Improved mechanical and antibacterial properties of active LDPE films prepared with combination of Ag, ZnO and CuO nanoparticles

Dehghani, Samira; Peighambardoust, Seyed Hadi; Peighambardoust, Seyed Jamaleddin; Hosseini, Seyed Vali; Regenstein, Joe M.

doi:10.1016/j.fpsl.2019.100391

Cited by 80 publications

(39 citation statements)

References 36 publications

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“…This value turns out to be low when compared to some conventional synthetic polymers that show strengths around 22 and 30 MPa, as in the case of hight density polyethylene (HDPE) and polypropylene (PP), respectively [ 34 ]. However, it has an interesting behavior when compared to materials such as low density polyethylene (LDPE), for which there had been reported values from 5 MPa [ 35 ] and some bio-based polymers such as thermoplastic starch that reaches values between 0.23 and 5.5 MPa [ 31 ]. On the other hand, it is important to consider that the mechanical properties can be increased with the use of reinforcing materials such as natural fibers, in this case, those of fique.…”

Section: Resultsmentioning

confidence: 99%

Effect of Fique Fibers in the Behavior of a New Biobased Composite from Renewable Mopa-Mopa Resin

et al. 2020

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A fully biobased composite was developed using a natural resin from the Elaeagia Pastoensis Mora plant, known as Mopa-Mopa reinforced with fique fibers. Resin extraction was through solvent processing reaching an efficient extraction process of 92% and obtaining a material that acted as a matrix without using any supplementary chemical modifications as it occurs with most of the biobased resins. This material was processed by the conventional transform method (hot compression molding) to form the plates from which the test specimens were extracted. From physicochemical and mechanical characterization, it was found that the resin had obtained a tensile strength of 15 MPa that increased to values of 30 MPa with the addition of 20% of the fibers with alkalization treatment. This behavior indicated a favorable condition of the fiber-matrix interface in the material. Similarly, the evaluation of the moisture adsorption in the components of the composite demonstrated that such adsorption was mainly promoted by the presence of the fibers and had a negative effect on a plasticization phenomenon from humidity that reduced the mechanical properties for all the controlled humidities (47%, 77% and 97%). Finally, due to its physicochemical and mechanical behavior, this new biobased composite is capable of being used in applications such as wood–plastic (WPCs) to replace plastic and/or natural wood products that are widely used today.

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Section: Resultsmentioning

confidence: 99%

Effect of Fique Fibers in the Behavior of a New Biobased Composite from Renewable Mopa-Mopa Resin

et al. 2020

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“…Besides, nano‐fillers can be regarded as carriers of active ingredients, such as bactericide and antioxidant substances in preserving the quality of food (Dehghan‐Manshadi, Peighambardoust, Azadmard‐Damirchi, & Niakousari, 2019, 2020). Currently, different NPs including Ag, nanoclays, ZnO, TiO 2 , SiO 2 , nanotubes of carbon, cellulose nano‐whiskers, and starch nanocrystals are used as nano‐fillers to improve the properties of packaging materials (Dehghani, Peighambardoust, Peighambardoust, Hosseini, & Regenstein, 2019; Manjunath et al., 2018; Nottagh, Hesari, Peighambardoust, Rezaei‐Mokarram, & Jafarizadeh‐Malmiri, 2018, 2019; S. H. Peighambardoust, Beigmohammadi, & Peighambardoust, 2016; Thangavel & Thiruvengadam, 2014; Yao et al., 2011). In previous studies, we investigated various properties of carboxymethyl cellulose cell (CMC)‐based (Ebrahimi, Peighambardoust, Peighambardoust, & Zahed‐Karkaj, 2019) and starch‐based (S. J. Peighambardoust, Peighambardoust, Pournasir, & Mohammadzadeh‐Pakdel, 2019) bio‐nanocomposites containing either individual or combination of silver (Ag), zinc oxide, and copper oxide particles.…”

Section: Introductionmentioning

confidence: 99%

“…It is necessary to keep Ag NPs concentration in food packaging materials as low as possible. The direct incorporation of metallic NPs into bio‐nanocomposite films would have health risks due to their toxicity to eukaryotic cells and their possible migration from food package to the food product (Dehghani et al., 2019). Surface modification or functionalization of inorganic NPs such as TiO 2 and SiO 2 is a strategy to improve several characteristics of bio‐nanocomposite matrix: (a) antimicrobial properties; (b) physical stability and dispersion of NPs; (c) Ag level, which is lower than that of Ag individually added, making modified NPs less toxic (Zienkiewicz‐Strzałka, Deryło‐Marczewska, & Kozakevych, 2018).…”

Section: Introductionmentioning

confidence: 99%

Physical, mechanical, and antibacterial characteristics of bio‐nanocomposite films loaded with Ag‐modified SiO₂ and TiO₂ nanoparticles

