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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fingerprinting of bottle-grade poly(ethylene terephthalate) via matrix-assisted laser desorption/ionization mass spectrometry

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Author(s):
Romao, Wanderson [1, 2] ; Franco, Marcos F. [1] ; Iglesias, Amadeu H. [3] ; Sanvido, Gustavo B. [2] ; Maretto, Danilo A. [4] ; Gozzo, Fabio C. [3] ; Poppi, Ronei J. [4] ; Eberlin, Marcos N. [2] ; De Paoli, Marco-Aurelio [1]
Total Authors: 9
Affiliation:
[1] Univ Estadual Campinas, Lab Polimeros & Reciclagem, Inst Quim, BR-13083971 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Lab ThoMSom Espectrometria Massas, Inst Quim, BR-13083971 Campinas, SP - Brazil
[3] Univ Estadual Campinas, Lab Prote, Inst Quim, BR-13083971 Campinas, SP - Brazil
[4] Univ Estadual Campinas, Lab Quimiometria Quim Analit, Inst Quim, BR-13083971 Campinas, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Polymer Degradation and Stability; v. 95, n. 4, p. 666-671, APR 2010.
Web of Science Citations: 11
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. (AU)