Effect of Clay Nanofillers on the Mechanical and Water Vapor Permeability Properties of Xylan–Alginate Films

Naidu, Darrel Sarvesh; John, Maya Jacob

doi:10.3390/polym12102279

Cited by 44 publications

(36 citation statements)

References 74 publications

(103 reference statements)

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“…CEO has a clear hydrophobic nature and therefore will act towards decreasing of WVP, similar findings being reported [13]. The presence of ZnO nanoparticles also act as a physical barrier, increasing the pathways for water molecules [5,92]. The values for WVP decreased as the content of ZnO NPs increased.…”

Section: Water Vapor Permeability (Wvp)supporting

confidence: 72%

“…Ideally, loss of water, flavor and other specific substances should be negligible through packaging films for food [ 92 ]. Water vapor permeability (WVP) values are important as it controls the moisture migration between food and the outside of packaging.…”

Section: Resultsmentioning

confidence: 99%

“…The obtained values for WVP determination are presented in Table 5 . The WVP value for the alginate control (A) film is average when compared with literature [ 92 , 94 ] due to addition of glycerol, as this will form hydrogen bonds with the base polymer, which further increase the chain–chain distance [ 95 ]. Nevertheless, important decreases in WVP are observed for all samples when compared with alginate control film.…”

Section: Resultsmentioning

confidence: 99%

“…The presence of ZnO nanoparticles also act as a physical barrier, increasing the pathways for water molecules [ 5 , 92 ]. The values for WVP decreased as the content of ZnO NPs increased.…”

Section: Resultsmentioning

confidence: 99%

“…This process is accompanied by a weak endothermic effect on the DSC curve. The degradative-oxidative processes of organic part take place between 180 and 280 °C when weak exothermic effects are presented on DSC curves, low molecular weight fractions, and side chain moieties being eliminated [92]. This process may be associated with breakdown of C=O and C-C bonds from alginate chain and progressive carbonization of polysaccharide molecules [9].…”

Section: Thermal Analysismentioning

confidence: 99%

See 4 more Smart Citations

Biodegradable Alginate Films with ZnO Nanoparticles and Citronella Essential Oil—A Novel Antimicrobial Structure

et al. 2021

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The petroleum-based materials could be replaced, at least partially, by biodegradable packaging. Adding antimicrobial activity to the new packaging materials can also help improve the shelf life of food and diminish the spoilage. The objective of this research was to obtain a novel antibacterial packaging, based on alginate as biodegradable polymer. The antibacterial activity was induced to the alginate films by adding various amounts of ZnO nanoparticles loaded with citronella (lemongrass) essential oil (CEO). The obtained films were characterized, and antibacterial activity was tested against two Gram-negative (Escherichia coli and Salmonella Typhi) and two Gram-positive (Bacillus cereus and Staphylococcus aureus) bacterial strains. The results suggest the existence of synergy between antibacterial activities of ZnO and CEO against all tested bacterial strains. The obtained films have a good antibacterial coverage, being efficient against several pathogens, the best results being obtained against Bacillus cereus. In addition, the films presented better UV light barrier properties and lower water vapor permeability (WVP) when compared with a simple alginate film. The preliminary tests indicate that the alginate films with ZnO nanoparticles and CEO can be used to successfully preserve the cheese. Therefore, our research evidences the feasibility of using alginate/ZnO/CEO films as antibacterial packaging for cheese in order to extend its shelf life.

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Section: Water Vapor Permeability (Wvp)supporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The presence of ZnO nanoparticles also act as a physical barrier, increasing the pathways for water molecules [ 5 , 92 ]. The values for WVP decreased as the content of ZnO NPs increased.…”

Section: Resultsmentioning

confidence: 99%

Section: Thermal Analysismentioning

confidence: 99%

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Biodegradable Alginate Films with ZnO Nanoparticles and Citronella Essential Oil—A Novel Antimicrobial Structure

et al. 2021

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Fabrication of anti‐UV absorbing and antibacterial soybean protein isolate composite film modified with thyme and mangosteen peel extracts

Huang

Zhou

et al. 2022

J of Applied Polymer Sci

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In order to reduce the threat of 'plastic pollution' and reduce or eliminate some traditional polymer packaging materials, in this study, soybean protein isolate (SPI) composite film, a biodegradable natural polymer film, was prepared by tape casting method with Thyme (Thy) and mangosteen peel extracts (MPE) as antibacterial agents. The antibacterial rates of the composite films against E. coli and S. aureus were 95.79% and 92.63%, respectively, and the DPPH free radical scavenging rate was 70.28%. The composite film had good UV-visible barrier properties. Compared with the pure SPI film, the tensile strength of the composite film was improved, the water absorption, water solubility, and water vapor permeability were reduced, and the contact angle was improved. The maximum thermal decomposition temperature of the composite film increased and the thermal stability increased.

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Silver Nanoparticles Incorporated PVA‐MC Blends: A Systematic Approach To Understand Its Properties For Food Packaging Applications

et al. 2023

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Hither-to-unknown one-pot method for the synthesis and stabilization of silver nanoparticles (AgNPs) from silver nitrate (AgNO 3 ) through uncross-linked and cross-linked polyvinyl alcohol/methyl cellulose (PVA/MC) blend using solution casting method is discussed in detail. The formed films were characterized by fourier transform infrared spectroscopy (FTIR), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM) and analyzed for its physical, mechanical, biodegradable and antibacterial properties (particle size, water vapour transmission rate, water contact angle, thermogravimetric analysis (TGA), UV-Vis spectroscopy and migration). SEM and TEM results indicated that the formation of silver nanoparticles are spherical in shape as well as nano in size. FTIR spectroscopic analysis indicates the existence of hydrogen bonds in cross-linked blend and complex of silver (Ag) in uncross-linked blend. Further, enhanced mechanical, water barrier, and thermal properties are observed for the films containing AgNPs. Antibacterial test by disc diffusion method showed that, uncross-linked and crosslinked blend with AgNPs have more inhibition (mm) against L. Monocytogenes (10.33), Klebsiella (9.67) (Gram-positive) and Salmonella (9.33), E. Coli (8.33) (Gram-negative) strains respectively. Migration studies demonstrated that the developed films could be suitable for fatty food packaging.

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Effect of Clay Nanofillers on the Mechanical and Water Vapor Permeability Properties of Xylan–Alginate Films

Cited by 44 publications

References 74 publications

Biodegradable Alginate Films with ZnO Nanoparticles and Citronella Essential Oil—A Novel Antimicrobial Structure

Biodegradable Alginate Films with ZnO Nanoparticles and Citronella Essential Oil—A Novel Antimicrobial Structure

Fabrication of anti‐UV absorbing and antibacterial soybean protein isolate composite film modified with thyme and mangosteen peel extracts

Silver Nanoparticles Incorporated PVA‐MC Blends: A Systematic Approach To Understand Its Properties For Food Packaging Applications

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