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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleMonitoring the polyamide 11 degradation by thermal properties and X-ray fluorescence spectrometry allied to chemometric methodspt_BR
dc.contributor.authorDomingos, Ept_BR
dc.contributor.authorPereira, TMCpt_BR
dc.contributor.authorFilgueiras, PRpt_BR
dc.contributor.authorBueno, MIMSpt_BR
dc.contributor.authorde Castro, EVRpt_BR
dc.contributor.authorGuimaraes, RCLpt_BR
dc.contributor.authorde Sena, GLpt_BR
dc.contributor.authorRocha, WFCpt_BR
dc.contributor.authorRomao, Wpt_BR
unicamp.authorDomingos, Eloilson Pereira, Thieres M. C. Filgueiras, Paulo R. de Castro, Eustaquio V. R. de Sena, Geovane L. Romao, Wanderson Fed Univ Espirito Santo UFES, Dept Chem, BR-29075910 Vitoria, ES, Brazilpt_BR
unicamp.authorBueno, Maria Izabel M. S. Univ Estadual Campinas, UNICAMP, Inst Chem, Xray Spect Grp, BR-13084971 Campinas, SP, Brazilpt_BR
unicamp.authorGuimaraes, Regina C. L. Petr Brasileiro SA PETROBRAS, CENPES, BR-21949900 Rio De Janeiro, RJ, Brazilpt_BR
unicamp.authorRocha, Werickson F. C. Natl Inst Metrol Qual & Technol Inmetro, Chem Metrol Div Dquim, BR-25250020 Xerem, RJ, Brazilpt_BR
dc.subject.wosNear-infrared Spectroscopypt_BR
dc.description.abstractThe influence of temperature (110 and 120 degrees C) on the ageing of piping made from polyamide 11 (PA-11) containing 1012% of plasticizer was studied using deionized water (pH approximate to 7.0). A clean analytical methodology has been employed for quality control of polymeric materials: energy-dispersive X-ray fluorescence spectrometry (ED-XRF). It provides a fast and suitable technique to characterize chemical elements because of its multielemental capability, good sensitivity, high precision, short analytical time, and nondestructive nature. Herein, the content of additive in PA-11 was monitored from ED-XRF measurements where the abundance of the S line is directly related to the ageing time, agreeing with the thermogravimetric analysis. The XRF data were allied to chemometric treatment to classify PA-11 samples according to the amount of additive and weight average molar mass change, predicting the ageing time, and viscosity values of PA-11. Therefore, the XRF can be used as a clean analytical methodology to monitor the PA-11 degradation, thus eliminating the use of toxic organic solvents (necessary to viscosity measurements) and reducing the working time. Also, the effect of hydrolysis on the structure over time and the material morphology were monitored through measurements of dynamic mechanical analysis and differential scanning calorimetry. Copyright (c) 2012 John Wiley & Sons,
dc.relation.ispartofX-ray Spectrometrypt_BR
dc.relation.ispartofabbreviationX-Ray Spectrom.pt_BR
dc.identifier.citationX-ray Spectrometry. Wiley-blackwell, v. 42, n. 2, n. 79, n. 86, 2013.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.provenanceMade available in DSpace on 2014-07-30T14:03:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2013en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:41:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2013en
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