Erick Gabriel Ribeiro dos Anjos, Tayra Rodrigues Brazil, Larissa Stieven Montagna, Guilherme Ferreira de Melo Morgado, Eduardo Ferreira Martins, Luiz Antonio Pessan, Francys Kley Vieira Moreira, Juliano Marini, Fabio Roberto Passador
{"title":"用于抗菌多功能包装的聚乳酸/PHBV/碳材料混合纳米复合材料的生物降解行为和生命周期评估","authors":"Erick Gabriel Ribeiro dos Anjos, Tayra Rodrigues Brazil, Larissa Stieven Montagna, Guilherme Ferreira de Melo Morgado, Eduardo Ferreira Martins, Luiz Antonio Pessan, Francys Kley Vieira Moreira, Juliano Marini, Fabio Roberto Passador","doi":"10.1007/s10924-024-03286-6","DOIUrl":null,"url":null,"abstract":"<div><p>Renewable multifunctional materials are crucial for advancing industries such as electronics and packaging. This study investigates the potential of graphene nanoplatelet (GNP) and multi-wall carbon nanotube (MWCNT) reinforcement in poly(lactic acid) (PLA)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blends for multifunctional packaging. Employing solvent-free techniques, we conducted a comprehensive analysis of morphological, thermal, mechanical, antimicrobial, and biodegradable properties. High-resolution scanning electron microscopy (FEG-SEM) was applied to evaluate the nanofiller morphologies and the immiscibility between PLA and PHBV, while differential scanning calorimetry (DSC) confirmed crystallinity changes induced by carbon nanomaterials. Mechanical tests demonstrated remarkable enhancements, notably a 30% increase in elastic modulus and 195% in ultimate tensile strength. Antimicrobial assays revealed exceptional effectiveness, especially in GNP-containing nanocomposites. Crucially, biodegradation tests highlighted compatibility with the blend. A Life Cycle Assessment (LCA) underscored significant eco-efficiency, minimizing harmful emissions. 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Biodegradation Behavior and Life Cycle Assessment of PLA/PHBV/Carbonaceous Materials Hybrid Nanocomposites for Antimicrobial Multifunctional Packaging
Renewable multifunctional materials are crucial for advancing industries such as electronics and packaging. This study investigates the potential of graphene nanoplatelet (GNP) and multi-wall carbon nanotube (MWCNT) reinforcement in poly(lactic acid) (PLA)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blends for multifunctional packaging. Employing solvent-free techniques, we conducted a comprehensive analysis of morphological, thermal, mechanical, antimicrobial, and biodegradable properties. High-resolution scanning electron microscopy (FEG-SEM) was applied to evaluate the nanofiller morphologies and the immiscibility between PLA and PHBV, while differential scanning calorimetry (DSC) confirmed crystallinity changes induced by carbon nanomaterials. Mechanical tests demonstrated remarkable enhancements, notably a 30% increase in elastic modulus and 195% in ultimate tensile strength. Antimicrobial assays revealed exceptional effectiveness, especially in GNP-containing nanocomposites. Crucially, biodegradation tests highlighted compatibility with the blend. A Life Cycle Assessment (LCA) underscored significant eco-efficiency, minimizing harmful emissions. These findings emphasize the potential of MWCNT, GNP-reinforced PLA/PHBV nanocomposites for diverse applications and as eco-friendly alternatives to conventional plastics.
期刊介绍：
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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