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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Polymer Degradation and Stability; v. 95, n. 4, p. 666-671, APR 2010.
• Citações Web of Science: 11

Resumo

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)

• Processo FAPESP: 07/54023-0 - Desenvolvimento de metodologia para detectar a presença de pet-pós consumo em embalagens PET para alimentos
• Beneficiário: Wanderson Romão
• Modalidade de apoio: Bolsas no Brasil - Mestrado