Nano-magnesium oxide reinforced polylactic acid biofilms for food packaging applications

Swaroop, Chetan; Shukla, Mukul

doi:10.1016/j.ijbiomac.2018.02.156

Cited by 195 publications

(90 citation statements)

References 25 publications

(50 reference statements)

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“…Poly(lactic acid) (PLA 4032D) with a density of 1.24 g/cm 3 and a melting point of 160°C was purchased from Nature Works LLC. High purity cellulose was obtained from commercial bags of hydrophilic cotton wool (99% of cellulose), in conformity with Official Pharmacopoeia.…”

Section: Experimental 21 Nanocomposite Preparationmentioning

confidence: 99%

Polylactic acid-lauryl functionalized nanocellulose nanocomposites: Microstructural, thermo-mechanical and gas transport properties

Rigotti¹,

Checchetto²,

Tarter³

et al. 2019

Express Polym. Lett.

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According to the European Bioplastics association, in 2017, the so-called bioplastics represented only 2.06 million tons of the 320 million tons of plastics produced annually [1]. The global production capacity is expected to increase up to 2.62 million tons in 2023. This growth is pushed by the demand of more sophisticated biopolymers, new applications and products. From packaging, agriculture, consumer electronics, textile to automotive, bioplastics are used in an increasing number of applications. In fact, biopolymers offer a number of additional advantages if compared to conventional plastics, such as a reduced carbon footprint and additional waste management options. Among bio-based and biodegradable plastics, polylactic acid (PLA) is one of the most interesting ones due to their good mechanical properties, good workability, excellent barrier properties. Therefore, it is a good candidate for the replacement of polystyrene (PS), polypropylene (PP), and acrylonitrile butadiene styrene (ABS) in many applications. However, PLA presents some weak points mainly represented by its low ductility, poor toughness, low glass transition temperature, high sensitivity to moisture and relatively low gas barrier, that limit its use in packaging applications [2, 3]. Indeed, the main

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Section: Experimental 21 Nanocomposite Preparationmentioning

confidence: 99%

Polylactic acid-lauryl functionalized nanocellulose nanocomposites: Microstructural, thermo-mechanical and gas transport properties

Rigotti¹,

Checchetto²,

Tarter³

et al. 2019

Express Polym. Lett.

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show abstract

“…Nevertheless, some drawbacks limit its use. Poor compressive strength and the generation of acidic products during degradation limit the range of its applications [1,2]. To overcome these flaws several composites of PLA are being developed, based on copolymerization, reinforcement with carbon fibers, carbon nanotubes, hydroxyapatite (HA) or metallic particles [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the manufacturing method provides these composites with different surface properties depending on the protocol followed [1,2,10,16,17].…”

Section: Introductionmentioning

confidence: 99%

Aging of Solvent-Casting PLA-Mg Hydrophobic Films: Impact on Bacterial Adhesion and Viability

et al. 2019

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Biomaterials used for the manufacture of biomedical devices must have suitable surface properties avoiding bacterial colonization and/or proliferation. Most biomaterial-related infections start during the surgery. Bacteria can begin colonization of the surface of a device right after implantation or in the next few hours. This time may also be sufficient to begin the deterioration of a biodegradable implant. This work explores the surface changes that hydrophobic films of poly(lactic) acid reinforced with Mg particles, prepared by solving-casting, undergone after in vitro degradation at different times. Hydrophobicity, surface tension, zeta potential, topography, and elemental composition were obtained from new and aged films. The initial degradation for 4 h was combined with unspecific bacterial adhesion and viability tests to check if degraded films are more or less susceptible to be contaminated. The degradation of the films decreases their hydrophobicity and causes the appearance of a biocompatible layer, composed mainly of magnesium phosphate. The release of Mg2+ is very acute at the beginning of the degradation process, and such positive charges may favor the electrostatic approach and attachment of Staphylococci. However, all bacteria attached on the films containing Mg particles appeared damaged, ensuring the bacteriostatic effect of these films, even after the first hours of their degradation.

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“…In addition to the metal oxides mentioned above, several other metal oxide and nonmetal oxide nanomaterials also showed an increased potential using as packaging materials, such as MgO-NPs, Fe 3 O 4 -NPs and iron-based nanoparticles, as well as SiO 2 -NPs [ 102 , 103 , 104 , 105 ].…”

Section: Inorganic and Metal Oxide Nanomaterials Applied In Food Pmentioning

confidence: 99%

Recent Developments in Food Packaging Based on Nanomaterials

et al. 2018

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The increasing demand for high food quality and safety, and concerns of environment sustainable development have been encouraging researchers in the food industry to exploit the robust and green biodegradable nanocomposites, which provide new opportunities and challenges for the development of nanomaterials in the food industry. This review paper aims at summarizing the recent three years of research findings on the new development of nanomaterials for food packaging. Two categories of nanomaterials (i.e., inorganic and organic) are included. The synthetic methods, physical and chemical properties, biological activity, and applications in food systems and safety assessments of each nanomaterial are presented. This review also highlights the possible mechanisms of antimicrobial activity against bacteria of certain active nanomaterials and their health concerns. It concludes with an outlook of the nanomaterials functionalized in food packaging.

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Nano-magnesium oxide reinforced polylactic acid biofilms for food packaging applications

Cited by 195 publications

References 25 publications

Polylactic acid-lauryl functionalized nanocellulose nanocomposites: Microstructural, thermo-mechanical and gas transport properties

Polylactic acid-lauryl functionalized nanocellulose nanocomposites: Microstructural, thermo-mechanical and gas transport properties

Aging of Solvent-Casting PLA-Mg Hydrophobic Films: Impact on Bacterial Adhesion and Viability

Recent Developments in Food Packaging Based on Nanomaterials

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