Titre:	Accelerating the biodegradation of poly(lactic acid) through the inclusion of plant fibers : a review of recent advances
Auteur(s):	Momeni, Sina Craplewe, Kaylee Safder, Muhammad Luz, Sandra Maria da Sauvageau, Dominic Elias, Anastasia
metadata.dc.contributor.affiliation:	University of Alberta, Department of Chemical and Materials Engineering, Edmonton University of Alberta, Department of Chemical and Materials Engineering, Edmonton University of Alberta, Department of Chemical and Materials Engineering, Edmonton University of Brasília, Department of Automotive Engineering University of Alberta, Department of Chemical and Materials Engineering, Edmonton University of Alberta, Department of Chemical and Materials Engineering, Edmonton
Assunto::	Poli(ácido láctico) Fibras vegetais Biocompósitos Degradação Hidrólise
Date de publication:	10-oct-2023
Editeur:	American Chemical Society
Référence bibliographique:	MOMENI, Sina et al. Accelerating the biodegradation of poly(lactic acid) through the inclusion of plant fibers: a review of recent advances. ACS Sustainable Chemistry & Engineering, v. 11, 42, 15146–15170, 2023. DOI: https://doi.org/10.1021/acssuschemeng.3c04240.
Abstract:	As the global demand for plastics continues to grow, plastic waste is accumulating at an alarming rate with negative effects on the natural environment. The industrially compostable biopolymer poly(lactic acid) (PLA) is therefore being adopted for use in many applications, but the degradation of this material is slow under many end-of-life conditions. This Perspective explores the feasibility of accelerating the degradation of PLA through the formation of PLA-plant fiber composites. Topics include: (a) key properties of PLA, plant-based fibers, and biocomposites; (b) mechanisms of both hydrolytic degradation and biodegradation of PLA-fiber composites; (c) end-of-life degradation of PLA and PLA-plant fiber composites in aerobic and anaerobic conditions, relevant to compost, soil and seawater (aerobic), and landfills (anaerobic); and (d) sustainability and environmental impact of PLA and PLA-plant fiber composites, as evaluated using life cycle assessment. Additional degradation modes, including thermal and photodegradation, which are relevant during processing and use, have been omitted for clarity, as have other types of PLA biocomposites. Multiple studies have shown that the addition of some types of plant fibers to PLA (to form PLA biocomposites) accelerates both water transport in the material and hydrolysis, presenting a possible avenue for improving the end-of-life degradation of these materials. To facilitate the continued development of materials with enhanced biodegradability, we identify a need to implement testing protocols that can distinguish between different degradation mechanisms.
DOI:	https://doi.org/10.1021/acssuschemeng.3c04240
metadata.dc.relation.publisherversion:	https://pubs.acs.org/doi/10.1021/acssuschemeng.3c04240?ref=PDF
Collection(s) :	Artigos publicados em periódicos e afins

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