Stabilization and Dispersion of ZnO Nanoparticles in PVA Matrix

Barman, Ananya; de..., À la Mémoire; Das, Mahuya

doi:10.1007/s10904-019-01395-7

Cited by 15 publications

(10 citation statements)

References 39 publications

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“…However, PVA biopolymer-based films and their derivatives are hygroscopic and have poor moisture barrier characteristics [13,17]. These qualities can be improved by combining two or more biopolymers and using a small concentration of nanofillers [18].…”

Section: Introductionmentioning

confidence: 99%

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

et al. 2022

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Photodegradation and oxidation are major causes of the deterioration of food, resulting in darkening, off-flavors, and nutrient deficiency. To reduce this problem, novel functional polymeric materials are being developed to retain food’s light sensitivity. Nanofillers are also used in a polymeric film to produce effective UV blockings and oxygen barrier coatings so that the degradation of the food can be delayed, thereby increasing the shelf life. For this purpose, polyvinyl alcohol coatings were prepared by the incorporation of ZnO nanoparticles. Polyvinyl alcohol is a naturally excellent barrier against oxygen, and the addition of ZnO particles at the nanoscale size has demonstrated effective UV blocking capabilities. In this work, the hydrothermal technique is used to produce ZnO nanoparticles, and these produced particles are then incorporated into the polyvinyl alcohol to produce thin films. These films are characterized in terms of the compositional, macroscopic, microscopic, and optical properties via X-ray diffraction (XRD), FTIR, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA), as well as UV–VIS spectroscopy. ZnO nanoparticles at different concentrations were incorporated into the PVA solution, and the films were processed via the blade coating method. With the addition of ZnO, the oxygen transmission rate (OTR) of pure PVA was not altered and remained stable, and the lowest OTR was recorded as 0.65 cm3/m2·day·bar. Furthermore, the addition of ZnO increased the water contact angle (WCA) of PVA, and the highest WCA was recorded to be around more than 70°. Due to this, water permeability decreased. Additionally, PVA/ZnO films were highly flexible and bendable and maintained the OTR even after going through bending cycles of 20K. Furthermore, the addition of ZnO showed a significant UV blocking effect and blocked the rays below a wavelength of 380 nm. Finally, the optimized films were used for packaging applications, and it was observed that the packaged apple remained fresh and unoxidized for a longer period as compared with the piece of apple without packaging. Thus, based on these results, the PVA/ZnO films are ideally suited for packaging purposes and can effectively enhance the shelf life of food.

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Section: Introductionmentioning

confidence: 99%

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

et al. 2022

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“…The obtained results indicate that the TC of the sample is approximately 60 mg/L (organic carbon-49 mg/L, and inorganic carbon-11 mg/L). This element may be a residue from the synthesis process or come from a stabilizer [33,34]. However, after the nanoparticles' immobilization with antibiotics, a few changes at the recorded spectra were noted.…”

Section: Physico-chemical Characteristics Of Immobilized Zinc Oxide Nanoparticlesmentioning

confidence: 99%

The Study on Molecular Profile Changes of Pathogens via Zinc Nanocomposites Immobilization Approach

Rogowska

Railean-Plugaru

Walczak-Skierska

et al. 2021

IJMS

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The most critical group of all includes multidrug resistant bacteria that pose a particular threat in hospitals, as they can cause severe and often deadly infections. Modern medicine still faces the difficult task of developing new agents for the effective control of bacterial-based diseases. The targeted administration of nanoparticles can enhance the efficiency of conventional pharmaceutical agents. However, the interpretation of interfaces’ interactions between nanoparticles and biological systems still remains a challenge for researchers. In fact, the current research presents a strategy for using ZnO NPs immobilization with ampicillin and tetracycline. Firstly, the study provides the mechanism of the ampicillin and tetracycline binding on the surface of ZnO NPs. Secondly, it examines the effect of non-immobilized ZnO NPs, immobilized with ampicillin (ZnONPs/AMP) and tetracycline (ZnONPs/TET), on the cells’ metabolism and morphology, based on the protein and lipid profiles. A sorption kinetics study showed that the antibiotics binding on the surface of ZnONPs depend on their structure. The efficiency of the process was definitely higher in the case of ampicillin. In addition, flow cytometry results showed that immobilized nanoparticles present a different mechanism of action. Moreover, according to the MALDI approach, the antibacterial activity mechanism of the investigated ZnO complexes is mainly based on the destruction of cell membrane integrity by lipids and proteins, which is necessary for proper cell function. Additionally, it was noticed that some of the identified changes indicate the activation of defense mechanisms by cells, leading to a decrease in the permeability of a cell’s external barriers or the synthesis of repair proteins.

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“…[21] Therefore, the antibacterial properties of nano-ZnO are the particularly outstanding properties among these functional properties. [22,23] Despite the outstanding modification effect of nanoscale silica, the agglomeration of nanoparticles and the problem of dispersibility in the polymer matrix are still serious problems. [24][25][26] Seangyen et al [27] modified SiO 2 with ammonium laurate surfactant and then mixed it with NRL to prepare an NRL nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

SiO₂ and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties

Mou

Fu³

et al. 2022

Polymer Engineering & Sci

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The modification of polymer with nanoparticles has been proved to have good results, but the key of this method is that nanoparticles can maintain uniform dispersion in the polymer. Herein, silica (SiO 2 ) and zinc oxide (ZnO) hybrid nanofillers were prepared by self-made dispersion equipment to modify natural rubber latex (NRL). The results show that the uniformly dispersed nano-SiO 2 fillers increase the number of entanglements in the molecular chain of NRL, thereby improving the tensile properties. The tensile strength and elongation at break of

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Stabilization and Dispersion of ZnO Nanoparticles in PVA Matrix

Cited by 15 publications

References 39 publications

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

The Study on Molecular Profile Changes of Pathogens via Zinc Nanocomposites Immobilization Approach

SiO₂ and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties

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Stabilization and Dispersion of ZnO Nanoparticles in PVA Matrix

Cited by 15 publications

References 39 publications

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

UV Blocking and Oxygen Barrier Coatings Based on Polyvinyl Alcohol and Zinc Oxide Nanoparticles for Packaging Applications

The Study on Molecular Profile Changes of Pathogens via Zinc Nanocomposites Immobilization Approach

SiO2 and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties

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Product

Resources

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SiO₂ and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties