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

被引：13
作者：
Romao, Wanderson [1 ,2 ]
Franco, Marcos F. [2 ]
Iglesias, Amadeu H. [3 ]
Sanvido, Gustavo B. [1 ]
Maretto, Danilo A. [4 ]
Gozzo, Fabio C. [3 ]
Poppi, Ronei J. [4 ]
Eberlin, Marcos N. [1 ]
De Paoli, Marco-Aurelio [2 ]
机构：
[1] Univ Estadual Campinas, Lab ThoMSom Espectrometria Massas, Inst Quim, BR-13083971 Campinas, SP, Brazil
[2] Univ Estadual Campinas, Lab Polimeros & Reciclagem, 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
来源：
POLYMER DEGRADATION AND STABILITY | 2010年 / 95卷 / 04期
基金：
巴西圣保罗研究基金会;
关键词：
Poly(ethylene terephthalate); Thermomechanical degradation; MALDI-MS; Recycling process; Principal component analysis; PCA; FOOD-CONTACT APPLICATIONS; THERMAL-DEGRADATION; POLY(BUTYLENE TEREPHTHALATE); INSTANTANEOUS TYPIFICATION; POLYETHYLENE TEREPHTHALATE; PROCESSING TEMPERATURE; RECYCLING PROCESS; PET; POLYMERIZATION; CONTAMINATION;
D O I：
10.1016/j.polymdegradstab.2009.11.046
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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.
引用
收藏
页码：666 / 671
页数：6
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