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Accelerated biodegradation testing of slowly degradable polyesters in soil

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dc.title Accelerated biodegradation testing of slowly degradable polyesters in soil en
dc.contributor.author Šerá, Jana
dc.contributor.author Serbruyns, Lynn
dc.contributor.author De Wilde, Bruno
dc.contributor.author Koutný, Marek
dc.relation.ispartof Polymer Degradation and Stability
dc.identifier.issn 0141-3910 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2020
utb.relation.volume 171
dc.type article
dc.language.iso en
dc.publisher Elsevier Ltd
dc.identifier.doi 10.1016/j.polymdegradstab.2019.109031
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0141391019303593
dc.subject PHA en
dc.subject PBS en
dc.subject PBAT/PLA en
dc.subject polyester network en
dc.subject DNA sequencing en
dc.subject accelerated biodegradation en
dc.description.abstract According to the impending EU regulations, all polymer products used in agriculture and applied into soil must be biodegradable to prevent their accumulation in the environment. However, some of these products must serve their purpose for months up to years before their degradation and mineralization is desirable. Current international standards describing the biodegradability in soil are more directed towards materials that undergo relatively fast biodegradation, which hampers the development and certification of slowly biodegrading polymeric materials. Here, an accelerated soil biodegradation test is proposed, where by increasing the incubation temperature from 25 °C to 37 °C, up to about 4-fold increase in the biodegradation rate is achieved. The polymers tested include TÜV AUSTRIA Belgium certified polyhydroxyalkanoate (PHA), polybutylene succinate (PBS), polybutylene adipate-terephthalate and polylactic acid blend (PBAT/PLA) and an experimental polyester network (ICL-PN). The biodegradation rates of the given polymers at the two temperatures was examined by carbon dioxide evolution. Independent testing was done in two independent laboratories and the results were compared. The biodegradation of the materials was further assessed by electron microscopy and the microbial community present was analyzed by next-generation sequencing. Criteria were proposed for the accelerated test method, which include that the polymers eligible for the accelerated test should not manifest any phase transition, like e.g. a glass transition, in the interval from 25 °C to 37 °C. The proposed accelerated test can be helpful in the development of polymeric materials with a functional life of several years and with ultimately quantitative biodegradability. © 2019 Elsevier Ltd en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1009466
utb.identifier.obdid 43881575
utb.identifier.scopus 2-s2.0-85075265975
utb.identifier.wok 000509622300013
utb.identifier.coden PDSTD
utb.source j-scopus
dc.date.accessioned 2019-12-20T12:39:21Z
dc.date.available 2019-12-20T12:39:21Z
dc.description.sponsorship ICL group, Israel
utb.contributor.internalauthor Šerá, Jana
utb.contributor.internalauthor Koutný, Marek
utb.fulltext.affiliation Jana Šerá a, Lynn Serbruyns b, Bruno De Wilde b, Marek Koutný a* a Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01, Zlín, Czech Republic b OWS Nv, Dok-Noord 5, 9000, Gent, Belgium * Corresponding author. E-mail address: mkoutny@utb.cz (M. Koutný).
utb.fulltext.dates Received 4 September 2019 Received in revised form 8 November 2019 Accepted 17 November 2019 Available online 18 November 2019
utb.fulltext.sponsorship The research has been funded by ICL group, Israel. BASF, MCPP and Danimer Scientific are kindly acknowledged for supply of sample material.
utb.wos.affiliation [Sera, Jana; Koutny, Marek] Tomas Bata Univ Zlin, Fac Technol, Dept Environm Protect Engn, Vavreckova 275, Zlin 76001, Czech Republic; [Serbruyns, Lynn; De Wilde, Bruno] OWS Nv, Dok Noord 5, B-9000 Ghent, Belgium
utb.scopus.affiliation Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, Zlín, 760 01, Czech Republic; OWS Nv, Dok-Noord 5, Gent, 9000, Belgium
utb.fulltext.faculty Faculty of Technology
utb.fulltext.faculty Faculty of Technology
utb.fulltext.ou Department of Environmental Protection Engineering
utb.fulltext.ou Department of Environmental Protection Engineering
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