Induction of Photodegradation of Poly(vinyl alcohol) Using a Cobalt Binary Mixed Ligand Complex | ||
Journal of University of Anbar for Pure Science | ||
Article 18, Volume 17, Issue 2, December 2023, Pages 115-125 PDF (935.67 K) | ||
Document Type: Research Paper | ||
DOI: 10.37652/juaps.2023.141493.1097 | ||
Authors | ||
yasmeen mouthna al-mhmdy* 1; Hameed Khalid Ali2; Omar Hamad Shihab3 | ||
1Department of Chemistry, College of Education for Pure Science , University Of Anbar, Ramadi, Iraq. | ||
2Department of Chemistry, College of Education for Pure Science , University Of Anbar, Ramadi, Iraq; | ||
3Department of Chemistry, College of Science, Univ. of Al-Anbar, Ramadi, Iraq | ||
Abstract | ||
The present study included optical degradation of pure polyvinyl films and also when mixing the complex [Aqua diphylcarbazide thiourea Cobalt (||)]chloride by weight (0.1% - 0.00625 %) and polymer films dissolved in water and thickness (60±5) microns. The optical degradation of the prepared chips was followed up with the presence and absence of the added complex by violet-visible spectroscopy (U.V) using light with a maximum wavelength (356nm) and at different irradiation times (0,10,20,40,80) hours by calculating the constant rate of photolysis of the polymer additive. Using (FT. IR) by increasing the absorption coefficient of the hydroxyl group (IOH). It was found that an increase in the concentration of the additive complex leads to an increase in the photolysis of polymer sheets compared to sheets without it, which in turn leads to an increase in the values of hydroxyl absorption coefficients. These results are consistent with the value of the speed constant of optical degradation the highest value of the dissociation constant (KD) and follow-up by changing the viscosity to weight ratio, degree of degradation and rate of chain cutting. | ||
Keywords | ||
optical segmentation,,; ,،PVA,,; ,،mixed ligands | ||
References | ||
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