Incorporation of Rice Starch Affecting on Morphology, Mechanical Properties and Water Vapor Permeability of Glutelin-based Composite Films

The leather industry generates considerable amounts of solid waste and raises many environmental concerns during its disposal. The presence of collagen in these wastes provides a potential protein source for the fabrication of bio-based value-added products. Herein, a novel composite film was fabricated by incorporating vegetable-tanned collagen fiber (VCF), a mechanically ground powder-like leather waste, into a chitosan matrix and crosslinked with genipin. The obtained composite film showed a compact structure and the hydrogen bonding interactions were confirmed by FTIR analysis, indicating a good compatibility between chitosan and VCF. The optical properties, water absorption capacity, thermal stability, water vapor permeability and mechanical properties of the composite films were characterized. The incorporation of VCF into chitosan led to significant decreases in opacity and solubility of the films. At the same time, the mechanical properties, water vapor permeability and thermal stability of the films were improved. The composite film exhibited antibacterial activity against food-borne pathogens. Results from this research indicated the potential of the genipin-crosslinked chitosan/VCF composites for applications in antimicrobial packaging.

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Physical Properties of Starch/Powdered Activated Carbon Composite Films

Polymers ◽

10.3390/polym13244406 ◽

2021 ◽

Vol 13 (24) ◽

pp. 4406

Author(s):

Anita Kwaśniewska ◽

Michał Świetlicki ◽

Adam Prószyński ◽

Grzegorz Gładyszewski

Keyword(s):

Mechanical Properties ◽

Activated Carbon ◽

Water Vapor ◽

Water Solubility ◽

Composite Films ◽

Water Vapor Permeability ◽

Barrier Properties ◽

Carbon Composite ◽

Powdered Activated Carbon ◽

Vapor Permeability

In the present study, starch/powdered activated carbon composite films were prepared by incorporating various amounts of powdered activated carbon (PAC)—1–5, 10, and 15 %—into a starch matrix, using the solvent casting method. The effect of PAC addition on the biopolymer film was investigated. The mechanical properties were examined by ultra-nanoindentation, nanoscratch, and micro-tensile tests. Since the mechanical properties of biopolymer films are correlated with their structure, the effect of PAC addition was tested using X-ray diffraction. The surface parameters morphology and wettability were analyzed by atomic force microscopy (AFM) and contact angle measurements. The barrier properties were examined by determining water vapor permeability and the water solubility index. The obtained results did not show a monotonic dependence of the mechanical parameters on PAC content, with the exception of the maximum strain, which decreased as the amount of the additive increased. The visible effect of PAC addition was manifested in changes in the adhesive force value and in water vapor permeability (WVP). The barrier properties decreased with the increase of the filler content.

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Effect of the talc filler on structural, water vapor barrier and mechanical properties of poly(lactic acid) composites

Journal of Polymer Engineering ◽

10.1515/polyeng-2015-0014 ◽

2016 ◽

Vol 36 (2) ◽

pp. 181-188 ◽

Cited By ~ 5

Author(s):

Aleksandra Buzarovska ◽

Gordana Bogoeva-Gaceva ◽

Radek Fajgar

Keyword(s):

Mechanical Properties ◽

Lactic Acid ◽

Water Vapor ◽

Composite Films ◽

Water Vapor Permeability ◽

Barrier Properties ◽

Poly Lactic Acid ◽

Vapor Permeability ◽

Scanning Calorimetry ◽

Structural Water

Abstract Poly(lactic acid) (PLA) based composite films with different content of talc (5–15 wt%) were prepared by the solvent casting method. The effect of talc on morphological, structural, thermal, barrier and mechanical properties of neat PLA was investigated. The PLA/talc composites revealed a polymorphic crystalline structure, as demonstrated by X-ray diffraction (XRD) study and differential scanning calorimetry (DSC) analysis. The PLA/talc composites also exhibited significantly improved barrier properties (up to 55% compared to neat PLA), as shown by water vapor permeability (WVP) tests. The puncture measurements showed improved mechanical properties at lower content of talc (up to 5 wt%), and increased brittleness of the PLA/talc composite films at higher talc concentrations.

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Application of Solution Blow Spinning for Rapid Fabrication of Gelatin/Nylon 66 Nanofibrous Film

Foods ◽

10.3390/foods10102339 ◽

2021 ◽

Vol 10 (10) ◽

pp. 2339

Author(s):

Zhichao Yang ◽

Chaoyi Shen ◽

Yucheng Zou ◽

Di Wu ◽

Hui Zhang ◽

...

Keyword(s):

Mechanical Properties ◽

Water Vapor ◽

Composite Film ◽

Food Packaging ◽

Composite Films ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Nylon 66 ◽

Rapid Fabrication ◽

Solution Blow Spinning

Gelatin (GA) is a natural protein widely used in food packaging, but its fabricated fibrous film has the defects of a high tendency to swell and inferior mechanical properties. In this work, a novel spinning technique, solution blow spinning (SBS), was used for the rapid fabrication of nanofiber materials; meanwhile, nylon 66 (PA66) was used to improve the mechanical properties and the ability to resist dissolution of gelatin films. Morphology observations show that GA/PA66 composite films had nano-diameter from 172.3 to 322.1 nm. Fourier transform infrared spectroscopy and X-ray indicate that GA and PA66 had strong interaction by hydrogen bonding. Mechanical tests show the elongation at break of the composite film increased substantially from 7.98% to 30.36%, and the tensile strength of the composite film increased from 0.03 MPa up to 1.42 MPa, which indicate that the composite films had the highest mechanical strength. Water vapor permeability analysis shows lower water vapor permeability of 9.93 g mm/m2 h kPa, indicates that GA/PA66 film’s water vapor barrier performance was improved. Solvent resistance analysis indicates that PA66 could effectively improve the ability of GA to resist dissolution. This work indicates that SBS has great promise for rapid preparation of nanofibrous film for food packaging, and PA66 can be applied to the modification of gelatin film.

