Surface characterization of biodegradable nanocomposites by dynamic speckle analysis
Starch/kefiran/ZnO nanocomposite films may exhibit different physicochemical properties depending on the distribution of ZnO nanoparticles. As a result of UV exposure, the hydrophobicity of the nanoparticles may be modified, resulting in their dispersion in the polymer matrix. The aim of this paper...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-08-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666523923000648 |
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| author | Ramin Jamali Amin Babaei-Ghazvini Elaheh Nazari Majid Panahi Iman Shahabi-Ghahfarrokhi Ali-Reza Moradi |
| author_facet | Ramin Jamali Amin Babaei-Ghazvini Elaheh Nazari Majid Panahi Iman Shahabi-Ghahfarrokhi Ali-Reza Moradi |
| author_sort | Ramin Jamali |
| collection | DOAJ |
| description | Starch/kefiran/ZnO nanocomposite films may exhibit different physicochemical properties depending on the distribution of ZnO nanoparticles. As a result of UV exposure, the hydrophobicity of the nanoparticles may be modified, resulting in their dispersion in the polymer matrix. The aim of this paper is to characterize starch/kefiran/ZnO nanocomposite films using dynamic speckle analysis. In this experiment, speckle patterns of the nanocomposite are acquired in situ under controlled moisture, pressure, and temperature conditions. This is followed by a statistical postprocessing procedure to determine the deformation pattern of the nanocomposite. A numerical analysis of the successive speckle patterns is used to determine the time evolution of sample deformation. There is a correlation between the intensity and contrast of speckle patterns and the temporal alteration of the polymer. Several factors have been considered to examine the structural evolution of the nanocomposite, including time history speckle pattern, co-occurrence, graphical speckle contrast, roughness parameter, auto-correlation, and Shannon entropy. The variation and overall viscoelastic properties of the nanocomposites are expressed via several statistical parameters. The changes in the computed parameters are attributed to the time-varying activity of the samples during their higher hydrophilicity. |
| first_indexed | 2024-03-12T17:51:23Z |
| format | Article |
| id | doaj.art-4193578dc48d4ec5be94cfe03688da15 |
| institution | Directory Open Access Journal |
| issn | 2666-5239 |
| language | English |
| last_indexed | 2024-03-12T17:51:23Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj.art-4193578dc48d4ec5be94cfe03688da152023-08-03T04:23:41ZengElsevierApplied Surface Science Advances2666-52392023-08-0116100429Surface characterization of biodegradable nanocomposites by dynamic speckle analysisRamin Jamali0Amin Babaei-Ghazvini1Elaheh Nazari2Majid Panahi3Iman Shahabi-Ghahfarrokhi4Ali-Reza Moradi5Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137–66731, IranDepartment of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan S7N 5A9, CanadaDepartment of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137–66731, IranDepartment of Physics, Faculty of Science, University of Zanjan, Zanjan 45371-38791, IranDepartment of Food Science and Technology, Faculty of Agriculture, University of Zanjan, Zanjan, 45371-38791, IranCorresponding author.; Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137–66731, Iran; School of Nano Science, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5531, IranStarch/kefiran/ZnO nanocomposite films may exhibit different physicochemical properties depending on the distribution of ZnO nanoparticles. As a result of UV exposure, the hydrophobicity of the nanoparticles may be modified, resulting in their dispersion in the polymer matrix. The aim of this paper is to characterize starch/kefiran/ZnO nanocomposite films using dynamic speckle analysis. In this experiment, speckle patterns of the nanocomposite are acquired in situ under controlled moisture, pressure, and temperature conditions. This is followed by a statistical postprocessing procedure to determine the deformation pattern of the nanocomposite. A numerical analysis of the successive speckle patterns is used to determine the time evolution of sample deformation. There is a correlation between the intensity and contrast of speckle patterns and the temporal alteration of the polymer. Several factors have been considered to examine the structural evolution of the nanocomposite, including time history speckle pattern, co-occurrence, graphical speckle contrast, roughness parameter, auto-correlation, and Shannon entropy. The variation and overall viscoelastic properties of the nanocomposites are expressed via several statistical parameters. The changes in the computed parameters are attributed to the time-varying activity of the samples during their higher hydrophilicity.http://www.sciencedirect.com/science/article/pii/S2666523923000648NanocompositeSurface characterizationUV RadiationSpeckle pattern analysisHydrophilicity |
| spellingShingle | Ramin Jamali Amin Babaei-Ghazvini Elaheh Nazari Majid Panahi Iman Shahabi-Ghahfarrokhi Ali-Reza Moradi Surface characterization of biodegradable nanocomposites by dynamic speckle analysis Applied Surface Science Advances Nanocomposite Surface characterization UV Radiation Speckle pattern analysis Hydrophilicity |
| title | Surface characterization of biodegradable nanocomposites by dynamic speckle analysis |
| title_full | Surface characterization of biodegradable nanocomposites by dynamic speckle analysis |
| title_fullStr | Surface characterization of biodegradable nanocomposites by dynamic speckle analysis |
| title_full_unstemmed | Surface characterization of biodegradable nanocomposites by dynamic speckle analysis |
| title_short | Surface characterization of biodegradable nanocomposites by dynamic speckle analysis |
| title_sort | surface characterization of biodegradable nanocomposites by dynamic speckle analysis |
| topic | Nanocomposite Surface characterization UV Radiation Speckle pattern analysis Hydrophilicity |
| url | http://www.sciencedirect.com/science/article/pii/S2666523923000648 |
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