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Study and Comparison the Photodegrdation and Biodegradation of Poly Vinylchloride in Absence and Presence Alizarin Dye And 2- (Benzylidine) Benzothiazole Hydrazone - Pd Complex | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 24, Issue 1, 2013, Pages 93-104 | ||
| Author | ||
| Zainab Naeif Majeed | ||
| Abstract | ||
| The induced photodegradation of poly vinylchloride films in air was investigated (for 200 hrs.) in the presence and absence of alizarin dye (as organic dye) and 2- (benzylidine) benzothiazole hydrazone - pd complex (as inorganic dye) (photosensitizer) by accelerated weathering tester. The addition of (0.1wt %) of alizarin dye or 2- (benzylidine) benzothiazole hydrazone - pd complex to poly vinylchloride films (25µm in thickness) enhanced the photodegradation of the polymer films. The photodegradation rate was followed by increase in carbonyl absorbance of polymers using infrared (I.R.) and UV-visible. spectra respectively. According to the spectra results, the induced photodegradation mechanisms of polymer films were suggested under the experimental conditions employed using UV-radiation at λ = 313 nm , light intensity 3.49*10-5 einsteins.dm-3.S-1 at temperature 45 oC. The biodegradability of photodegradable polymers has been also studied using isolated bacteria from crude oil (Pseudomonas aeuroginosa ).This type of bacteria is known to be capable of utilizing the degraded polymers. The concluded from this work the alizarin dye enhance degradation of polymer than Pd complex. | ||
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