scholarly journals Cellulose Nanoparticles Prepared by Ionic Liquid-Assisted Method Improve the Properties of Bionanocomposite Films

2021 ◽  
Author(s):  
Suellen Rocha Vieira ◽  
Jânia Betânia Alves da Silva ◽  
Janice Izabel Druzian ◽  
Denilson Assis de Jesus ◽  
Cassamo Ussemane Mussage ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Protic Ionic Liquid ◽  
Cellulose Nanoparticles ◽  
Synthetic Materials ◽  
Transmission Electron ◽  
Bionanocomposite Films ◽  
Packaging Industry ◽  
Chitosan Films

Abstract Bionanocomposites have garnered wide interest from the packaging industry as a biocompatible alternative to non-biodegradable petroleum-based synthetic materials. This study presents a simple and eco-friendly alternative to produce cellulose nanoparticles using a protic ionic liquid, and the effects of their incorporation in cassava starch and chitosan films are evaluated. Bionanocomposite films are prepared using the solvent casting method and are characterized using X-ray diffraction, Fourier transform infrared spectroscopy, zeta potential, thermogravimetry analysis, and transmission electron microscopy. The achieved yield of cellulose nanoparticles is 27.82%, and the crystalline index is 67.66%. The nanoparticles’ incorporation (concentration from 0.2 to 0.3%) results in a progressive reduction of water vapor permeability up to 49.50% and 26.97% for starch and chitosan bionanocomposite films, respectively. The starch films with 0.1% cellulose nanoparticles exhibit significantly increased flexibility compared to those without any addition. The nanoparticles’ incorporation in chitosan films increases the thermal stability without affecting the mechanical properties. The study demonstrates that the use of cellulose nanoparticles obtained using protic ionic liquid can be a simple, sustainable, and viable method to produce bionanocomposites with tailored properties useful for applications in the packaging industry.

scholarly journals Chitosan Films Obtained from Brachystola magna (Girard) and Its Evaluation on Quality Attributes in Sausages during Storage

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1782
Author(s):  
Juan Manuel Tirado-Gallegos ◽  
Paul Baruk Zamudio-Flores ◽  
Miguel Espino-Díaz ◽  
René Salgado-Delgado ◽  
Gilber Vela-Gutiérrez ◽  
...  
Keyword(s):  
Weight Loss ◽  
Lipid Oxidation ◽  
Meat Products ◽  
Water Vapor Permeability ◽  
Good Alternative ◽  
Quality Attributes ◽  
Vapor Permeability ◽  
Biodegradable Films ◽  
Molecular Weights ◽  
Chitosan Films

High molecular weight chitosan (≈322 kDa) was obtained from chitin isolated from Brachystola magna (Girard) to produced biodegradable films. Their physicochemical, mechanical and water vapor permeability (WVP) properties were compared against commercial chitosan films with different molecular weights. Brachystola magna chitosan films (CFBM) exhibited similar physicochemical and mechanical characteristics to those of commercial chitosans. The CFBM films presented lower WVP values (10.01 × 10−11 g/m s Pa) than commercial chitosans films (from 16.06 × 10−11 to 64.30 × 10−11 g/m s Pa). Frankfurt-type sausages were covered with chitosan films and stored in refrigerated conditions (4 °C). Their quality attributes (color, weight loss, pH, moisture, texture and lipid oxidation) were evaluated at 0, 5, 10, 15 and 20 days. Sausages covered with CFMB films presented the lowest weight loss (from 1.24 to 2.38%). A higher increase in hardness (from 22.32 to 30.63 N) was observed in sausages covered with CFMB films. Compared with other films and the control (uncovered sausages), CFMB films delay pH reduction. Moreover, this film presents the lower lipid oxidation level (0.10 malonaldehyde mg/sample kg). Thus, chitosan of B. magna could be a good alternative as packaging material for meat products with high-fat content.

scholarly journals Improving the Performance of Feather Keratin/Polyvinyl Alcohol/Tris(hydroxymethyl)Aminomethane Nanocomposite Films by Incorporating Graphene Oxide or Graphene

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 327 ◽  
Author(s):  
Shufang Wu ◽  
Xunjun Chen ◽  
Tiehu Li ◽  
Yingde Cui ◽  
Minghao Yi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Water Vapor Permeability ◽  
Nanocomposite Films ◽  
Light Transmittance ◽  
Vapor Permeability ◽  
Blend Films ◽  
Feather Keratin ◽  
Degradation Temperature ◽  
Bionanocomposite Films

In this study, feather keratin/polyvinyl alcohol/tris(hydroxymethyl)aminomethane (FK/PVA/Tris) bionanocomposite films containing graphene oxide (GO) (0.5, 1, 2, and 3 wt%) or graphene (0.5, 1, 2, and 3 wt%) were prepared using a solvent casting method. The scanning electron microscopy results indicated that the dispersion of GO throughout the film matrix was better than that of graphene. The successful formation of new hydrogen bonds between the film matrix and GO was confirmed through the use of Fourier-transform infrared spectroscopy. The tensile strength, elastic modulus, and initial degradation temperature of the films increased, whereas the total soluble mass, water vapor permeability, oxygen permeability, and light transmittance decreased following GO or graphene incorporation. In summary, nanoblending is an effective method to promote the application of FK/PVA/Tris-based blend films in the packaging field.

