Tin Complexes of 4-(Benzylideneamino)benzenesulfonamide: Synthesis, Structure Elucidation and Their Efficiency as PVC Photostabilizers

Polymers

Emad Yousif¹  Hassan Ghani¹  Dina S. Ahmed²  Gamal A. El-Hiti³  Benson M. Kariuki⁴ 

[1] Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq;Department of Medical Instrumentation Engineering, Al-Mansour University College, Baghdad 64021, Iraq;Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia;School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK;

关键词: poly(vinyl chloride);    photostabilization;    4-(benzylideneamino)benzenesulfonamide;    weight loss;    organotin complexes;    surface morphology;   

DOI  :  10.3390/polym13152434

来源: DOAJ

【 摘 要 】

Poly(vinyl chloride) (PVC) suffers from photo-oxidation and photodegradation when exposed to harsh conditions. Application of PVC thus relies on the development of ever more efficient photostabilizers. The current research reports the synthesis of new complexes of tin and their assessment as poly(vinyl chloride) photostabilizers. The three new complexes were obtained in high yields from reaction of 4-(benzylideneamino)benzenesulfonamide and tin chlorides. Their structures were elucidated using different tools. The complexes were mixed with poly(vinyl chloride) at a very low concentration and thin films were made from the blends. The effectiveness of the tin complexes as photostabilizers has been established using a variety of methods. The new tin complexes led to a decrease in weight loss, formation of small residues, molecular weight depression, and surface alteration of poly(vinyl chloride) after irradiation. The additives act by absorption of ultraviolet light, removal the active chlorine produced through a dehydrochlorination process, decomposition of peroxides, and coordination with the polymeric chains. The triphenyltin complex showed the greatest stabilizing effect against PVC photodegradation as a result of its high aromaticity.

【 授权许可】

Unknown