Anthraquinone derivatives as organic stabilizers for rigid poly(vinyl chloride) against photo-degradation |
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Authors: | Magdy W Sabaa Riham R Mohamed |
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Institution: | Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt |
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Abstract: | Anthraquinone derivatives have been prepared and investigated as photo-stabilizers for rigid PVC by measuring the extent of weight loss (%), the amount of gel formation as well as the intrinsic viscosity of the soluble fractions of the degraded polymer. The results indicated a reasonable stabilizing effect of these derivatives compared with UV-commercially used stabilizers. A synergistic effect is achieved when the anthraquinone derivatives are mixed with UV-absorbers in a weight ratio of 75% of investigated organic stabilizer and 25% of reference stabilizer.A probable radical mechanism is proposed to account for the stabilizing action of the organic investigated materials. |
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Keywords: | PVC Poly(vinyl chloride) UV-absorbers Anthraquinone derivatives Intrinsic viscosity Gel content (%) |
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