Hajizadeh

Peighambardoust

Peressini

2020

Journal of Food Science

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In this study, starch-based films incorporating metal oxide (MO 2 ) nanoparticles (NPs) of TiO 2 and SiO 2 (at a concentration of 1 to 4 wt. %) were produced by solution casting method. In order to exhibit antimicrobial properties, MO 2 NPs were modified by synthesizing silver (Ag) ions over the NPs using cationic adsorption method. Ag ions were then reduced to metallic Ag by sodium borohydride solution. Scanning electron microscopy showed a smooth surface for the pure starch film. Incorporating MO 2 @Ag NPs in the films increased surface roughness with agglomerated NPs within starch matrix. Energy dispersive X-ray analysis exhibited a uniform dispersion of Ag-loaded MO 2 NPs, which increases surface contact between these NPs and the biopolymer matrix leading to improved physical and mechanical properties of the resulting films. With increasing in the NPs concentrations, the tensile strength and elongation at break % of the films increased and decreased, respectively. Incorporating MO 2 @Ag NPs into starch matrix decreased solubility in water and water vapor permeability of the obtained films, and significantly inhibited the growth of Escherichia coli and Staphylococcus aureus. The most antibacterial effect was obtained for the films containing higher weight concentrations of Ag-loaded SiO 2 -NPs.

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“…During the last decade, biopolymer–clay nanocomposites (Rhim, Park, & Ha, ; Youssef & El‐Sayed, ) received significant attention as being an alternative to food active packaging films (Dehghani, Peighambardoust, Peighambardoust, Hosseini, & Regenstein, ; Fasihnia, Peighambardoust, Peighambardoust, & Oromiehie, ). The main reason for this fact was because such materials could disperse into nanoscale and exhibit improved antimicrobial, mechanical, and barrier properties.…”

Section: Introductionmentioning

confidence: 99%

The effect of different preparation methods on the development of chitosan/thyme oil/montmorillonite nanocomposite active packaging films

Giannakas

Stathopoulou

Tsiamis

et al. 2019

J Food Process Preserv

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The globally increasing needs for food quantity and quality led industries to invest in packaging methods that enhance the shelf life and quality of foods. Also, the effort to avoid the use of petrochemical or chemical derivatives in the production‐chain increased the exploitation of by‐products and biomass. In this work, the raw materials such as montmorillonite (Mt), the chitosan (CS) which is a sea‐food byproduct, and the natural essential oil extract thyme oil (TO) were combined via two different methods for the development of an advanced nanocomposite active packaging film for foods. In the first method, the so‐called “Solution‐Blending” (SB), a CS/TO solution was blended with sodium–montmorillonite (NaMt) or organomodified‐montmorillonite (OrgMt). In the second method, the so‐called “ModifiedClay” (MC), the TO was adsorbed into NaMt or OrgMt and the produced hybrid was added to CS. The tests indicated that nanocomposite films which were prepared via the MC method are promising materials for active packaging films. Practical applications Nowadays, a lot of effort is spent on finding advanced food conservation methods which extend shelf time, increase quality, and vanish the food odor problems. This study shows that films which are prepared via the modified clay method exhibit high antioxidant behavior and high antimicrobial activity against Escherichia coli. Also, tests on under‐vacuum packaged chicken breast fillets exhibit low lipid oxidation values. Thus, these films/pads are promising for active packaging applications of meat and other food products.

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Improved mechanical and antibacterial properties of active LDPE films prepared with combination of Ag, ZnO and CuO nanoparticles

Cited by 80 publications

References 36 publications

Effect of Fique Fibers in the Behavior of a New Biobased Composite from Renewable Mopa-Mopa Resin

Effect of Fique Fibers in the Behavior of a New Biobased Composite from Renewable Mopa-Mopa Resin

Physical, mechanical, and antibacterial characteristics of bio‐nanocomposite films loaded with Ag‐modified SiO₂ and TiO₂ nanoparticles

The effect of different preparation methods on the development of chitosan/thyme oil/montmorillonite nanocomposite active packaging films

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Improved mechanical and antibacterial properties of active LDPE films prepared with combination of Ag, ZnO and CuO nanoparticles

Cited by 80 publications

References 36 publications

Effect of Fique Fibers in the Behavior of a New Biobased Composite from Renewable Mopa-Mopa Resin

Effect of Fique Fibers in the Behavior of a New Biobased Composite from Renewable Mopa-Mopa Resin

Physical, mechanical, and antibacterial characteristics of bio‐nanocomposite films loaded with Ag‐modified SiO2 and TiO2 nanoparticles

The effect of different preparation methods on the development of chitosan/thyme oil/montmorillonite nanocomposite active packaging films

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Physical, mechanical, and antibacterial characteristics of bio‐nanocomposite films loaded with Ag‐modified SiO₂ and TiO₂ nanoparticles