Compostability of Co-Extruded Starch/Poly(Lactic Acid) Polymeric Material Degradation in an Activated Inert Solid Medium
The aim of this work was to estimate the biodegradation of a co-extruded starch/poly(lactic acid) polymeric material using a vermiculite based inert solid medium which could simulate compost medium and enable us to achieve complete carbon balances. At the end of the test the mineralisation rate was...
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| Veröffentlicht in: | Materials 2009-09, Vol.2 (3), p.749-764 |
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| creator | Copinet, Alain Legin-Copinet, Estelle Erre, Damien |
| description | The aim of this work was to estimate the biodegradation of a co-extruded starch/poly(lactic acid) polymeric material using a vermiculite based inert solid medium which could simulate compost medium and enable us to achieve complete carbon balances. At the end of the test the mineralisation rate was compared to those obtained for co-extruded starch/poly(lactic acid) polymeric material degradation in compost. It was shown that the mineralisation rate after 45 days of degradation was similar in activated vermiculite medium to the one in compost. A protocol for both extraction and quantification of the carbon included in the different degradation by-products was proposed and the carbon balance of the polymer degradation was followed during the test with a satisfactory accuracy. As the non-degraded PLA and starch material had been retrieved during the test, the evolution of the glass transition temperature and the molecular weight of PLA could be followed. A two-step degradation mechanism was highlighted in inert solid medium, showing the fundamental role of abiotic reactions for PLA degradation in compost. |
| doi_str_mv | 10.3390/ma2030749 |
| format | Article |
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At the end of the test the mineralisation rate was compared to those obtained for co-extruded starch/poly(lactic acid) polymeric material degradation in compost. It was shown that the mineralisation rate after 45 days of degradation was similar in activated vermiculite medium to the one in compost. A protocol for both extraction and quantification of the carbon included in the different degradation by-products was proposed and the carbon balance of the polymer degradation was followed during the test with a satisfactory accuracy. As the non-degraded PLA and starch material had been retrieved during the test, the evolution of the glass transition temperature and the molecular weight of PLA could be followed. A two-step degradation mechanism was highlighted in inert solid medium, showing the fundamental role of abiotic reactions for PLA degradation in compost.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma2030749</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Acids ; Automation ; Biodegradation ; By products ; Carbon dioxide ; Gas flow ; Heat ; Humidity ; Mineralization ; Polymers</subject><ispartof>Materials, 2009-09, Vol.2 (3), p.749-764</ispartof><rights>Copyright MDPI AG 2009</rights><rights>2009 by the authors. 2009</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c347t-7a4b51bd3ae3e2440dfea6c66f0bb85afbbb8c7600821f72883e8b04784220d83</citedby><cites>FETCH-LOGICAL-c347t-7a4b51bd3ae3e2440dfea6c66f0bb85afbbb8c7600821f72883e8b04784220d83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5445754/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5445754/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,53791,53793</link.rule.ids></links><search><creatorcontrib>Copinet, Alain</creatorcontrib><creatorcontrib>Legin-Copinet, Estelle</creatorcontrib><creatorcontrib>Erre, Damien</creatorcontrib><title>Compostability of Co-Extruded Starch/Poly(Lactic Acid) Polymeric Material Degradation in an Activated Inert Solid Medium</title><title>Materials</title><description>The aim of this work was to estimate the biodegradation of a co-extruded starch/poly(lactic acid) polymeric material using a vermiculite based inert solid medium which could simulate compost medium and enable us to achieve complete carbon balances. At the end of the test the mineralisation rate was compared to those obtained for co-extruded starch/poly(lactic acid) polymeric material degradation in compost. It was shown that the mineralisation rate after 45 days of degradation was similar in activated vermiculite medium to the one in compost. A protocol for both extraction and quantification of the carbon included in the different degradation by-products was proposed and the carbon balance of the polymer degradation was followed during the test with a satisfactory accuracy. As the non-degraded PLA and starch material had been retrieved during the test, the evolution of the glass transition temperature and the molecular weight of PLA could be followed. A two-step degradation mechanism was highlighted in inert solid medium, showing the fundamental role of abiotic reactions for PLA degradation in compost.</description><subject>Acids</subject><subject>Automation</subject><subject>Biodegradation</subject><subject>By products</subject><subject>Carbon dioxide</subject><subject>Gas flow</subject><subject>Heat</subject><subject>Humidity</subject><subject>Mineralization</subject><subject>Polymers</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpVUdFqwjAULWODifNhfxDYy3zoTJu0aV8G4twmKBu4PYfbJNVI27g0Ff37RRTZ7su5957DORduENxH-ImQHI9qiDHBjOZXQS_K8zSMckqv__S3waBtN9gXIVEW571gPzH11rQOCl1pd0CmRBMTTvfOdlJJtHRgxXr0aarD4xyE0wKNhZZDdNzUyvp5Ac4jVOhFrSxIcNo0SDcIGi91eudpiWaNsg4tTaUlWiipu_ouuCmhatXgjP3g-3X6NXkP5x9vs8l4HgpCmQsZ0CKJCklAERVTimWpIBVpWuKiyBIoCw-CpRhncVSyOMuIygpMWUbjGMuM9IPnk--2K2olhWqchYpvra7BHrgBzf8zjV7zldnxhNKEJdQbPJwNrPnpVOv4xnS28TfzKPF5jMSYedXwpBLWtK1V5SUhwvz4HH55DvkFZIyDOQ</recordid><startdate>20090901</startdate><enddate>20090901</enddate><creator>Copinet, Alain</creator><creator>Legin-Copinet, Estelle</creator><creator>Erre, Damien</creator><general>MDPI AG</general><general>Molecular Diversity Preservation International</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>5PM</scope></search><sort><creationdate>20090901</creationdate><title>Compostability of Co-Extruded Starch/Poly(Lactic Acid) Polymeric Material Degradation in an Activated Inert Solid Medium</title><author>Copinet, Alain ; 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At the end of the test the mineralisation rate was compared to those obtained for co-extruded starch/poly(lactic acid) polymeric material degradation in compost. It was shown that the mineralisation rate after 45 days of degradation was similar in activated vermiculite medium to the one in compost. A protocol for both extraction and quantification of the carbon included in the different degradation by-products was proposed and the carbon balance of the polymer degradation was followed during the test with a satisfactory accuracy. As the non-degraded PLA and starch material had been retrieved during the test, the evolution of the glass transition temperature and the molecular weight of PLA could be followed. A two-step degradation mechanism was highlighted in inert solid medium, showing the fundamental role of abiotic reactions for PLA degradation in compost.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/ma2030749</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1996-1944 |
| ispartof | Materials, 2009-09, Vol.2 (3), p.749-764 |
| issn | 1996-1944 1996-1944 |
| language | eng |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Acids Automation Biodegradation By products Carbon dioxide Gas flow Heat Humidity Mineralization Polymers |
| title | Compostability of Co-Extruded Starch/Poly(Lactic Acid) Polymeric Material Degradation in an Activated Inert Solid Medium |
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