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The influence of UV-irradiation on thermal and mechanical properties of chitosan and silk fibroin mixtures.
J Photochem Photobiol B. 2014 Nov; 140:301-5.JP

Abstract

In the present paper the results regarding the influence of UV-irradiation with 254 nm wavelength on the thermal and mechanical properties and the intrinsic viscosity of chitosan/silk fibroin mixtures are presented. The mixture of chitosan and silk fibroin in solution and thin films made of chitosan/silk fibroin mixture obtained by solvent evaporation were submitted to the treatment with UV irradiation (wavelength 254 nm) for different time intervals. Mechanical properties of thin films made of chitosan/silk fibroin blends before and after UV-irradiation have been investigated by mechanical testing machine and compared with mechanical properties of chitosan films. The changes in such mechanical properties as ultimate breaking strength, percentage of elongation at break and Young Modulus have been investigated. The results have shown, that the mechanical properties of the blends were greatly affected by time of exposure to UV irradiation. Ultimate tensile strength and ultimate percentage of elongation decreased after UV irradiation of the blend. Increasing UV irradiation led to the decrease in Young's Modulus of the chitosan/silk fibroin blend. Viscosity of chitosan/silk fibroin mixtures decreased after UV-irradiation. Thermal properties of the mixtures have been only slightly altered by UV-irradiation.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Sionkowska A
Nicolaus Copernicus University, Faculty of Chemistry, Biomaterials and Cosmetics Department, ul. Gagarina 7, 87-100 Toruń, Poland. Electronic address: as@chem.umk.pl.
Płanecka A
Nicolaus Copernicus University, Faculty of Chemistry, Biomaterials and Cosmetics Department, ul. Gagarina 7, 87-100 Toruń, Poland.
Lewandowska K
Nicolaus Copernicus University, Faculty of Chemistry, Biomaterials and Cosmetics Department, ul. Gagarina 7, 87-100 Toruń, Poland.
Michalska M
Nicolaus Copernicus University, Faculty of Chemistry, Biomaterials and Cosmetics Department, ul. Gagarina 7, 87-100 Toruń, Poland.

MeSH

ChitosanElastic ModulusFibroinsMechanical PhenomenaTemperatureTime FactorsUltraviolet RaysViscosity

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25218587

Citation

Sionkowska, Alina, et al. "The Influence of UV-irradiation On Thermal and Mechanical Properties of Chitosan and Silk Fibroin Mixtures." Journal of Photochemistry and Photobiology. B, Biology, vol. 140, 2014, pp. 301-5.
Sionkowska A, Płanecka A, Lewandowska K, et al. The influence of UV-irradiation on thermal and mechanical properties of chitosan and silk fibroin mixtures. J Photochem Photobiol B. 2014;140:301-5.
Sionkowska, A., Płanecka, A., Lewandowska, K., & Michalska, M. (2014). The influence of UV-irradiation on thermal and mechanical properties of chitosan and silk fibroin mixtures. Journal of Photochemistry and Photobiology. B, Biology, 140, 301-5. https://doi.org/10.1016/j.jphotobiol.2014.08.017
Sionkowska A, et al. The Influence of UV-irradiation On Thermal and Mechanical Properties of Chitosan and Silk Fibroin Mixtures. J Photochem Photobiol B. 2014;140:301-5. PubMed PMID: 25218587.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The influence of UV-irradiation on thermal and mechanical properties of chitosan and silk fibroin mixtures. AU - Sionkowska,Alina, AU - Płanecka,Anna, AU - Lewandowska,Katarzyna, AU - Michalska,Marta, Y1 - 2014/09/03/ PY - 2014/06/05/received PY - 2014/07/29/revised PY - 2014/08/24/accepted PY - 2014/9/15/entrez PY - 2014/9/15/pubmed PY - 2015/7/22/medline KW - Chitosan KW - Mechanical properties KW - Photodegradation KW - Photooxidation KW - Polymer mixtures KW - Silk fibroin KW - Thermal properties KW - UV-irradiation SP - 301 EP - 5 JF - Journal of photochemistry and photobiology. B, Biology JO - J Photochem Photobiol B VL - 140 N2 - In the present paper the results regarding the influence of UV-irradiation with 254 nm wavelength on the thermal and mechanical properties and the intrinsic viscosity of chitosan/silk fibroin mixtures are presented. The mixture of chitosan and silk fibroin in solution and thin films made of chitosan/silk fibroin mixture obtained by solvent evaporation were submitted to the treatment with UV irradiation (wavelength 254 nm) for different time intervals. Mechanical properties of thin films made of chitosan/silk fibroin blends before and after UV-irradiation have been investigated by mechanical testing machine and compared with mechanical properties of chitosan films. The changes in such mechanical properties as ultimate breaking strength, percentage of elongation at break and Young Modulus have been investigated. The results have shown, that the mechanical properties of the blends were greatly affected by time of exposure to UV irradiation. Ultimate tensile strength and ultimate percentage of elongation decreased after UV irradiation of the blend. Increasing UV irradiation led to the decrease in Young's Modulus of the chitosan/silk fibroin blend. Viscosity of chitosan/silk fibroin mixtures decreased after UV-irradiation. Thermal properties of the mixtures have been only slightly altered by UV-irradiation. SN - 1873-2682 UR - https://www.unboundmedicine.com/medline/citation/25218587/The_influence_of_UV_irradiation_on_thermal_and_mechanical_properties_of_chitosan_and_silk_fibroin_mixtures_ DB - PRIME DP - Unbound Medicine ER -