Enhanced thermal stability and lifetime of epoxy nanocomposites using covalently functionalized clay: Experimental and modelling Zabihi, Omid, Khayyam, Hamid, Fox, Bronwyn L. and Naebe, Minoo 2015, Enhanced thermal stability and lifetime of epoxy nanocomposites using covalently functionalized clay: Experimental and modelling, New journal of chemistry, vol. 39, no. 3, pp. 2269-2278, doi: 10.1039/c4nj01768d. Attached Files Name Description MIMEType Size Downloads Title Enhanced thermal stability and lifetime of epoxy nanocomposites using covalently functionalized clay: Experimental and modelling Author(s) Zabihi, Omid orcid.org/0000-0001-8065-2671 Khayyam, Hamid Fox, Bronwyn L. Naebe, Minoo orcid.org/0000-0002-0607-6327 Journal name New journal of chemistry Volume number 39 Issue number 3 Start page 2269 End page 2278 Total pages 10 Publisher Royal Society of Chemistry Place of publication London, Eng. Publication date 2015-03-01 ISSN 1144-0546 1369-9261 Keyword(s) Science & Technology Physical Sciences Chemistry, Multidisciplinary Chemistry LAYERED SILICATE NANOCOMPOSITES MECHANICAL-PROPERTIES KINETIC-ANALYSIS NONISOTHERMAL DATA CURE KINETICS RESIN DEGRADATION SILANE COMPOSITES COMBUSTION Summary The present work aims at finding a relationship between kinetic models of thermal degradation process with the physiochemical structure of epoxy-clay nanocomposites in order to understand its service temperature. In this work, two different types of modified clays, including clay modified with (3-aminopropyl)triethoxysilane (APTES) and a commercial organoclay, were covalently and non-covalently incorporated into epoxy matrix, respectively. The effect of different concentrations of silanized clay on thermal behaviour of epoxy nanocomposites were first investigated in order to choose the optimum clay concentration. Afterwards, thermal characteristics of the degradation process of epoxy nanocomposites were obtained by TGA analysis and the results were employed to determine the kinetic parameters using model-free isoconversional and model-fitting methods. The obtained kinetic parameters were used to model the entire degradation process. The results showed that the incorporation of the different modified clay into epoxy matrix change the mathematical model of the degradation process, associating with different orientations of clay into epoxy matrix confirming by XRD results. The obtained models for each epoxy nanocomposite systems were used to investigate the dependence of degradation rate and degradation time on temperature and conversion degree. Our results provide an explanation as to how the life time of epoxy and its nanocomposites change in a wide range of operating temperatures as a result of their structural changes. Language eng DOI 10.1039/c4nj01768d Field of Research 030304 Physical Chemistry of Materials 091209 Polymers and Plastics 091307 Numerical Modelling and Mechanical Characterisation Socio Economic Objective 860604 Organic Industrial Chemicals (excl. Resins HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2015, Royal Society of Chemistry Persistent URL http://hdl.handle.net/10536/DRO/DU:30074938 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Mon, 10 Aug 2015, 15:47:35 EST Tue, 11 Aug 2015, 05:01:17 EST Tue, 11 Aug 2015, 06:10:28 EST Tue, 11 Aug 2015, 09:22:08 EST Tue, 11 Aug 2015, 09:25:56 EST Wed, 07 Sep 2016, 10:03:49 EST Wed, 06 Dec 2017, 06:16:03 EST Mon, 12 Feb 2018, 14:31:30 EST Mon, 12 Feb 2018, 14:32:11 EST Mon, 05 Mar 2018, 11:22:34 EST Filtered Full Citation counts:   Cited 34 times in TR Web of Science Cited 34 times in Scopus Search Google Scholar Access Statistics: 559 Abstract Views, 187 File Downloads  -  Detailed Statistics Created: Mon, 10 Aug 2015, 15:47:35 EST

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