Photo-catalytic and biotic degradation of polystyrene packaging film: Effect of zinc oxide photocatalyst nanoparticles and nanoclay

Fakhri, Leila Abolghasemi; Ghanbarzadeh, Babak; Dehghannya, Jalal; Hosseini, Mohammadyar; Dadashi, Saeed

doi:10.1016/j.chemosphere.2021.130972

Cited by 15 publications

(9 citation statements)

References 58 publications

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“…This film showed enhanced vapor barrier characteristics and UV-blocking properties . The incorporation of ZnO NPs into the polymer matrix increased the crystallinity of the film. , It has also been reported that incorporating ZnO NPs into polystyrene film improves the biodegradability of the film by 2.1% . In a study, ZnO NPs loaded with gallic acid were incorporated into chitosan film, which showed a decrease in light barrier properties and water vapor permeability …”

Section: Introductionmentioning

confidence: 90%

“…65,66 It has also been reported that incorporating ZnO NPs into polystyrene film improves the biodegradability of the film by 2.1%. 67 In a study, ZnO NPs loaded with gallic acid were incorporated into chitosan film, which showed a decrease in light barrier properties and water vapor permeability. 58 We discussed that ZnO NPs are GRAS materials that can act as a nanofiller to reinforce the mechanical and barrier properties of BPs and display potent antimicrobial, antiviral, and antioxidant properties, and enhance the shelf life of foodstuffs.…”

Section: Introductionmentioning

confidence: 99%

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Emerging Trends for ZnO Nanoparticles and Their Applications in Food Packaging

Zare

Namratha

Ilyas

et al. 2022

ACS Food Sci. Technol.

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Zinc oxide (ZnO) nanoparticles (NPs), which are declared as generally recognized as safe by the U.S. Food and Drug Administration, is discussed in this review to reveal their beneficial characteristics when incorporated into packaging matrixes for food packaging and preservation applications. Some of the major challenges in conventional packaging include microbial contamination, oxidation, moisture, gas, and UV transmission into the food, and lack of mechanical strength. These factors lead to poor shelf life, affect food quality, and cause food wastage. Advancement in packaging has shifted the focus toward nanotechnology. Nanotechnology is oriented toward the fabrication and application of materials with nanosized dimensions. Among various nanomaterials, current research has focused on ZnO NPs due to their properties and future applications. Incorporation of ZnO NPs into biopolymer packaging materials considerably enhanced the antimicrobial activity against foodborne pathogens and prolonged the shelf life of foodstuffs by a Trojan-horse strategy and reactive oxygen mechanism. Besides antimicrobial activity, ZnO NPs allow improvement of the antioxidant activity of the packaging materials by limiting the presence of oxygen in the headspace. Comprehensive ZnO nanocomposite (NC) biopolymer (BP) packaging features and their significance for food packaging applications are presented in this review. Furthermore, it discusses the effect of ZnO NPs on mechanical strength and barrier properties such as water vapor permeability, oxygen transmission rate, and UV transmission across the packaging material.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Emerging Trends for ZnO Nanoparticles and Their Applications in Food Packaging

Zare

Namratha

Ilyas

et al. 2022

ACS Food Sci. Technol.

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“…The UV absorption was thought to be the catalyst for the initiation of PSB's photo-oxidative degradation. Various internal chromophoric impurities, included the followings [28,29]: 1) Styrene and butadiene monomer was polymerized by the reaction of oxygen with PSB developing radicals, resulting in the formation of peroxide groups.…”

Section: Study Of Photo-degradation Of Poly (Styrene-cobutadiene) By ...mentioning

confidence: 99%

“…In addition, there was also an inverse correlation between deterioration degree (α) and MV, which has been expressed by Equation (2) where m represents initial molecular weight of poly(styrene-co-butadiene). Thus, the α value could provide an indication for breaking the weak bonds distributed randomly within polymer backbone [28][38]: α=m.S/MV…”

