As poly(vinyl chloride) (PVC) photodegrades with long-term exposure to ultraviolet radiation, it is desirable develop methods that enhance the photostability of PVC. In this study, new aromatic-rich diorganotin(IV) complexes were tested as photostabilizers in PVC films. The synthesized 79-86% yields by reacting excess naproxen tin(IV) chlorides. films containing 0.5 wt % irradiated light for up 300 h, and changes within monitored using weight loss formation specific functional groups...

Poly(vinyl chloride) (PVC), a polymer widely used in common household and industrial materials, undergoes photodegradation upon ultraviolet irradiation, leading to undesirable physicochemical properties reduced lifetime. In this study, four telmisartan organotin(IV) compounds were tested as photostabilizers against photodegradation. PVC films (40-µm thickness) containing these (0.5 wt%) irradiated with light at room temperature for up 300 h. Changes various polymeric parameters, including...

Novel, porous, highly aromatic organotin(IV) frameworks were successfully synthesized by the condensation of telmisartan and an appropriate tin(IV) chloride. The structures complexes elucidated elemental analysis, 1H-, 13C-, 119Sn-NMR, FTIR spectroscopy. surface morphologies inspected field emission scanning electron microscopy. mesoporous have a Brunauer-Emmett-Teller (BET) area 32.3-130.4 m2·g-1, pore volume 0.046-0.162 cm3·g-1, size around 2.4 nm. tin containing butyl substituent more...

Poly(vinyl chloride), PVC, has many attractive properties, including low cost of manufacture, resistance to acid and alkali corrosion, ease molding. However, PVC suffers from aging in harsh conditions, leading the shortening its useful life. Stability irradiation, for example, can be improved through incorporation additives PVC. The design, synthesis, application new stabilizers continue attract attention. current work investigates effect three tin–cephalexin complexes on stability...

Tetra Schiff bases were used as thermal stabilizers to enhance the properties of polyvinyl chloride (PVC) when operated at high temperatures. The stability PVC films doped with was tested by weight-loss method, Fourier transform infrared (FTIR) spectroscopy, aging test, optical microscope, and atomic force microscope (AFM). Results showed that embedding these additives increased time polymer, which decreased degradation reaction tendency. Furthermore, primary color improved adding using...

On the 31st of December 2019, China reported several pneumonia-like infections in Wuhan's Huanan Seafood Wholesale Market. Ten days later, a novel coronavirus (2019-nCoV) was announced by Chinese center for disease control (CCDC). At that time, genome sequence publicly made available. The analysis newly identified virus found similar to 75-80% SARS-CoV clade and more than 88% bat corona viruses. January 30th, World Health Organization (WHO) declared state emergency due COVID-19 epidemic. In...

New photostabilizers of poly(vinyl chloride) (PVC) were synthesized and investigated the photostabilizing efficiency polymer films by ultraviolet (UV) experiment. The rate photodecomposition constant have been calculated for PVC as a method evaluating organotin(IV) complexes that used after 300 hour irradiation. results showed additives had reduced significantly with comparison to (blank). (kd) value was highest in absence any additives, lowest presence triphenyltin (IV) complex.

This study develops a process for enhancing the photostabilization of PVC films blended with low concentration mefenamate–tin complex. One tri-substituted and three di-substituted organotin complexes containing mefenamate unit are synthesized, their chemical structures established. The reactions mefenamic acid number substituted tin chlorides gave corresponding in 70–77% yields. Tin were thin films. effect addition additives against long-term irradiation (290–400 nm, 300 h) is also tested....

Using appropriate organotin chloride salts and a ligand called 2-[(2,3-dimethylphenyl) amino] benzoic acid (DMPAB), condensation procedure produced novel complexes such as triphenyltin, dimethyl, diphenyl, dibutyl-tin. For difficult identification, variety of analytical methods were used, including elemental analysis, carbon proton magnetic resonance, infrared spectra. The agar ditch method was used to assess the antibacterial effectiveness against Staphylococcus aureus Escherichia coli....

ABSTRACT. 4-Aminoantipyrine was used as ligand to prepare new complexes of triphenyltin, di-butyl and dimethyl-tin by condensation reaction with the corresponding organotin chloride salts. The were identified different techniques, such infrared spectra, (tin proton) magnetic resonance elemental analyses. antioxidant activity 4-aminoantipyrine prepared studied two methods; Free radical scavenging DPPH CUPRRAC methods. Tri di-tin gave high percentage inhibition than both methods due tin...

The present work is concerned to study the optical constants of PVA/BaSO 4 composites at different concentrations barium sulphate.The samples are prepared by casting method technique with proportion PVA and BaSO .The absorption transmission spectra have been recorded wavelength ranges (200-800)nm using (UV/160/Shimadzu spectrophotometer).The results show that (The coefficient, extinction coefficient energy gap indirect allowed forbidden transition) vary concentration sulphate dopant.

Oriental Journal of Chemistry is a peer reviewed quarterly research journal pure and applied chemistry. It publishes standard papers in almost all thrust areas current chemistry academic commercial importance. provides platform for rapid publication quality papers, reviews letters. abstracted indexed reputed National International agencies.

Poly(vinyl chloride) suffers from degradation through oxidation and decomposition when exposed to radiation high temperatures. Stabilizers are added polymeric materials inhibit their enable use for a longer duration in harsh environments. The design of new additives stabilize poly(vinyl is therefore desirable. current study includes the synthesis tin complexes 4-methoxybenzoic acid investigates potential as photostabilizers chloride). reaction substituted chlorides gave corresponding good...

ABSTRACT. 4-Sulfosalicylic acid (SSA) was used as a ligand to prepare new triphenyltin and dimethyl-tin complexes by condensation with the corresponding organotin chloride salts. The were identified different techniques, such infrared spectra (tin proton), magnetic resonance, elemental analyses. 119Sn-NMR studied determine prepared complexes' geometrical shape. Two methods examined antioxidant activity of complexes; Free radical scavenging (DPPH) CUPRRAC methods. Tri di-tin gave high...

Poly(vinyl chloride) degrades when exposed to ultraviolet light for long durations; therefore, the photostability of polymeric materials should be enhanced through application additives. New organotin complexes containing 4-aminonaphthalene-1-sulfonic acid were synthesized and their role as poly(vinyl photostabilizers evaluated. The reaction 4-amino-3-hydroxynaphthalene-1-sulfonic appropriate di- or trisubstituted tin chloride (triphenyltin chloride, tributyltin dibutyltin dichloride,...