Effect of compatibilizig agent on the properties of polylactide and polylactide based composite during ozone exposure

Olewnik-Kruszkowska, Ewa; Nowaczyk, Jacek; Kadac, Kornelia

doi:10.1016/j.polymertesting.2017.04.009

Cited by 8 publications

(5 citation statements)

References 42 publications

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“…The PL5 software version v5.40 (Polymer Laboratories, Epsom, UK) was applied in an aim to establish the detailed information extracted from the DSC data. The degree of crystallinity ( X m ) was established by applying the following Equation (1) [ 28 , 29 ]:

where Δ H m is the measured heat of fusion of sample, Δ H 0 is the heat of fusion of a 100% crystalline polylactide and Δ H 0 = 109 mJ/mg, X PLA is the mass fraction of polylactide.…”

Section: Methodsmentioning

confidence: 99%

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

et al. 2021

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A series of new films with antibacterial properties has been obtained by means of solvent casting method. Biodegradable materials including polylactide (PLA), quercetin (Q) acting as an antibacterial compound and polyethylene glycol (PEG) acting as a plasticizer have been used in the process. The effect of quercetin as well as the amount of PEG on the structural, thermal, mechanical and antibacterial properties of the obtained materials has been determined. It was found that an addition of quercetin significantly influences thermal stability. It should be stressed that samples containing the studied flavonoid are characterized by a higher Young modulus and elongation at break than materials consisting only of PLA and PEG. Moreover, the introduction of 1% of quercetin grants antibacterial properties to the new materials. Recorded results showed that the amount of plasticizer did not influence the antibacterial properties; it does, however, cause changes in physicochemical properties of the obtained materials. These results prove that quercetin could be used as an antibacterial compound and simultaneously improve mechanical and thermal properties of polylactide-based films.

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where Δ H m is the measured heat of fusion of sample, Δ H 0 is the heat of fusion of a 100% crystalline polylactide and Δ H 0 = 109 mJ/mg, X PLA is the mass fraction of polylactide.…”

Section: Methodsmentioning

confidence: 99%

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

et al. 2021

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“…Oxidative degradation by ozone is another, albeit less common, chemical mechanism for the degradation of polymers. 108 Polymer chains which have been oxidised generally display increased hydrophilicity due to the incorporation of hydroxyl and carboxylic acid functional groups, aiding microbial attachment. Biofragmentation is the cleavage of polymers into oligomers, dimers or monomers by enzymes or free radicals generated by microorganisms.…”

Section: Mechanisms Of Biodegradationmentioning

confidence: 99%

Designing biodegradable alternatives to commodity polymers

Fiandra,

Shaw,

Starck

et al. 2023

Chem. Soc. Rev.

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“…Abiotic degradation by the action of ozone, as reported by Cataldo et al, resulted in a loss of original PVOH crystallinity, accelerating the biotic degradation process [ 74 ]. However, for PLA, an increase in crystallinity was reported by Olewnik-Kruszkowska et al, and the amorphous region was the most affected during ozone degradation [ 75 ]. Furthermore, changes in the polymer matrix surface due to ozone exposure were observed as an increase in the surface roughness [ 75 , 76 ].…”

Section: Abiotic and Biotic Polymer Degradation Mechanismsmentioning

confidence: 99%

“…However, for PLA, an increase in crystallinity was reported by Olewnik-Kruszkowska et al, and the amorphous region was the most affected during ozone degradation [ 75 ]. Furthermore, changes in the polymer matrix surface due to ozone exposure were observed as an increase in the surface roughness [ 75 , 76 ]. Roughness can be beneficial for biofilm formation during biotic degradation.…”

Section: Abiotic and Biotic Polymer Degradation Mechanismsmentioning

confidence: 99%

Biodegradation of Biodegradable Polymers in Mesophilic Aerobic Environments

Bher

Mayekar

Auras

et al. 2022

IJMS

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Finding alternatives to diminish plastic pollution has become one of the main challenges of modern life. A few alternatives have gained potential for a shift toward a more circular and sustainable relationship with plastics. Biodegradable polymers derived from bio- and fossil-based sources have emerged as one feasible alternative to overcome inconveniences associated with the use and disposal of non-biodegradable polymers. The biodegradation process depends on the environment’s factors, microorganisms and associated enzymes, and the polymer properties, resulting in a plethora of parameters that create a complex process whereby biodegradation times and rates can vary immensely. This review aims to provide a background and a comprehensive, systematic, and critical overview of this complex process with a special focus on the mesophilic range. Activity toward depolymerization by extracellular enzymes, biofilm effect on the dynamic of the degradation process, CO2 evolution evaluating the extent of biodegradation, and metabolic pathways are discussed. Remarks and perspectives for potential future research are provided with a focus on the current knowledge gaps if the goal is to minimize the persistence of plastics across environments. Innovative approaches such as the addition of specific compounds to trigger depolymerization under particular conditions, biostimulation, bioaugmentation, and the addition of natural and/or modified enzymes are state-of-the-art methods that need faster development. Furthermore, methods must be connected to standards and techniques that fully track the biodegradation process. More transdisciplinary research within areas of polymer chemistry/processing and microbiology/biochemistry is needed.

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Effect of compatibilizig agent on the properties of polylactide and polylactide based composite during ozone exposure

Cited by 8 publications

References 42 publications

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

Antibacterial Films Based on Polylactide with the Addition of Quercetin and Poly(Ethylene Glycol)

Designing biodegradable alternatives to commodity polymers

Biodegradation of Biodegradable Polymers in Mesophilic Aerobic Environments

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