Section: Study the Photo-degradation Of Poly (Styrene-cobutadiene) By...mentioning

confidence: 99%

Untitled

2023

J. Med. Chem. Sci.

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Two kind of Schiff bases (A1-A3) and (B1-B3) containing a benzothiazole moiety have been synthesized, description by (FT-IR and 1 HNMR, 13 CNMR) and used as photo stabilizers for poly (styrene-co-butadiene) at low concentrations. The first type (A1-A3) was created by reacting 4-methoxy cinnamic acid with thionylchloride to produce 3-Chloro-1-benzothiophene-2-carbonyl-chloride and after that, it was reacted with hydrazine to give 3-chloro-6methoxybenzo[b]thiophene-2-carbohydrazide (A). In contrast, the Schiff bases compounds (B1-B3) were synthesized by reacting 3,4-(methyenedioxy) cinnamic acid with thionyl chloride to produce 7-chlorothieno [2',3':4,5]benzo[1,2d][1,3]dioxole-6carbonyl chloride, and then it was reacted with hydrazine to produce 7-chlorothieno[2',3':4,5]benzo[1,2-d][1,3]dioxole-6-carbohydrazide (B). Several methods were used to evaluate the effectiveness of Schiff bases as photo stabilizers on poly (styrene-co-butadiene). For instance, the changes in infrared and ultraviolet spectra, chain scission, molecular weight, and quantum yield upon exposure to the UV light were observed. All of the additives applied significantly slowed down photo-degradation of poly (styrene-co-butadiene).

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“…The results show that the heavily degraded OXO-PE unknown exhibits an onset of weight loss at significantly lower temperatures than PE and undegraded OXO-PE; however, the overall degradation in weight remains comparable, confirming the absence of significant inorganic fillers. The T 50% decomposition temperature at which 50% weight loss occurs is an important indicator when it comes to evaluating a polymer's thermal stability due to the significant loss of properties caused by polymer chains oxidation and chain scission [55,56]. The displacement of the degradation curve obtained in the OXO-PE unknown indicated that the degraded polymer is much less stable and begins to react at significantly lower temperatures than chemically undamaged polymers.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Synergistic Adsorption of Organic Pollutants on Weathered Polyethylene Microplastics

et al. 2022

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Microplastics (MPs) are persistent tiny pieces of plastic material in the environment that are capable of adsorbing environmental organic pollutants from their surroundings. The interaction of MPs with organic pollutants alters their environmental behavior, i.e., their adsorption, degradation and toxicity, etc. Polyethylene (PE) is the most widely used plastic material. The environmental weathering of PE results in changes to its surface chemistry, making the polymer a much better vector for organic pollutants than virgin PE. In this study, a laboratory-accelerated weathering experiment was carried out with a virgin PE film and an oxidatively degradable PE (OXO-PE) film, i.e., PE modified by the addition of a pro-oxidant catalyst. The degradation of PE and OXO-PE was assessed through Fourier transform infra-red (FTIR) spectroscopy and their wettability was measured by contact angle (CA) measurements. Their thermal properties and morphology were studied using thermogravimetric analyses (TGA) and scanning electron microscopy (SEM), respectively. Further, the adsorption of two model organic pollutants onto weathered and virgin PE was analyzed. Triclosan (TCS) and methylparaben (MeP) were chosen as model organic pollutants for the adsorption experiment due to their frequent use in the cosmetics industry, their uncontrolled release into the environment and their toxicity. The adsorption of both model pollutants onto PE and OXO-PE MP was analyzed by using gas chromatography with a flame ionization detector (GC-FID). The adsorption of MeP onto OXO-PE was higher than onto PE MPs. However, TCS showed insignificant adsorption onto PE and OXO-PE. When both pollutants were present simultaneously, the adsorption of TCS onto both PE and OXO-PE was significantly influenced by the presence of MeP. This result demonstrates that the adsorption behavior of one pollutant can be significantly altered by the presence of another pollutant. Both the effect of weathering on the adsorption of organic pollutants as well as the interaction between organic pollutants adsorbing onto MPs is highly relevant to actual MP pollution in the environment, where MPs are exposed to weathering conditions and mixtures of organic pollutants.

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Photo-catalytic and biotic degradation of polystyrene packaging film: Effect of zinc oxide photocatalyst nanoparticles and nanoclay

Cited by 15 publications

References 58 publications

Emerging Trends for ZnO Nanoparticles and Their Applications in Food Packaging

Emerging Trends for ZnO Nanoparticles and Their Applications in Food Packaging

Untitled

Synergistic Adsorption of Organic Pollutants on Weathered Polyethylene Microplastics

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