Study of Diffusion and Water Vapor Permeability in Chitosan Films and Chitosan Emulsified Films

2012 ◽  
Vol 326-328 ◽  
pp. 170-175 ◽  
Author(s):  
Arlete Barbosa dos Reis ◽  
Cristiana Maria Pedroso Yoshida ◽  
Vera Solange Oliveira Farias ◽  
Wilton Pereira Silva
Keyword(s):  
Water Vapor ◽  
Lipid Analysis ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Oxygen Barrier ◽  
Water Vapor Barrier ◽  
Industry Waste ◽  
Diffusive Permeability ◽  
Hydrophobic Compound ◽  
Chitosan Films

Chitosan is an abundant, natural polysaccaride obtained from fishing industry waste and films of chitosan also provide an efficient oxygen barrier. However, they are a poor water vapor barrier, which can be improved by incorporation of a hydrophobic compound, forming a emulsified film. Chitosan films were produced with the addition of palmitic acid lipid analysis and then the process in parallel with the diffusive permeability to water vapor. The objective of this work was to characterize the diffusion and water vapor permeability behavior of chitosan films and chitosan emulsified films.

scholarly journals Packaging Composite Films Fabricated from Cellulose Pulp with Polyurethane and Curcumin by Using NMMO ionic Liquid Solvent

2021 ◽  
Author(s):  
Chaehyun Jo ◽  
Sam Soo Kim ◽  
Srinivasan Ramalingam ◽  
Prabakaran D. S ◽  
Balasubramanian Rukmanikrishnan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Cost Effective ◽  
Barrier Properties ◽  
Vapor Permeability ◽  
Visual Appearance ◽  
Cellulose Pulp ◽  
Cost Effective Method ◽  
Uv Transmittance

Abstract Cellulose pulp (CP), polyurethane (PU), and curcumin-based biocompatible composite films were prepared using a simple cost-effective method. These materials dissolved well in the ionic liquid solvent N-methylmorpholine N-oxide. Significant structural and microstructural changes were observed in CP upon the addition of PU. These changes were studied using Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The 5% and 10% gravimetric losses of the CP/PU/curcumin composite were found to be in the range 87.2–182.3 ºC and 166.7–249.8 ºC, respectively. The addition of PU significantly improved the thermal stability and water barrier properties of the composites. All the composites exhibited single Tg values in the range 147.4–154.2 ºC. The tensile strength of CP was measured to be 93.2 MPa, which dropped to 14.1 MPa for the 1:0.5 CP/PU composite and then steadily increased to 30.5 MPa with further addition of PU. The elongation at break of the composites decreased from 8.1 to 3.7% with the addition of PU. The addition of PU also improved the water vapor permeability (3.96 ×10–9 to 1.75 ×10–9 g m–1 s–1 Pa–1) and swelling ratio (285 to 202%) of the CP composite films. The CP/PU/curcumin composite exhibited good antioxidant activity and no cytotoxicity when tested on the HaCat cell line. The visual appearance and UV transmittance (86.2–32.9% at 600 nm) of the CP composite films were significantly altered by the incorporation of PU and curcumin. This study demonstrates that CP/PU/curcumin composites can be used for various packaging and biomedical applications.

scholarly journals Physicochemical and Antioxidant Properties of Chitosan Films Incorporated with Cinnamon Oil

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Marco A. López-Mata ◽  
Saul Ruiz-Cruz ◽  
Norma Patricia Silva-Beltrán ◽  
José de Jesús Ornelas-Paz ◽  
Víctor Manuel Ocaño-Higuera ◽  
...  
Keyword(s):  
Water Vapor ◽  
Antioxidant Properties ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Protective Effects ◽  
Protective Capacity ◽  
Cinnamon Oil ◽  
Low Concentrations ◽  
Yellow Coloration ◽  
Chitosan Films

Chitosan films (CF) with cinnamon bark oil (CO) incorporated at 0% (control), 0.25%, 0.5%, and 1.0% v/v were prepared by an emulsion method. The films were characterized based on their physical properties (solubility, water vapor permeability, optical property, and microstructure) and antioxidant properties (DPPH, ABTS, and its protective effects on human erythrocytes). The results showed that the incorporation of 0.5 and 1.0% of CO into the CF significantly decreased its solubility to 22% of the control (p<0.05). The water vapor permeability of the CF-CO was significantly reduced to 40% with low concentrations of CO (0.25%) incorporated into the CF. In general, the films presented a yellow coloration and an increase in transparency with the incorporation of CO into the CF. It was also observed that the incorporation of CO increased the antioxidant activity between 6.0-fold and 14.5-fold compared to the control, and the protective capacity against erythrocyte hemolysis increased by as much as 80%.

