Characteristics of chitosan membranes modified by argon plasmas

Wanichapichart, Pikul; Sungkum, R.; Taweepreda, Wirach; Nisoa, Mudtorlep

doi:10.1016/j.surfcoat.2009.02.069

Cited by 31 publications

(12 citation statements)

References 13 publications

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“…The h values of the chitosan film were the smaller (69.08 6 0.68) [ Figure 6(a) and Table II] and in agreement with the range found in previously published reports, that is, around 658-708, 43 which demonstrate the hydrophilic surface of the film (h < 908). The higher hydrophilicity of the chitosan film can be attributed to the water-binding capacity of its functional groups (amino and hydroxyl groups).…”

Section: Characteristics Of the Cnssupporting

confidence: 91%

Development and characterization of chitosan bionanocomposites containing oxidized cellulose nanocrystals

Souza

Niehues

Quadri

2015

J of Applied Polymer Sci

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In this research, cellulose nanocrystals (CNs) were extracted from corn cobs by 2,2,6,6,-tetramethylpiperidine-1-oxyl radical-mediated oxidation combined with ultrasonic treatment for the first time. These CNs were then used as a mechanical reinforcement agent and barrier in chitosan-based bionanocomposite films. Birefringence analyses under crossed polarizers indicated the presence of isolated nanocrystals in suspension, which was later confirmed by TEM analysis. The crystallinity index obtained from X-ray diffraction was 92.4%. The incorporation of these nanoparticles into a filmogenic matrix of chitosan made it possible to obtain bionanocomposite films with improved properties. The water-vapor permeability was reduced by 70%, whereas the tensile strength and Young's modulus increased by up to 136 and 224% respectively. The developed films were applied as interleaving of sliced cheese, and the efficiency was assessed by investigation of adhesion between the surfaces and by comparing its properties with two commercial interleaving products (polyethylene (PE), and Greasepel paper (GP)). Concluding, the developed films showed a substantial potential to be exploited as an interleaving film, owing to its excellent mechanical properties, permeability, hydrophobicity, and low surface adhesion compared to pure chitosan, PE, and GP films.

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Section: Characteristics Of the Cnssupporting

confidence: 91%

Development and characterization of chitosan bionanocomposites containing oxidized cellulose nanocrystals

Souza

Niehues

Quadri

2015

J of Applied Polymer Sci

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“…For example, the range of contact angles of wettability described in literature spans an extremely wide range of 60 À 1008. [17,18,[29][30][31] In our study, the film samples prepared from different chitosans by the same procedure were found to have distinctly different surface properties, morphology and surface chemical structure.…”

Section: Film Characterizationmentioning

confidence: 85%

DC Discharge Plasma Modification of Chitosan Films: An Effect of Chitosan Chemical Structure

Демина

Drozdova

Yablokov

et al. 2015

Plasma Processes & Polymers

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Surface plasma treatment of chitosan films is a widely used technique to control a variety of their properties, such as permeability, hemostatic activity and ability to support cell adhesion, proliferation and growth. Among other factors to be controlled, the chemical structure of initial chitosan is rarely taken into consideration. This work is aimed to highlight this factor by the example of low pressure direct-current discharge of various chitosan film samples. Contact angle measurements, X-ray photoelectron spectroscopy and scanning electron microscopy revealed differences in the film surface properties of the initial and plasma-treated films. The effect of the plasma treatment on cell viability of L929 mouse fibroblasts was studied by MTT-assay.

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“…The ensuing structural functional group alterations were studied by ATR-FTIR spectroscopy. Figure 2 illustrates a comparison between the ATR-FTIR spectra of the irradiated samples and the spectrum of the reference sample; the major characteristic peaks of chitosan are listed in Table 3 [41][42][43]. In the ATR-FTIR spectra, the intensities of characteristic peaks at 3400, 2875, 1640, 1375, 1155, and 1092 cm -1 increased after ion irradiation.…”

Section: Attenuated Total Reflectance Fourier-transform Infrared (Atr-ftir) Spectroscopy Characterizationmentioning

confidence: 99%

Modification of Chitosan Membranes via Methane Ion Beam

et al. 2020

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Chitosan has been used for biomedical applications in recent years, primarily because of its biocompatibility. A chitosan membrane with a 30 μm thickness was prepared and investigated for its surface modification using methane ions. Methane ions were implanted into the chitosan membrane using a Kaufman ion source; bombardment was accomplished using three accelerating voltages of ion beams—30, 55, and 80 kV. The influence of the ion bombardment on morphology, crystallinity, and hydrophilicity was investigated. Attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy analysis showed that a triplet bond appeared after the implantation of methane ions (acceleration voltage: 80 kV), culminating in the creation of a more amorphous membrane structure. The analyses of atomic force microscopy (AFM) images showed that, with the increase in bombardment energy, the roughness of the surface changed. These results revealed that ion bombardment improved the hydrophilicity of the membranes and the water fluxes of chitosan membranes altered after methane ion bombardment.

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Characteristics of chitosan membranes modified by argon plasmas

Cited by 31 publications

References 13 publications

Development and characterization of chitosan bionanocomposites containing oxidized cellulose nanocrystals

Development and characterization of chitosan bionanocomposites containing oxidized cellulose nanocrystals

DC Discharge Plasma Modification of Chitosan Films: An Effect of Chitosan Chemical Structure

Modification of Chitosan Membranes via Methane Ion Beam

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