Structural, Mechanical, and Transport Properties of Electron Beam-Irradiated Chitosan Membranes at Different Doses

Baroudi, Alia; Garcı́a-Payo, M.C.; Khayet, M.

doi:10.3390/polym10020117

Cited by 26 publications

(28 citation statements)

References 59 publications

(143 reference statements)

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“…When CHT was crosslinked with GA, the intense band at 1650 cm −1 became composed of the amide I and the corresponding imine bond [36,37] (–C=N–typically found at 1655 cm −1 ), however amide II was of higher intensity than amide I absorption. The Fourier-transform infrared spectroscopy (FTIR) spectra of chitosan films crosslinked with PEGDE showed a higher intensity of amide I in comparison with amide II.…”

Section: Resultsmentioning

confidence: 99%

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The Effect of PEGDE Concentration and Temperature on Physicochemical and Biological Properties of Chitosan

et al. 2019

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Chitosan (CHT) is a polysaccharide with multiple claimed properties and outstanding biocompatibility, generally attributed to the presence of protonable amino groups rendering a cationic natural polymer. However, the effect of changes in CHT structure due to hydration is not considered in its performance. This study compares the effects on biocompatibility after drying at 25 °C and 150 °C scaffolds of chitosan, polyethylene glycol diglycidyl ether (PEGDE) crosslinked CHT (low, medium and high concentration) and glutaraldehyde (GA) crosslinked CHT. PEGDE crosslinked CHT showed a reduction in free amino groups and the amide I/II ratio, which exhaustive drying reduced further. In X-ray diffraction (DRX) analysis, PEGDE crosslinked CHT showed multiple peaks, whereas the crystallinity percentage was reduced with an increase in PEGDE concentration and thermal treatments at 150 °C. In a direct contact cell assay, high osteoblast viability was achieved at low and medium PEDGE concentrations, which was improved when the crosslinked scaffolds were thermally treated at 150 °C. This was attributed to its partial hydrophilicity, low crystallinity and low surface roughness; this in spite of the small reduction in the amount of free amino groups on the surface induced during drying at 150 °C. Furthermore, PEGDE crosslinked CHT scaffolds showed strong vinculin and integrin 1β expression, which render them suitable for bone contact applications.

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Section: Resultsmentioning

confidence: 99%

“…This structure was retained with a slight degree of crosslinking (CHT PEGDE1), but giving rise to additional peaks at 2θ = 5.6° and 2θ = 15° in more crosslinked samples (CHT PEGDE2 and CHT PEGDE3). Baroudi et al attribute the 2θ = 15° to a hydrated chitosan polymorph crystal as a complex with water and acid [37].…”

Section: Resultsmentioning

confidence: 99%

The Effect of PEGDE Concentration and Temperature on Physicochemical and Biological Properties of Chitosan

et al. 2019

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“…Chitosan are all chitin derivatives having a degree of deacetylation of 50% or more. The relative proportions of these units generate distinct structural characteristics, such as the degree of deacetylation and molecular weight, whose structural characteristics are related to the physicochemical and biological properties of the polymer [ 30 , 74 , 75 ].…”

Section: Chitin To Chitosan Conversionmentioning

confidence: 99%

Seafood Waste as Attractive Source of Chitin and Chitosan Production and Their Applications

Santos

Marques

Maia

et al. 2020

IJMS

264

123

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Chitosan is a cationic polymer obtained by deacetylation of chitin, found abundantly in crustacean, insect, arthropod exoskeletons, and molluscs. The process of obtaining chitin by the chemical extraction method comprises the steps of deproteinization, demineralization, and discoloration. To obtain chitosan, the deacetylation of chitin is necessary. These polymers can also be extracted through the biological extraction method involving the use of microorganisms. Chitosan has biodegradable and biocompatible properties, being applied in the pharmaceutical, cosmetic, food, biomedical, chemical, and textile industries. Chitosan and its derivatives may be used in the form of gels, beads, membranes, films, and sponges, depending on their application. Polymer blending can also be performed to improve the mechanical properties of the bioproduct. This review aims to provide the latest information on existing methods for chitin and chitosan recovery from marine waste as well as their applications.

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“…Natural materials with antibacterial activities such as polysaccharides, proteins, and lipids have been proven to be promising for food packaging applications because of their environmentally friendly and biodegradable properties [ 6 ]. Chitosan (CS), derived from chitin, has been proven to be promising for food packaging applications [ 7 , 8 ]. CS is composed of N-acetyl-D-glucosamine and D-glucosamine unit [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

60Co γ-ray Irradiation Crosslinking of Chitosan/Graphene Oxide Composite Film: Swelling, Thermal Stability, Mechanical, and Antibacterial Properties

et al. 2018

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Abstract:In this paper, chitosan (CS)/graphene oxide (GO) composite films were prepared, and the effect of γ-ray irradiation on the properties of composite films was investigated. The irradiation crosslinking reaction occurred in composite films with the existence of acetic acid, and the properties changed upon the various irradiation dose. The swelling degree of the composite film with 0 wt % GO decreased with the increasing of the irradiation dose, but the swelling degree of which with GO increased instead. The thermal stability increased with the increasing of the irradiation dose, but the effect of the irradiation on the thermal stability weakened as the increasing of the content of GO, due to the enhanced irradiation resistance performance. The tensile strength increased firstly and decreased subsequently with the increasing of the irradiation dose and the content of GO. Composite films showed the enhanced antibacterial activity against Bacillus subtilis, compared to Escherichia coli and Staphylococcus aureus. The antibacterial activity weakened with the increasing of the content of GO. The antibacterial activity was relatively stronger when the irradiation dose was 20 KGy. In addition, the structural, crystal, and morphological properties of composite films were characterized by FT-IR, XRD, and SEM. It is worth noting that the GO was pre-functionalized via KH560 for the better compatibility with CS matrix.

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Structural, Mechanical, and Transport Properties of Electron Beam-Irradiated Chitosan Membranes at Different Doses

Cited by 26 publications

References 59 publications

The Effect of PEGDE Concentration and Temperature on Physicochemical and Biological Properties of Chitosan

The Effect of PEGDE Concentration and Temperature on Physicochemical and Biological Properties of Chitosan

Seafood Waste as Attractive Source of Chitin and Chitosan Production and Their Applications

60Co γ-ray Irradiation Crosslinking of Chitosan/Graphene Oxide Composite Film: Swelling, Thermal Stability, Mechanical, and Antibacterial Properties

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