Degradation of pet copolyesters under real and laboratory composting conditions
The present work is aimed on the study of degradation of poly(ethylene terephthalate- co -lactate) copolyesters, prepared by chemical modification of PET waste beverage bottles using l -lactic acid, under laboratory (bioreactor) and natural (Central Composting Plant in Brno, Czech Republic) composti...
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| Veröffentlicht in: | Journal of material cycles and waste management 2018, Vol.20 (1), p.414-420 |
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| creator | Vaverková, Magdalena Adamcová, Dana Kotrchová, Lenka Merna, Jan Hermanová, Soňa |
| description | The present work is aimed on the study of degradation of poly(ethylene terephthalate-
co
-lactate) copolyesters, prepared by chemical modification of PET waste beverage bottles using
l
-lactic acid, under laboratory (bioreactor) and natural (Central Composting Plant in Brno, Czech Republic) composting conditions. The structure of solid residues after degradation was analyzed by IR, NMR, thermogravimetric (TGA) methods, and size exclusion chromatography in chloroform and the residues rich on aromatic units were analyzed in CHCl
3
/HFIP solutions. Sample with 57 mol% of aliphatic units showed the highest degree of degradation with mass loss of about 90% independently of composting conditions. The samples with 57 and 60 mol% of aromatic units reached 68 and 51% degradation in the compost pile and only 39 and 5% in laboratory bioreactor. Gravimetric analysis along with molar mass distribution measurement showed that laboratory-level composting study provides more consistent and defined results. However, it should be accompanied with tests performed under real conditions for the purpose of biodegradability evaluation of polymeric materials with varying composition. |
| doi_str_mv | 10.1007/s10163-017-0595-3 |
| format | Article |
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co
-lactate) copolyesters, prepared by chemical modification of PET waste beverage bottles using
l
-lactic acid, under laboratory (bioreactor) and natural (Central Composting Plant in Brno, Czech Republic) composting conditions. The structure of solid residues after degradation was analyzed by IR, NMR, thermogravimetric (TGA) methods, and size exclusion chromatography in chloroform and the residues rich on aromatic units were analyzed in CHCl
3
/HFIP solutions. Sample with 57 mol% of aliphatic units showed the highest degree of degradation with mass loss of about 90% independently of composting conditions. The samples with 57 and 60 mol% of aromatic units reached 68 and 51% degradation in the compost pile and only 39 and 5% in laboratory bioreactor. Gravimetric analysis along with molar mass distribution measurement showed that laboratory-level composting study provides more consistent and defined results. However, it should be accompanied with tests performed under real conditions for the purpose of biodegradability evaluation of polymeric materials with varying composition.</description><identifier>ISSN: 1438-4957</identifier><identifier>EISSN: 1611-8227</identifier><identifier>DOI: 10.1007/s10163-017-0595-3</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Aliphatic compounds ; Biodegradability ; Biodegradation ; Bioreactors ; Chemical modification ; Chloroform ; Civil Engineering ; Composting ; Composts ; Degradation ; Engineering ; Environmental Management ; Gravimetric analysis ; Laboratories ; Lactic acid ; Mass distribution ; NMR ; Nuclear magnetic resonance ; Original Article ; Polyethylene terephthalate ; Residues ; Size exclusion chromatography ; Waste Management/Waste Technology</subject><ispartof>Journal of material cycles and waste management, 2018, Vol.20 (1), p.414-420</ispartof><rights>Springer Japan 2017</rights><rights>Journal of Material Cycles and Waste Management is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c355t-da019076d52ae44aba33824af1bd031eccbe815dd7150eb07763fefc46d67053</citedby><cites>FETCH-LOGICAL-c355t-da019076d52ae44aba33824af1bd031eccbe815dd7150eb07763fefc46d67053</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10163-017-0595-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10163-017-0595-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,777,781,27905,27906,41469,42538,51300</link.rule.ids></links><search><creatorcontrib>Vaverková, Magdalena</creatorcontrib><creatorcontrib>Adamcová, Dana</creatorcontrib><creatorcontrib>Kotrchová, Lenka</creatorcontrib><creatorcontrib>Merna, Jan</creatorcontrib><creatorcontrib>Hermanová, Soňa</creatorcontrib><title>Degradation of pet copolyesters under real and laboratory composting conditions</title><title>Journal of material cycles and waste management</title><addtitle>J Mater Cycles Waste Manag</addtitle><description>The present work is aimed on the study of degradation of poly(ethylene terephthalate-
co
-lactate) copolyesters, prepared by chemical modification of PET waste beverage bottles using
l
-lactic acid, under laboratory (bioreactor) and natural (Central Composting Plant in Brno, Czech Republic) composting conditions. The structure of solid residues after degradation was analyzed by IR, NMR, thermogravimetric (TGA) methods, and size exclusion chromatography in chloroform and the residues rich on aromatic units were analyzed in CHCl
3
/HFIP solutions. Sample with 57 mol% of aliphatic units showed the highest degree of degradation with mass loss of about 90% independently of composting conditions. The samples with 57 and 60 mol% of aromatic units reached 68 and 51% degradation in the compost pile and only 39 and 5% in laboratory bioreactor. Gravimetric analysis along with molar mass distribution measurement showed that laboratory-level composting study provides more consistent and defined results. However, it should be accompanied with tests performed under real conditions for the purpose of biodegradability evaluation of polymeric materials with varying composition.</description><subject>Aliphatic compounds</subject><subject>Biodegradability</subject><subject>Biodegradation</subject><subject>Bioreactors</subject><subject>Chemical modification</subject><subject>Chloroform</subject><subject>Civil Engineering</subject><subject>Composting</subject><subject>Composts</subject><subject>Degradation</subject><subject>Engineering</subject><subject>Environmental Management</subject><subject>Gravimetric analysis</subject><subject>Laboratories</subject><subject>Lactic acid</subject><subject>Mass distribution</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Original Article</subject><subject>Polyethylene terephthalate</subject><subject>Residues</subject><subject>Size exclusion chromatography</subject><subject>Waste Management/Waste 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co
-lactate) copolyesters, prepared by chemical modification of PET waste beverage bottles using
l
-lactic acid, under laboratory (bioreactor) and natural (Central Composting Plant in Brno, Czech Republic) composting conditions. The structure of solid residues after degradation was analyzed by IR, NMR, thermogravimetric (TGA) methods, and size exclusion chromatography in chloroform and the residues rich on aromatic units were analyzed in CHCl
3
/HFIP solutions. Sample with 57 mol% of aliphatic units showed the highest degree of degradation with mass loss of about 90% independently of composting conditions. The samples with 57 and 60 mol% of aromatic units reached 68 and 51% degradation in the compost pile and only 39 and 5% in laboratory bioreactor. Gravimetric analysis along with molar mass distribution measurement showed that laboratory-level composting study provides more consistent and defined results. However, it should be accompanied with tests performed under real conditions for the purpose of biodegradability evaluation of polymeric materials with varying composition.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><doi>10.1007/s10163-017-0595-3</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of material cycles and waste management, 2018, Vol.20 (1), p.414-420 |
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| source | SpringerLink Journals - AutoHoldings |
| subjects | Aliphatic compounds Biodegradability Biodegradation Bioreactors Chemical modification Chloroform Civil Engineering Composting Composts Degradation Engineering Environmental Management Gravimetric analysis Laboratories Lactic acid Mass distribution NMR Nuclear magnetic resonance Original Article Polyethylene terephthalate Residues Size exclusion chromatography Waste Management/Waste Technology |
| title | Degradation of pet copolyesters under real and laboratory composting conditions |
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