Preparation and characterization of keratin–chitosan composite film

Tanabe, Toshizumi; Okitsu, Naoya; Tachibana, Akira; Yamauchi, Kiyoshi

doi:10.1016/s0142-9612(01)00187-9

Cited by 288 publications

(199 citation statements)

References 12 publications

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“…BNCs are made of natural polymer matrix and organic/inorganic filler with at least one dimension on the nanometer scale. Among natural polymers chitosan has been extensively investigated as a natural cationic biopolymer with excellent bioactivity, biodegradability, biocompatibility, nontoxicity and multi functional groups as well as solubility in aqueous medium for food packaging film, bone substitutes and artificial skin [1][2][3][4] . MMT as a lamellar clay has intercalation, swelling and ion exchange properties.…”

Section: Duementioning

confidence: 99%

Synthesis and Characterization of Silver/Clay/Chitosan Bionanocomposites by UV-Irradiation Method

Ahmad

Shameli

Darroudi

et al. 2009

American Journal of Applied Sciences

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Problem statement: Silver/Montmorillonite/Chitosan Bionanocomposites (Ag/MMT/Cts BNCs) have been synthesized by UV-irradiation reduction method in the absence of any reducing agent or heat treatment which is used to antibacterial application and medical devices. Approach: MMT, Chitosan and AgNO 3 were used as a solid support, stabilizer and silver precursor, respectively. The properties of Ag/MMT/Cts BNCs were studied as a function of UV-irradiation times. The crystalline structure, d-spacing of interlayer of MMT, the size distributions and surface plasmon resonance of synthesized silver nanoparticles (Ag-NPs) were characterized using Powder X-Ray Diffraction (PXRD), Transmission Electron Microscopy (TEM) and UV-vis spectroscopy. The functional groups of prepared BNCs were also determined by Fourier Transform Infrared (FT-IR). Results: The results obtained from UV-vis spectroscopy of synthesized Ag-NPs showed that the intensity of the maximum wavelength of the plasmon peaks were increased with the increasing in the UV-irradiation times. Results from UV-visible spectroscopy and Transmission Electron Microscopy (TEM) microphotographs show that particles size of Ag-NPs decrease with the increase of UV-irradiation time. Conclusion: UV-irradiation disintegrated the Ag-NPs into smaller size until a relatively stable size and size distribution were achieved. Ag/MMT/Cts BNCs could be suitable to antimicrobial applications and medical devices.

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Section: Duementioning

confidence: 99%

Synthesis and Characterization of Silver/Clay/Chitosan Bionanocomposites by UV-Irradiation Method

Ahmad

Shameli

Darroudi

et al. 2009

American Journal of Applied Sciences

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“…Keratin-based materials are suitable for biomedical [18,23,24], cosmetical [25] and agricultural applications [26]. Due to biodegradability and high mechanical strength, keratin materials have a promising potential for biodegradable packaging production [27,28].…”

Section: Introductionmentioning

confidence: 99%

Alternative Methods of Preparation of Soluble Keratin from Chicken Feathers

Sinkiewicz

Śliwińska

Staroszczyk

et al. 2016

Waste Biomass Valor

139

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Huge amount of keratinous waste, especially birds' feathers, demands more value-added application instead of dumping. The present work reports the results of experiments aimed at preparing soluble keratin useful for novel bioproduct formation. The effect of thermo-chemical treatments with various reducing agents, i.e. 2-mercaptoethanol, dithiothreitol, sodium m-bisulphite, and sodium bisulphite, as well as sodium hydroxide, on the yield of keratin extracted from chicken feathers was determined. It was shown that after 2-h reduction with 2-mercaptoethanol and sodium bisulphite, the yield of soluble keratin was about equal and amounted to 84 and 82 %, respectively. The cheaper and harmless sodium bisulphite additionally decreased the extraction time to 1 h with the same yield. Moreover, treatment of the feathers with 2.5 % NaOH further improved the extraction effectiveness by increasing the yield up to 94 %. The results of the study demonstrate the viability of hydrolytic processes to obtain soluble keratin useful for biodegradable film formation for food application, that are harmless and more effective than solubilization by reduction of the disulphide bonds. Graphical Abstract

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“…Films developed only from keratin exhibit relatively poor mechanical properties, are very fragile, and show a high moisture sensitivity, like other protein-based films. A variety of studies has been devoted to the improvement of the properties of keratin films by blending keratin with both natural [12][13][14][15][16] and synthetic polymers [6,17]. Nevertheless, using natural polymer/keratin blend films would just enhance the film-forming ability but not fundamentally improve the water resistance, due to the high hydrophilicity of natural polymers.…”

Section: Introductionmentioning

confidence: 99%

Keratin/Polyvinyl Alcohol Blend Films Cross-Linked by Dialdehyde Starch and Their Potential Application for Drug Release

Dou

Zhang

et al. 2015

Polymers

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Feather keratin (FK) extracted from feathers represents a valuable source of biodegradable and biocompatible polymer. The aim of this study was the development and characterization of blended films based on FK and polyvinyl alcohol (PVA) cross-linked by dialdehyde starch (DAS) for a potential drug release application. The compatibility of FK/PVA was improved when cross-linked by DAS: the relative crystallinity of the PVA/FK film slightly decreased, and the enthalpy value for the melting peak decreased by about 50% for the cross-linked films. The total soluble mass of all blend films in water was below 35% at 37 °C, indicating a good stability of the films in water. The results of the Rhodamine B dye (as a model drug) release tests showed that the release rates decreased with increasing DAS content. DAS-induced cross-linking improves several important properties of the FK/PVA films, such as the compactness, the compatibility, and the stability in water. These improvements offer the potential to expand the application of FK films in the biomaterial field. OPEN ACCESSPolymers 2015, 7 581

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Preparation and characterization of keratin–chitosan composite film

Cited by 288 publications

References 12 publications

Synthesis and Characterization of Silver/Clay/Chitosan Bionanocomposites by UV-Irradiation Method

Synthesis and Characterization of Silver/Clay/Chitosan Bionanocomposites by UV-Irradiation Method

Alternative Methods of Preparation of Soluble Keratin from Chicken Feathers

Keratin/Polyvinyl Alcohol Blend Films Cross-Linked by Dialdehyde Starch and Their Potential Application for Drug Release

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