Enzymatic degradation behavior of self-degradable lipase-embedded aliphatic and aromatic polyesters and their blends

Over the past decade, the preparation of novel materials by enzyme-embedding into biopolyesters has been proposed as a straightforward method to produce self-degrading polymers. This paper reports the preparation and enzymatic degradation of extruded self-degradable films of three different biopolye...

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Bibliographic Details
Published in:Biomacromolecules
Main Authors: Peñas, Mario Ivan, Beloqui, Ana, Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon, Suttiruengwong, Supakij, Hernández Velasco, Rebeca, Müller, Alejandro Jesús
Other Authors: Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. POL - Polímers Industrials Avançats i Biopolímers Tecnològics
Format: Article in Journal/Newspaper
Language:English
Published: 2024
Subjects:
Àrees temàtiques de la UPC::Enginyeria química
Polymers > Biodegradation
Polyesters
Blends
Enzymatic degradation
Lipase
Self-degradable
Polímers > Biodegradació
Antarc*
Antarctica
Online Access:http://hdl.handle.net/2117/411666
https://doi.org/10.1021/acs.biomac.4c00161
Description
Summary:Over the past decade, the preparation of novel materials by enzyme-embedding into biopolyesters has been proposed as a straightforward method to produce self-degrading polymers. This paper reports the preparation and enzymatic degradation of extruded self-degradable films of three different biopolyesters: poly(lactic acid) (PLA), poly(butylene adipate-co-terephthalate) (PBAT), and poly(butylene succinate) (PBS), as well as three binary/ternary blends. Candida antarctica lipase B (CalB) has been employed for the enzyme-embedding procedure, and to the best of our knowledge, the use of this approach in biopolyester blends has not been reported before. The three homopolymers exhibited differentiated degradation and suggested a preferential attack of CalB on PBS films over PBAT and PLA. Moreover, the self-degradable films obtained from the blends showed slow degradation, probably due to the higher content in PLA and PBAT. These observations pave the way for exploring enzymes capable of degrading all blend components or an enzymatic mixture for blend degradation. Peer Reviewed Objectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables Postprint (published version)

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