-diamine) in epoxy resin dust. This sensitive HPLC-fluorescence technique offers robust quantification for workplace safety.

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Polyamines like TETA, IPDA, and TCD-diamine are crucial hardeners in epoxy and polyurethane manufacturing.
  • Accurate determination of these amines is essential for quality control and workplace safety assessments.
  • Existing methods may not fully characterize complex polyamines like TCD-diamine.

Purpose of the Study:

  • To develop and validate a simple, robust, and sensitive analytical method for quantifying TETA, IPDA, and TCD-diamine.
  • To apply the developed method for determining free amine content in epoxy resin dust samples.
  • To provide structural information for derivatized polyamines using advanced mass spectrometry.

Main Methods:

  • Derivatization of polyamines using 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate.

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  • High-performance liquid chromatography (HPLC) with fluorescence (FL) detection.
  • HPLC coupled with a linear ion trap-Orbitrap mass spectrometer (LTQ Orbitrap MS) for structural elucidation.

    • Main Results:

    • The HPLC-FL method demonstrated good linearity, precision (2.5-10%), and low detection limits (0.02-0.14 mg/L).
    • Instrumental precision was high, with intraday (0.8-1.5%) and interday (2.9-6.3%) variations.
    • Structural identification of derivatized analytes was achieved using LTQ Orbitrap MS, confirming the method's specificity.

    Conclusions:

    • A novel and effective HPLC-FL method was established for the simultaneous determination of TETA, IPDA, and TCD-diamine.
    • The method is suitable for analyzing polyamine content in real-world samples, such as epoxy resin dust.
    • This analytical approach enhances safety monitoring in industrial environments where these hardeners are used.