ATR-FTIR and UV-vis spectroscopy studies of microwave oven-generated oxygen plasma modification for PVA films | ||||
| Egyptian Journal of Solids | ||||
| Article 1, Volume 44, Issue 1, 2022, Page 26-41 PDF (1.49 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejs.2022.145459.1037 | ||||
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| Authors | ||||
Shrouk Fathy Elashry   1; Huda Elsaeed2; Nabil El-Siragy3
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| 1Physics department, Faculty of science, Tanta university | ||||
| 2Physics department, Faculty of science, Tanta University | ||||
| 3Physics Department, Faculty of science, Tanta University | ||||
| Abstract | ||||
| In this study, a microwave oven-based plasma generation process is disclosed that is both easy and low-cost. A Paschen-like curve is observed. Because of polyvinyl alcohol (PVA) polymer's excellent properties, it can be used in many fields, including food packaging and agriculture, after plasma treatment. A solution-casting approach was used to create pure polyvinyl alcohol (PVA) film. In the second regime, Oxygen plasma treatment was used to modify the PVA surface at a constant power of 1000W with different O2 flow rates and pressures. XRD, ATR-FTIR, and UV-vis spectra were used to examine the surface properties of the films. An X-ray study revealed that the pure PVA film is semicrystalline in nature. The transmission peaks of the treated plasma film are clearly intense at 15 sec, 26 mbar, and 6 L/min. At 26 mbar, a slight peak shift towards higher wavenumbers is observed, corresponding to the C-O stretching of acetyl groups. The highest transmittance, nearly 64 percent, is found in the UV region of the UV-vis spectra at the same optimised conditions as FTIR. As a result of these findings, PVA became a transparent material for greenhouses. | ||||
| Keywords | ||||
| Microwave oven- based Oxygen plasma generation; PVA; Paschen like curves; FTIR; UV-vis | ||||
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