Menzel_2021_Polymers.(Basel)_13_

Reference

Title : Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate) - Menzel_2021_Polymers.(Basel)_13_
Author(s) : Menzel T , Weigert S , Gagsteiger A , Eich Y , Sittl S , Papastavrou G , Ruckdaschel H , Altstadt V , Hocker B
Ref : Polymers (Basel) , 13 : , 2021
Abstract :

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 Ideonella sakaiensis. 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.

PubMedSearch : Menzel_2021_Polymers.(Basel)_13_
PubMedID: 34833184

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Citations formats

Menzel T, Weigert S, Gagsteiger A, Eich Y, Sittl S, Papastavrou G, Ruckdaschel H, Altstadt V, Hocker B (2021)
Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate)
Polymers (Basel) 13 :

Menzel T, Weigert S, Gagsteiger A, Eich Y, Sittl S, Papastavrou G, Ruckdaschel H, Altstadt V, Hocker B (2021)
Polymers (Basel) 13 :