Testing a coated PE-based mono-material for food packaging applications: an in-depth performance comparison with conventional multi-layer configurations

Carullo, Daniele; Casson, Andrea; Rovera, Cesare; Ghaani, Masoud; Bellesia, Tommaso; Guidetti, R.; Farris, Stefano

doi:10.1016/j.fpsl.2023.101143

Cited by 6 publications

(4 citation statements)

References 43 publications

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“…It could still match low-density polyethylene and cannot suddenly break due to an external force to avoid catastrophic damage. 57 The improved water contact angle of the QSCC 1/7 (20) bioplastic also confirmed more hydrophobic phases on its surface (Figure 5C). The high humidity environment caused the QSCC 1/7 (20) surface to polarize but remain in the hydrophobic stage (94.19 ± 2.18°).…”

Section: ■ Introductionmentioning

confidence: 71%

“…The tensile strength of QSCC 1/7(20) deteriorated to 6.09 MPa after treatment at 75% RH for 48 h (Figure B). It could still match low-density polyethylene and cannot suddenly break due to an external force to avoid catastrophic damage . The improved water contact angle of the QSCC 1/7(20) bioplastic also confirmed more hydrophobic phases on its surface (Figure C).…”

Section: Resultsmentioning

confidence: 99%

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Dynamically Electrostatic Regulated Intermolecular Cross-Linking for Preparing High-Tough Recyclable Disposable Bioplastic with Rapid Sterilization

Bi,

Luo,

Zhang

et al. 2024

ACS Sustainable Chem. Eng.

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Natural polysaccharide bioplastics are a promising alternative for nondegradable food packaging; however, some properties cannot be fully matched by petrochemical plastics. Herein, a biodegradable, eco-friendly bioplastic is constructed through dynamic electrostatic induct intermolecular cross-linking. By entropy initiation and electrostatic self-assembly, the protonated chitosan (CC) can be tightly bound to the polyelectrolyte complex (QS) composed of the quaternary ammonium chitosan and sodium alginate, further inducing crystallization through hydrogen bonds, resulting in the tensile strength and toughness of natural polysaccharide bioplastic (QSCC 1/7(20) ) being 5.4 and 13.4 times that of QS, respectively. Concurrently, the water resistance and gas barrier properties are also remarkably elevated. Due to the synergistic antibacterial activity of −NH 3 + and −N + (CH 3 ) 3 groups, the QSCC 1/7(20) achieves 3 h rapid sterilization (≥95%) and at least 5 day long-term bacteriostasis (≥99%), leading to foldable QSCC 1/7(20) that can effectively keep perishable fruit fresh for 8 and 7 days in static and dynamic situations, respectively. Furthermore, QSCC 1/7(20) can be recycled by low-carbon and waterassistance sustainable processes. Therefore, this work offers a prospective way to substitute petrochemical plastic packaging.

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Section: ■ Introductionmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Dynamically Electrostatic Regulated Intermolecular Cross-Linking for Preparing High-Tough Recyclable Disposable Bioplastic with Rapid Sterilization

Bi,

Luo,

Zhang

et al. 2024

ACS Sustainable Chem. Eng.

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“…The mechanical properties of the coated PE composite films were measured by a universal material testing machine (E63, MTS, USA) followed by the method of ASTM D882. 23 The samples (15 Â 150 mm 2 of width Â length) were conditioned at RH 50% and RH 90% for 36 h before testing. All the mechanical tests were carried out at 50% RH and ambient temperature.…”

