Effects of UV irradiation on the wettability of chitosan films containing dansyl derivatives
| Autor: | A.J.C. da Silva, Adriana S. Ribeiro, I. N. de Oliveira, R. de C. C. da Silva, Josealdo Tonholo, A.P.P. Praxedes, R.P.A. Lima |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Ultraviolet Rays macromolecular substances Wetting phenomena Dynamic contact Chitosan Biomaterials chemistry.chemical_compound Solid substrate Colloid and Surface Chemistry Dansyl Organic chemistry Molecule Irradiation UV irradiation technology industry and agriculture Statistical dynamics Uv sensitivity Electronic Optical and Magnetic Materials Surfaces Coatings and Films chemistry Chemical engineering Phosphatidylcholines Wettability Wetting |
| Zdroj: | Journal of Colloid and Interface Science. 376(1):255-261 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2012.02.056 |
| Popis: | The morphological and wetting properties of chitosan films containing dansyl derivatives have been investigated. By means of dynamic contact angle measurements, we study the modification of surface properties of chitosan-based films due to UV irradiation. The results were analyzed in the light of the molecular-kinetic theory which describes the wetting phenomena in terms of the statistical dynamics for the displacement of liquid molecules in a solid substrate. Our results show that the immobilization of dansyl groups in the chitosan backbone leads to a pronounced enhancement of the UV sensitivity of polymeric films. |
| Databáze: | OpenAIRE |
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