Physical Properties of Chitosan Edible Films Incorporated with Essential Oil Monomers

2012 ◽  
Vol 550-553 ◽  
pp. 993-999 ◽  
Author(s):  
Yun Bin Zhang ◽  
Jun Peng
Keyword(s):  
Mechanical Properties ◽  
Essential Oil ◽  
Physical Properties ◽  
Water Solubility ◽  
Water Vapor Permeability ◽  
Antibacterial Activities ◽  
Edible Films ◽  
Vapor Permeability ◽  
Monomer Content ◽  
Chitosan Films

In this study, physical properties of chitosan edible films incorporated with essential oil monomers were tested. Emulsifying nature of chitosan could be combined essential oil monomer forming emulsions, hence homogeneous, thin and pale yellow membranes were achieved. With different of the essential oil monomer content, the nature of the films had undergone a drastic change. Water-solubility and water vapor permeability of chitosan edible films reduced when essential oil monomers concentration increased. All the mechanical properties(tensile strength and elongation) increased when essential oil monomers concentration gradual increased. Compared with single chitosan films, essential oil-chitosan films have been greatly enhanced their mechanical properties and antibacterial activities.

scholarly journals Characterization of Chitosan Film Incorporated with Curcumin Extract

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 963
Author(s):  
Pornchai Rachtanapun ◽  
Warinporn Klunklin ◽  
Pensak Jantrawut ◽  
Kittisak Jantanasakulwong ◽  
Yuthana Phimolsiripol ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Antioxidant Activity ◽  
Infrared Spectroscopy ◽  
Water Vapor ◽  
Moisture Content ◽  
Water Solubility ◽  
Chitosan Film ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Chitosan Films

Curcumin is a phenolic compound derived from turmeric roots (Curcuma longa L.). This research studied the effects of curcumin extract on the properties of chitosan films. The film characteristics measured included mechanical properties, visual aspects, color parameters, light transmission, moisture content, water solubility, water vapor permeability, infrared spectroscopy, and antioxidant activity. The results suggest that adding curcumin to chitosan-based films increases yellowness and light barriers. Infrared spectroscopy analysis showed interactions between the phenolic compounds of the extract and the chitosan, which may have improved the mechanical properties and reduced the moisture content, water solubility, and water vapor permeability of the films. The antioxidant activity of the films increased with increasing concentrations of the curcumin extract. This study shows the potential benefits of incorporating curcumin extract into chitosan films used as active packaging.

Chitosan-based films reinforced with cellulose nanofibrils isolated from Euterpe oleraceae MART

2021 ◽  
Vol 12 (1-2) ◽  
pp. 46-59
Author(s):  
DG Braga ◽  
PGF Bezerra ◽  
ABFD Lima ◽  
HA Pinheiro ◽  
LG Gomes ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Water Vapor ◽  
Modulus Of Elasticity ◽  
Water Solubility ◽  
Mechanical Performance ◽  
Cellulose Nanofibrils ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Water Vapor Absorption ◽  
Bionanocomposite Films

The use of local raw materials for the production of biodegradable films can simultaneously contribute to the development of the Amazon and global sustainability. This work aimed to evaluate the physical and mechanical performance of chitosan-based bionanocomposite films reinforced with different loads of cellulose nanofibrils obtained from açaí ( Euterpe oleraceae Mart.) under two nanofibrillation degrees. Nanofibrils were obtained by 3 and 21 passages in a grinder defibrillator. The films were produced by casting with nanofibril reinforcement at 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.%. The increase in the nanofibril level and nanofibrillation degree reduced water vapor absorption (75.20% to 51.93%), water solubility (28.33% to 17.91%), and density (0.87 g.cm−3 to 0.61 g.cm−3). The water vapor permeability decreased with higher nanofibril loads for both 3-pass (47.30% to 43.61%) and 21-pass (49.82% to 44.48%) reinforced films, but not with nanofibrillation degree. The increase in 3-pass nanofibril level decreased tensile strength (8.18 MPa to 7.88 MPa), modulus of elasticity (867.62 MPa to 670.02 MPa) and elongation at break (0.02 mm.mm−1 to 0.01 mm.mm−1). However, the opposite effect happened to 21-pass nanofibrils, with increases from 9.16 MPa to 9.73 MPa and from 502.00 MPa to 1119.62 MPa for tensile strength and modulus of elasticity, respectively. Meanwhile, the maximum elongation at rupture did not vary. It was concluded that chitosan-based bionanocomposite films reinforced with 20 wt.% of 21-pass nanofibril were more resistant, except for water vapor permeability. Adding coarser nanofibrils enhanced this property. The 3-pass nanofibrils reinforcement enables water solubility, which benefits other packaging applications.

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