Section: Characterizationmentioning

confidence: 99%

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

Fu,

Wang,

Huang

et al. 2024

J of Applied Polymer Sci

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The limited oxygen barrier of polyethylene (PE) films has restricted their further application in food packaging, like emergency foods. Although its oxygen barrier property can be improved by applying a polyvinyl alcohol (PVA) coating, the application of PVA/PE composite films in high‐humidity environments is still challenging. Hence, this study aimed to enhance the oxygen barrier properties of PVA/PE composite films in high‐humidity environments. Specifically, PVA coatings were modified by the itaconic acid (IA) and magnesium‐aluminum layered double hydroxides (LDH), and then applied to PE films as bilayer coating. Because of the unique bilayer coating on the PE surface, the oxygen barrier property of PVA/PE composite film (IA/LDH‐p) in high‐humidity environments has been further improved. The results confirmed that IA/LDH‐p had an oxygen permeability coefficient of 1.92 ± 0.16 × 10−16 cm3 cm/(cm2 s Pa) under a high‐humidity environment test, 82.42% better than that of single‐layer coating coated on PE surface. After being stored at RH 90% for 36 h, the tensile strength and elongation at break values of IA/LDH‐p were 27.20 MPa and 919.63%, respectively. Overall, this obtained PVA/PE composite films showed great potential for application in emergency foods packaging, particularly in high‐humidity environments.

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“…According to the 2022 OECD Global Plastic Outlook [1], about 22% of all plastic waste worldwide ends up in landfills or as litter, causing significant harm to land and marine environments. Biodegradable polymers are a viable alternative to conventional plastics from a sustainability and circular economy perspective [2]; however, their performance needs to be enhanced to meet the needs of the market, especially in those sectors where plastic consumption is very high [3].…”

Section: Introductionmentioning

confidence: 99%

High-Barrier, Biodegradable Films with Polyvinyl Alcohol/Polylactic Acid + Wax Double Coatings: Influence of Relative Humidity on Transport Properties and Suitability for Modified Atmosphere Packaging Applications

Barbato,

Apicella,

Malvano

et al. 2023

Polymers

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Polyvinyl alcohol (PVOH) exhibits outstanding gas-barrier properties, which favor its use as a biodegradable, high-barrier coating on food-packaging films, possibly in combination with modified atmospheres. Nonetheless, its high sensitivity to water can result in a severe loss of barrier properties, significantly limiting its applications with fresh foods and in high-humidity conditions. In this work, the water vapor (PWV) and oxygen permeability (PO2) of high-barrier biodegradable films with PVOH/PLA + wax double coatings were extensively characterized in a wide range of relative humidity (from 30 to 90%), aimed at understanding the extent of the interaction of water with the wax and the polymer matrices and the impact of this on the permeation process. What is more, a mathematical model was applied to the PWV data set in order to assess its potential to predict the permeability of the multilayer films by varying storage/working relative humidity (RH) conditions. The carbon dioxide permeability (PCO2) of the films was further evaluated, and the corresponding permselectivity values were calculated. The study was finally augmented through modified atmosphere packaging (MAP) tests, which were carried out on double-coated films loaded with 0 and 5% wax, and UV-Vis analyses. The results pointed out the efficacy of the PLA + wax coating layer in hampering the permeation of water molecules, thus reducing PVOH swelling, as well as the UV-shielding ability of the multilayer structures. Moreover, the MAP tests underlined the suitability of the double-coated films for being used as a sustainable alternative for the preservation of foods under modified atmospheres.

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Testing a coated PE-based mono-material for food packaging applications: an in-depth performance comparison with conventional multi-layer configurations

Cited by 6 publications

References 43 publications

Dynamically Electrostatic Regulated Intermolecular Cross-Linking for Preparing High-Tough Recyclable Disposable Bioplastic with Rapid Sterilization

Dynamically Electrostatic Regulated Intermolecular Cross-Linking for Preparing High-Tough Recyclable Disposable Bioplastic with Rapid Sterilization

High oxygen barrier property of polyethylene composite films with bilayer polyvinyl alcohol coating for emergency foods in high‐humidity environments

High-Barrier, Biodegradable Films with Polyvinyl Alcohol/Polylactic Acid + Wax Double Coatings: Influence of Relative Humidity on Transport Properties and Suitability for Modified Atmosphere Packaging Applications

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