Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)

With macroscopic litter and its degradation into secondary microplastic as a major source of environmental pollution, one key challenge is understanding the pathways from macro- to microplastic by abiotic and biotic environmental impact. So far, little is known about the impact of biota on material...

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Autores principales:	Teresa Menzel, Sebastian Weigert, Andreas Gagsteiger, Yannik Eich, Sebastian Sittl, Georg Papastavrou, Holger Ruckdäschel, Volker Altstädt, Birte Höcker
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polymer degradation microplastic nanoplastic PETase crack formation fatigue crack propagation resistance Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/06b2b232277c45f29f7dbd026f389f0a
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spelling	oai:doaj.org-article:06b2b232277c45f29f7dbd026f389f0a2021-11-25T18:47:56ZImpact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)10.3390/polym132238852073-4360https://doaj.org/article/06b2b232277c45f29f7dbd026f389f0a2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3885https://doaj.org/toc/2073-4360With macroscopic litter and its degradation into secondary microplastic as a major source of environmental pollution, one key challenge is understanding the pathways from macro- to microplastic by abiotic and biotic environmental impact. So far, little is known about the impact of biota on material properties. This study focuses on recycled, bottle-grade poly(ethylene terephthalate) (r-PET) and the degrading enzyme PETase from <i>Ideonella sakaiensis</i>. Compact tension (CT) specimens were incubated in an enzymatic solution and thermally and mechanically characterized. A time-dependent study up to 96 h revealed the formation of steadily growing colloidal structures. After 96 h incubation, high amounts of BHET dimer were found in a near-surface layer, affecting crack propagation and leading to faster material failure. The results of this pilot study show that enzymatic activity accelerates embrittlement and favors fragmentation. We conclude that PET-degrading enzymes must be viewed as a potentially relevant acceleration factor in macroplastic degradation.Teresa MenzelSebastian WeigertAndreas GagsteigerYannik EichSebastian SittlGeorg PapastavrouHolger RuckdäschelVolker AltstädtBirte HöckerMDPI AGarticlepolymer degradationmicroplasticnanoplasticPETasecrack formationfatigue crack propagation resistanceOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3885, p 3885 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polymer degradation microplastic nanoplastic PETase crack formation fatigue crack propagation resistance Organic chemistry QD241-441
spellingShingle	polymer degradation microplastic nanoplastic PETase crack formation fatigue crack propagation resistance Organic chemistry QD241-441 Teresa Menzel Sebastian Weigert Andreas Gagsteiger Yannik Eich Sebastian Sittl Georg Papastavrou Holger Ruckdäschel Volker Altstädt Birte Höcker Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
description	With macroscopic litter and its degradation into secondary microplastic as a major source of environmental pollution, one key challenge is understanding the pathways from macro- to microplastic by abiotic and biotic environmental impact. So far, little is known about the impact of biota on material properties. This study focuses on recycled, bottle-grade poly(ethylene terephthalate) (r-PET) and the degrading enzyme PETase from <i>Ideonella sakaiensis</i>. Compact tension (CT) specimens were incubated in an enzymatic solution and thermally and mechanically characterized. A time-dependent study up to 96 h revealed the formation of steadily growing colloidal structures. After 96 h incubation, high amounts of BHET dimer were found in a near-surface layer, affecting crack propagation and leading to faster material failure. The results of this pilot study show that enzymatic activity accelerates embrittlement and favors fragmentation. We conclude that PET-degrading enzymes must be viewed as a potentially relevant acceleration factor in macroplastic degradation.
format	article
author	Teresa Menzel Sebastian Weigert Andreas Gagsteiger Yannik Eich Sebastian Sittl Georg Papastavrou Holger Ruckdäschel Volker Altstädt Birte Höcker
author_facet	Teresa Menzel Sebastian Weigert Andreas Gagsteiger Yannik Eich Sebastian Sittl Georg Papastavrou Holger Ruckdäschel Volker Altstädt Birte Höcker
author_sort	Teresa Menzel
title	Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
title_short	Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
title_full	Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
title_fullStr	Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
title_full_unstemmed	Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
title_sort	impact of enzymatic degradation on the material properties of poly(ethylene terephthalate)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/06b2b232277c45f29f7dbd026f389f0a
work_keys_str_mv	AT teresamenzel impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT sebastianweigert impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT andreasgagsteiger impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT yannikeich impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT sebastiansittl impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT georgpapastavrou impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT holgerruckdaschel impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT volkeraltstadt impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate AT birtehocker impactofenzymaticdegradationonthematerialpropertiesofpolyethyleneterephthalate
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Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)

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