Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/66976
Type: Artigo de periódico
Title: Fingerprinting of bottle-grade poly(ethylene terephthalate) via matrix-assisted laser desorption/ionization mass spectrometry
Author: Romao, W
Franco, MF
Iglesias, AH
Sanvido, GB
Maretto, DA
Gozzo, FC
Poppi, RJ
Eberlin, MN
De Paoli, MA
Abstract: Matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) has been shown to provide a valuable technique to study the thermomechanical degradation of poly(ethylene terephthalate) (PET). MALDI-MS has been tested to monitor both the admixture of post-consumption bottle-grade PET (PET(pc)-btg) with virgin bottle-grade PET (PET(v)-btg) and the thermomechanical degradation effects on the chemical properties of PET(v)-btg. Principal component analysis of MALDI-MS data classify the samples into groups with specific features: a) PET-btg with intrinsic viscosities of 0.80 or 0.65-0.60 dL g(-1)): b) Processed or virgin PET with the same intrinsic viscosity; c) PET(v)-btg from PET containing PET(pc)-btg; and d) PET(v)-btg from different manufacturers. MALDI-MS data is therefore able to reveal the quality of PET-btg resins preventing frauds and illegal use of recycled PET-btg. (C) 2009 Elsevier Ltd. All rights reserved.
Subject: Poly(ethylene terephthalate)
Thermomechanical degradation
MALDI-MS
Recycling process
Principal component analysis
PCA
Country: Inglaterra
Editor: Elsevier Sci Ltd
Rights: fechado
Identifier DOI: 10.1016/j.polymdegradstab.2009.11.046
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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