European Journal of Chemistry

Thermomechanical studies of thermally stable metal-containing epoxy polymers from diglycidyl ether of bisphenol A and amino-thiourea metal complexes

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Published: Mar 28, 2011
DOI: https://doi.org/10.5155/eurjchem.2.1.77-82.183
Keywords:
Amino-thiourea derivatives, Metal-containing epoxy polymers, Dynamic mechanical analysis, Differential scanning calorimeter, Thermogravimetric analysis, DGEBA
Section
Research Article
Issue
Vol. 2 No. 1 (2011): March 2011
Dates
Received 2010-06-23
Accepted 2010-09-20
Published 2011-03-28


Main Article Content

Sohail Saeed
Department of Chemistry, Research Complex, Allama Iqbal Open University, Islamabad-44000, Pakistan
Naghmana Rashid
Department of Chemistry, Research Complex, Allama Iqbal Open University, Islamabad-44000, Pakistan
Peter Jones
Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Postfach, Braunschweig, D-38023, Germany
Rizwan Hussain
National Engineering & Scientific Commission, P.O.Box 2801, Islamabad, Pakistan

Abstract

New thermally stable epoxy polymers containing copper and nickel ions have been prepared by curing diglycidyl ether of bisphenol A (DGEBA) with amino-thiourea metal complexes. Characterization of the metal complexes was carried out using infrared spectroscopy, elemental analysis and mass spectrometry. Determination of the optimum value of the epoxy/thiourea metal complex ratio was studied by means of differential scanning calorimetry. This method is based on the search for the maximum enthalpy change. The properties of the resulting metal-containing epoxy polymers were investigated with respect to glass transition temperature, thermal stability, tensile strength, and viscoelastic properties. Introduction of metal ions, especially the copper ion, into the polymer matrices produced polymers with good thermal stability and mechanical properties. The polymer showed good thermal stability compared to the DGEBA-DDM (DDM: 4,4’-diaminodiphenylmethane) system. The copper-containing epoxy polymer obtained at a mole ratio of copper complex:DGEBA (24:100) showed a 2.6% weight loss after heating at 400 °C and had a storage modulus of 6080 MPa at 125 °C, which is comparable to the epoxy-DDM system.

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How to Cite
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Saeed, S.; Rashid, N.; Jones, P.; Hussain, R. Thermomechanical Studies of Thermally Stable Metal-Containing Epoxy Polymers from Diglycidyl Ether of Bisphenol A and Amino-Thiourea Metal Complexes. Eur. J. Chem. 2011, 2, 77-82.

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