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Comparison of the nanostructure and mechanical performance of highly exfoliated epoxy-clay nanocomposites prepared by three different protocols

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hdl:2117/115881

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Shiravand, Fatemeh
Hutchinson, John M.Més informacióMés informació
Calventus Solé, YolandaMés informacióMés informacióMés informació
Ferrando Piera, FrancescMés informació
Document typeArticle
Defense date2014-05-30
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
ProjectNUEVOS TERMOESTABLES MEJORADOS BASADOS EN RESINAS EPOXI Y POLIMEROS DENDRITICOS (MICINN-MAT2011-27039-C03-03)
Abstract
Three different protocols for the preparation of polymer layered silicate nanocomposites based upon a tri-functional epoxy resin, triglycidyl para-amino phenol (TGAP), have been compared in respect of the cure kinetics, the nanostructure and their mechanical properties. The three preparation procedures involve 2 wt% and 5 wt% of organically modified montmorillonite (MMT), and are: isothermal cure at selected temperatures; pre-conditioning of the resin-clay mixture before isothermal cure; incorporation of an initiator of cationic homopolymerisation, a boron tri-fluoride methylamine complex, BF3·MEA, within the clay galleries. It was found that features of the cure kinetics and of the nanostructure correlate with the measured impact strength of the cured nanocomposites, which increases as the degree of exfoliation of the MMT is improved. The best protocol for toughening the TGAP/MMT nanocomposites is by the incorporation of 1 wt% BF3·MEA into the clay galleries of nanocomposites containing 2 wt% MMT.
CitationShiravand, F., Hutchinson, J.M., Calventus, Y., Ferrando, F. Comparison of the nanostructure and mechanical performance of highly exfoliated epoxy-clay nanocomposites prepared by three different protocols. "Materials", 30 Maig 2014, vol. 7, núm. 6, p. 4196-4223. 
URIhttp://hdl.handle.net/2117/115881
DOI10.3390/ma7064196
ISSN1996-1944
Publisher versionhttp://www.mdpi.com/1996-1944/7/6/4196
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  • POLTEPO - Polímers Termoestables Epoxídics - Articles de revista [107]
  • Departament de Màquines i Motors Tèrmics - Articles de revista [449]
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