PBAT biodegradable mulch films: Study of ecotoxicological impacts using Allium cepa, Lactuca sativa and HepG2/C3A cell culture

Souza, Patrícia Moraes Sinohara; Sommaggio, Laís Roberta Deroldo; Marin-Morales, Maria Aparecida; Morales, Ana Rita

doi:10.1016/j.chemosphere.2020.126985

Cited by 57 publications

(31 citation statements)

References 41 publications

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“…PBAT is a commonly used polymer in agriculture, especially in the application of mulch films [ 17 , 18 , 19 ]. PBAT wastes are nontoxic when biodegraded in the soil, which conforms to the ecotoxicity requirement of the ASTM standard [ 20 , 21 ]. To reduce the UV photodegradation of PBAT, different additives have been studied, such as montmorillonite (MMT), carbon black, and SiO 2 [ 13 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 82%

Enhanced Photodegradation Stability in Poly(butylene adipate-co-terephthalate) Composites Using Organically Modified Layered Zinc Phenylphosphonate

Wang

Chen

et al. 2020

Polymers

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The enhancement of the ultraviolet (UV) photodegradation resistance of biodegradable polymers can improve their application efficacy in a natural environment. In this study, the hexadecylamine modified layered zinc phenylphosphonate (m-PPZn) was used as a UV protection additive for poly(butylene adipate-co-terephthalate) (PBAT) via solution mixing. The results from the Fourier transform infrared spectroscopy (FTIR) and wide-angle X-ray diffraction analysis of the m-PPZn indicated the occurrence of hexadecylamine intercalation. FTIR and gel permeation chromatography were used to characterize the evolution of the PBAT/m-PPZn composites after being artificially irradiated via a light source. The various functional groups produced via photodegradation were analyzed to illustrate the enhanced UV protection ability of m-PPZn in the composite materials. From the appearance, the yellowness index of the PBAT/m-PPZn composite materials was significantly lower than that of the pure PBAT matrix due to photodegradation. These results were confirmed by the molecular weight reduction in PBAT with increasing m-PPZn content, possibly due to the UV photon energy reflection by the m-PPZn. This study presents a novel approach of improving the UV photodegradation of a biodegradable polymer using an organically modified layered zinc phenylphosphonate composite.

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Section: Introductionmentioning

confidence: 82%

Enhanced Photodegradation Stability in Poly(butylene adipate-co-terephthalate) Composites Using Organically Modified Layered Zinc Phenylphosphonate

Wang

Chen

et al. 2020

Polymers

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“…This experiment followed a previous method with some modifications [ 45 ]. The soil was collected from the experimental farm of National Taiwan University and sieved through a 3 mm stainless steel sifting screen.…”

Section: Methodsmentioning

confidence: 99%

Biodegradation of PBSA Films by Elite Aspergillus Isolates and Farmland Soil

et al. 2022

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Plastic films are widely used in current agricultural practices; however, most mulch films used are discarded and buried in the land after harvest, having adverse environmental impacts. To solve this environmental problem, the demand for biodegradable mulch has been increasing in recent years. Polybutylene succinate-co-adipate (PBSA) is a biodegradable polymer with good ductility and can be used for packaging and mulching. In this study, we isolated two elite fungal strains for PBSA degradation from farmlands, i.e., Aspergillus fumigatus L30 and Aspergillus terreus HC, and the latter showed better degradation ability than the former. It is noteworthy that biodegradation of PBSA by A. terreus is reported for the first time, which revealed unique characteristics. In the soil burial test, even the soil with relatively poor degradation ability could be improved by the addition of elite fungal mycelia. In substrate specificity analyses of soil samples, PBSA could induce the synthesis of lipolytic enzymes of indigenous microbes to degrade substrates with medium and long carbon chains in soil. Furthermore, PBSA residues or fungal mycelia supplementation in soils had no adverse effect on the seed germination rate, seedling growth, or mature plant weight of the test green leafy vegetable. Taken together, the results of this study not only advance our understanding of the biodegradation of PBSA films by filamentous fungi but also provide insight into improving the efficiency of biodegradation in soil environments.

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“…However, the author did not report on the soil biodegradation of the same. [ 179 ] A typical timeline for testing biodegradation (according to ASTM, ISO standard) in industrial compost and soil is 3 months and 2 years, respectively. Abi‐Akl et al.…”

Section: Challenges and Opportunitiesmentioning

confidence: 99%

“…The authors have revealed the capability of biodegraders to dissociate the external boundary and to penetrate it to degrade its internal mechanical properties. [ 175,179 ] There is a data gap between the lab and the actual environment. In the laboratory environment, the variables are controlled and reproducible.…”

Section: Challenges and Opportunitiesmentioning

confidence: 99%

Synthetic Biopolymers and Their Composites: Advantages and Limitations—An Overview

Mtibe

Motloung

Bandyopadhyay

et al. 2021

Macromol. Rapid Commun.

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Recently, polymer science and engineering research has shifted toward the development of environmentally benign polymers to reduce the impact of plastic leakage on the ecosystems. Stringent regulations and concerns regarding conventional polymers are the main driving forces for the development of renewable, biodegradable, sustainable, and environmentally benign materials. Although biopolymers can alleviate plastic‐related pollution, several factors dictate the utilization of biopolymers. Herein, an overview of the potential and limitations of synthetic biopolymers and their composites in the context of environmentally benign materials for a sustainable future are presented. The synthetic biopolymer market, technical advancements for different applications, lifecycle analysis, and biodegradability are covered. The current trends, challenges, and opportunities for bioplastic recycling are also discussed. In summary, this review is expected to provide guidelines for future development related to synthetic biopolymer‐based sustainable polymeric materials suitable for various applications.

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PBAT biodegradable mulch films: Study of ecotoxicological impacts using Allium cepa, Lactuca sativa and HepG2/C3A cell culture

Cited by 57 publications

References 41 publications

Enhanced Photodegradation Stability in Poly(butylene adipate-co-terephthalate) Composites Using Organically Modified Layered Zinc Phenylphosphonate

Enhanced Photodegradation Stability in Poly(butylene adipate-co-terephthalate) Composites Using Organically Modified Layered Zinc Phenylphosphonate

Biodegradation of PBSA Films by Elite Aspergillus Isolates and Farmland Soil

Synthetic Biopolymers and Their Composites: Advantages and Limitations—An Overview

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