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WATER VAPOR PERMEABILITY AND MECHANICAL PROPERTIES OF CHITOSAN COMPOSITE FILMS

Journal of the Chilean Chemical Society ◽

10.4067/s0717-97072004000200013 ◽

2004 ◽

Vol 49 (2) ◽

Cited By ~ 9

Author(s):

S. Patricia Miranda ◽

Omar Garnica ◽

Virginia Lara-Sagahon ◽

Galo Cárdenas

Keyword(s):

Mechanical Properties ◽

Water Vapor ◽

Composite Films ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Chitosan Composite

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Development of PE/PCL Bilayer Films Modified with Casein and Aluminum Oxide

Molecules ◽

10.3390/molecules26113090 ◽

2021 ◽

Vol 26 (11) ◽

pp. 3090

Author(s):

Anita Ptiček Siročić ◽

Ana Rešček ◽

Zvonimir Katančić ◽

Zlata Hrnjak-Murgić

Keyword(s):

Mechanical Properties ◽

Thermal Properties ◽

Water Vapor ◽

Aluminum Oxide ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Mechanical And Thermal Properties ◽

Oxide Compound ◽

Bilayer Films ◽

Oxide Particles

The studied samples were prepared from polyethylene (PE) polymer which was coated with modified polycaprolactone (PCL) film in order to obtain bilayer films. Thin PCL film was modified with casein/aluminum oxide compound to enhance vapor permeability as well as mechanical and thermal properties of PE/PCL films. Casein/aluminum oxide modifiers were used in order to achieve some functional properties of polymer film that can be used in various applications, e.g., reduction of water vapor permeability (WVTR) and good mechanical and thermal properties. Significant improvement was observed in mechanical properties, especially in tensile strength as well as in water vapor values. Samples prepared with aluminum oxide particles indicated significantly lower values up to 60%, and samples that were prepared with casein and 5% Al2O3 showed the lowest WVTR value.

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Few-layer graphene aqueous suspensions for polyurethane composite coatings

MRS Advances ◽

10.1557/adv.2016.640 ◽

2016 ◽

Vol 2 (1) ◽

pp. 57-62 ◽

Cited By ~ 2

Author(s):

Eunice Cunha ◽

Fernando Duarte ◽

M. Fernanda Proença ◽

M. Conceição Paiva

Keyword(s):

Mechanical Properties ◽

Tensile Testing ◽

Composite Coatings ◽

Composite Films ◽

Water Vapor Permeability ◽

Waterborne Polyurethane ◽

Vapor Permeability ◽

Layer Graphene ◽

Polyurethane Composite ◽

Few Layer Graphene

ABSTRACTGraphite nanoplates (GnP) have recently attracted attention as an economically viable alternative for the development of functional and structural nanocomposites. The incorporation of GnP into waterborne polyurethane (WPU) with loadings from 0.1 to 10 wt.% was studied. The mechanical properties of the composite films were assessed by tensile testing showing an increase of the Young’s modulus up to 48%. The electrical conductivity increased by 9 orders of magnitude and the water vapor permeability of the composite films decreased 57% for composites containing 5.0 wt.% of GnP.

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Elaboration and Characterization of Active Apple Starch Films Incorporated with Ellagic Acid

Coatings ◽

10.3390/coatings8110384 ◽

2018 ◽

Vol 8 (11) ◽

pp. 384

Author(s):

Juan Tirado-Gallegos ◽

Paul Zamudio-Flores ◽

José Ornelas-Paz ◽

Claudio Rios-Velasco ◽

Guadalupe Olivas Orozco ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Water Vapor ◽

Antioxidant Capacity ◽

Ellagic Acid ◽

Uv Light ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Starch Films

Apple starch films were obtained from apples harvested at 60, 70, 80 and 90 days after full bloom (DAFB). Mechanical properties and water vapor permeability (WVP) were evaluated. The apple starch films at 70 DAFB presented higher values in the variables of tensile strength (8.12 MPa), elastic modulus (3.10 MPa) and lower values of water vapor permeability (6.77 × 10−11 g m−1 s−1 Pa−1) than apple starch films from apples harvested at 60, 80 and 90 DAFB. Therefore, these films were chosen to continue the study incorporating ellagic acid (EA). The EA was added at three concentrations [0.02% (FILM-EA0.02%), 0.05% (FILM-EA0.05%) and 0.1% (FILM-EA0.1%) w/w] and compared with the apple starch films without EA (FILM-Control). The films were characterized by their physicochemical, optical, morphological and mechanical properties. Their thermal stability and antioxidant capacity were also evaluated. The FILM-Control and FILM-EA0.02% showed a uniform surface, while FILM-EA0.05% and FILM-EA0.1% showed a rough surface and insoluble EA particles. Compared to FILM-Control, EA modified the values of tensile strength, elasticity modulus and elongation at break. The antioxidant capacity increased as EA concentration did. EA incorporation allowed obtaining films with higher antioxidant capacity, capable of blocking UV light with better mechanical properties than film without EA.

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