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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
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.
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页码:666 / 671
页数:6
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