Document Type : Research Paper


1 Department of Chemistry, College of Education for Pure Science , University Of Anbar, Ramadi, Iraq.

2 Department of Chemistry, College of Education for Pure Science , University Of Anbar, Ramadi, Iraq;

3 Department of Chemistry, College of Science, Univ. of Al-Anbar, Ramadi, Iraq


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.


Main Subjects

  • Teodorescu, M.; Bercea, M.; Morariu, S. Biomaterials of PVA and PVP in Medical and Pharmaceutical Applications: Perspectives and Challenges. Biotechnol. Adv. 2019, 37, 109–131.
  • Pravasi, SD Acetic Acid. In Encyclopedia of Toxicology; Elsevier: Amsterdam, The Netherlands, 2014; pp. 33–35.
  • Matsumura, S. Biodegradation of Poly(Vinyl Alcohol) and Its Copolymers. In Biopolymers Online; Steinbuchel: Leverkusen, Germany, 2005.
  • Mallapragada, SK; McCarthy-Schroeder, S. Poly (Vinyl Alcohol) as a Drug Delivery Carrier. In Handbook of Pharmaceuticals Controlled Release Technology; Wise, DL, Ed.; CRC Press: Boca Raton, FL, USA, 2000; pp. 31–46.
  • Langer, R. New Methods of Drug Delivery. Science 1990, 249, 1527–1533.
  • Gajra, B.; Pandya, SS; Vidyasagar, G.; Rabari, H.; Dedania, RR; Rao, S. Poly Vinyl Alcohol Hydrogel and Its Pharmaceutical andBiomedical Applications: A Review. Int. J. Pharm. Res. 2012, 4, 20–26.
  • Wahid, H.; Ahmad, S.; Nor, MAM; Rashid, MA Fundamentals and Applications of Controlled Release Drug Delivery; Springer: Boston, MA, USA, 2017; Volume 51, ISBN 9788578110796
  • Valkoa, L., Kleinb. E and Simonb, P. (2001). Europolymer. JP37, 1123.
  • Kaczmarck, H. and Rabek, JF (1997). Die Angewonote Makromole color chemie P. 247.8
  • Pospisil, JD, (1994). Polymer Composites. Makrolekular Chemie,P. 216, 55.
  • Rabek, JF (1987). Mechanisms of Photophysical Processes and Photochemical Reactions in Polymers. John Wiley and sons, New York. PP478, 571.
  • Allen, NS and McKellar, JF (1980). Photo chemistry of Dyed and Pigmented. Applied Science Publishers, Ltd., London, p.247.17.
  • Mansor AL Derzi, NW (2004). Induced Photodegradation Thermo Plastic Polymers by Molybdenum Complexes, Ph.D. Thesis, Technology University.
  • Games, AM and Brjord, FE (1986). Practical Physical Chemistry Third Edition, Oxford Press.
  • Kuzina, SI and Mikhailovm, AI (1998), Eur Polymer. JP34, 1157
  • Beggiato, G. Bortouls, Gordini, P.S and Minto, F. Chim. Ind. (Milan), (1978), 60,10.
  • Aqeel Amer Hammad, Omar Hamad Al-Obaidi and Khalid F. AL-Rawi (2022) Preparation and characterization of mixed complexes for some transitional elements of the flavonoid ligand. Biochem. Cell. Arch. 22, 171-175. DocID:
  • Mohammed, Akram & Al-Daher, Abdul Ghany & Mohammad, Hikmat & Harrison, Roger. (2022). Synthesis and Characterization of Polydentate macrocyclic Schiff bases (14- membered atoms) and their complexes with Co (II), Ni (II), Cu (II) and Zn (II) ions.
  • fathi, A., & alshaheen, A. (2020). Synthesis and Identification of Some Complexes of 4-[N-(2,4-Dihydroxybenzylidene ) imino] Antipyrinyl with Serine (L1) or with Theronine (L2) Ligands and Evaluation of Their Bacteria Activities. Journal of Education and Science, 29(4), 42-61. doi:10.33899/edusj.2020.126837.1058
  • Ravi B, Mr & Amirthalingam, Jegatheesan & Neelakandaprasad, B & Sadeeshkumar, C & Rajarajan, Dr G. (2014). OPTICAL AND CONDUCTIVITY ANALYSIS OF THIOUREA SINGLE CRYSTALS. 7.
  • Lucki, J and Ranby, B. (1979). J. Poly. Deg-stab. P.1,1.22
  • Springsteen,KR(1977).Inorg. chem.Acta. P.23,13.
  • Chiantore, O., Camino, G. and Costa, L. (1981). polym. Deg. Stab., p. 209.3.
  • Chandra, R. and Handa, SP (1982).J.Appl.Polym.Sci.,p.1945,27.78
  • Ranby, B. and Rabek, JF (1975). Photodegradation, Photooxidation, Photostabilization of Polymers, Wiley-Interscience Publication, Lonodon.
  • Fernandes, D. M., Hechenleitner, A. W., Lima, S. M., Andrade, L. H. C., Caires, A. R. L., and Pineda, E. G.," Preparation, characterization, andphoto luminescence study of PVA/ZnO nano composite films", Materials Chemistry and Physics, Vol.128 (3), 371-376 (2011)