A differential scanning calorimetry (DSC) approach for assessing the quality of polyethylene terephthalate (PET) waste for physical recycling: a proof-of-concept study

被引：9
作者：
Sudomova, Lucie [1 ]
Weissmannova, Helena Dolezalova [1 ]
Steinmetz, Zacharias [2 ]
Rezacova, Veronika [1 ]
Kucerik, Jiri [1 ]
机构：
[1] Brno Univ Technol, Inst Chem & Technol Environm Protect, Fac Chem, Purkynova 118, Brno, Czech Republic
[2] RPTU Rheinland Pfalz Tech Univ Kaiserslautern Land, Inst Environm Sci, Grp Environm & Soil Chem, Fortstr 7, D-76829 Landau, Germany
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2023年 / 148卷 / 20期
关键词：
Polyethylene terephthalate; PET; PET-G; DSC; Recycling; Model; ISOTHERMAL CRYSTALLIZATION; BOTTLES; POLY(ETHYLENE-TEREPHTHALATE); DEGRADATION; KINETICS;
D O I：
10.1007/s10973-023-12430-8
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Physical recycling of plastics is among the most important approaches of circular economy. The efficiency of the recycling is influenced by many factors including the number of recycling cycles, composition of plastics, chemical modifications, additives and others. Currently, however, there are no methods enabling to distinguish the quality of plastics for recycling. In this work, we address this issue and suggest a new method based on the correlation of solely thermophysical properties of polyethylene terephthalate (PET) waste obtained using differential scanning calorimetry (DSC) during repeated heating and cooling. The combination of results of differential scanning calorimetry and advanced statistical methods enabled to separate 76 PET samples into six groups according to their origin, chemical modification, degradation and suitability for recycling. The discriminant analysis enabled to suggest a model which uses for the discrimination a combination of temperatures and enthalpies of melting and crystallization. The approach illustrates that thermophysical properties, which can be obtained using a single DSC experiment, can be used to distinguish the polymers of various origin and quality.
引用
收藏
页码：10843 / 10855
页数：13
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[1]   Effect of recycled content and rPET quality on the properties of PET bottles, part I: Optical and mechanical properties [J].
Alvarado Chacon, Fresia ;
Brouwer, Marieke T. ;
Thoden van Velzen, Eggo Ulphard .
PACKAGING TECHNOLOGY AND SCIENCE, 2020, 33 (09) :347-357
[2]   Scientific Opinion on the criteria to be used for safety evaluation of a mechanical recycling process to produce recycled PET intended to be used for manufacture of materials and articles in contact with food [J].
不详 .
EFSA JOURNAL, 2011, 9 (07)
[3]  
[Anonymous], 2013, SNE EFSA J, V11
[4]  
[Anonymous], 2019, Official Journal of European Union, V62, P1
[5]   Impact of hydrolytic degradation on mechanical properties of PET - Towards an understanding of microplastics formation [J].
Arhant, Mael ;
Le Gall, Maelenn ;
Le Gac, Pierre Yves ;
Davies, Peter .
POLYMER DEGRADATION AND STABILITY, 2019, 161 :175-182
[6]   Irreversible structural changes during PET recycling by extrusion [J].
Assadi, R ;
Colin, X ;
Verdu, J .
POLYMER, 2004, 45 (13) :4403-4412
[7]   Chemical compounds and toxicological assessments of drinking water stored in polyethylene terephthalate (PET) bottles: A source of controversy reviewed [J].
Bach, Cristina ;
Dauchy, Xavier ;
Chagnon, Marie-Christine ;
Etienne, Serge .
WATER RESEARCH, 2012, 46 (03) :571-583
[8]   Thermal analysis as a quality tool for assessing the influence of thermo-mechanical degradation on recycled poly(ethylene terephthalate) [J].
Badia, J. D. ;
Vilaplana, Francisco ;
Karlsson, Sigbritt ;
Ribes-Greus, A. .
POLYMER TESTING, 2009, 28 (02) :169-175
[9]   Chain Extension of Poly (Ethylene Terephthalate) by Reactive Extrusion with Secondary Stabilizer [J].
Bimestre, Breno Heins ;
Saron, Clodoaldo .
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, 2012, 15 (03) :467-472
[10]   Cluster Analysis applied to the evaluation of urban landscape quality [J].
Campos, A. ;
Oliveira, R. C. .
SUSTAINABLE CITY XI, 2016, 204 :93-103
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