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Journal of Polymer Research
Erschienen in: Journal of Polymer Research 2/2013

01.02.2013 | Original Paper

Synthesis, characterization and thermal oxidative stability of rigid epoxy polymers cured from aromatic mono- and di-amines

verfasst von: Humaira Masood Siddiqi, Adeel Afzal, Samia Sajid, Zareen Akhter

Erschienen in: Journal of Polymer Research | Ausgabe 2/2013

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Abstract

Synthesis, characterization and thermal properties of some rigid epoxy polymers cured from aromatic mono- and di-amine are presented. The aromatic mono- and di-amine are prepared via nucleophilic substitution reaction of p-nitrochlorobenzene with the respective mono- and di-hydroxybiphenyl, and via subsequent hydrogenation of the aromatic nitro products. The structures of both, mono- and di-amines, are confirmed by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (1HNMR) and elemental (CHN) analysis. Furthermore, three types of rigid epoxy polymers, (i) HBREP, (ii) HCREP, and (iii) BCREP, are prepared by melt processing and curing of the epoxy monomers with (i) monoamine, (ii) diamine, and (iii) 1: 1 mixture of mono- and di-amines, respectively. These rigid epoxy polymers are characterized by FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). TGA and DSC results show excellent thermal oxidative stability (Td10 ≥ 400 °C) and substantially high glass transition temperatures (Tg = 80–120 °C) for these rigid epoxy polymers. The intermediary BCREP exhibits the highest Tg as well as the maximum heat resistance and thermal stability regardless of its lower chemical crosslink density with respect to HCREP. The kinetic analyses of the oxidative degradation of polymers also reveal sufficiently high activation energy of pyrolysis for BCREP.
Vorheriger Artikel Properties of poly(vinylidene fluoride)-graft-poly(N-isopropylacrylamide) membranes prepared by alkali treatment
Nächster Artikel Synthesis of novel thermoresponsive micelles by graft copolymerization of N-isopropylacrylamide on poly(ε-caprolactone-co-α-bromo-ε-caprolactone) as macroinitiator via ATRP

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Metadaten
Titel
Synthesis, characterization and thermal oxidative stability of rigid epoxy polymers cured from aromatic mono- and di-amines
verfasst von
Humaira Masood Siddiqi
Adeel Afzal
Samia Sajid
Zareen Akhter
Publikationsdatum
01.02.2013
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 2/2013
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-012-0041-0

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