Induction of Photodegradation of Poly(vinyl alcohol) Using a Cobalt Binary Mixed Ligand Complex

Al-mhmdy, Yasmeen Mouthna; Ali, Hameed Khalid; Shihab, Omar Hamad

doi:10.37652/juaps.2023.141493.1097

	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

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