عنوان المقالة:Spectroscopic study of the effect of a new metal chelate on the stability of PVC
سلام عباس حسن | Salam A.H. Al-Ameri | 4789
نوع النشر
مجلة علمية
المؤلفون بالعربي
مجلة علمية
الملخص العربي
This work deals with the preparation of a new tetradentate ligand [ H2L] of the N2O2 type, N{2[3(1-carboxyiminoethyl)-1-phenyl]butilydene-2-amino propionic acid}, and its metal complexes with Cr(III), Fe(III), Cu(II) and Zn(II) and fully characterized by H1 NMR, C13 NMR, FT-IR, UV–Vis, CHN elemental analysis, magnetic moment and molar conductance in DMF solutions. Based on the experimental results obtained, octahedral geometries of Cr(III) and Fe(III) have been suggested, while Cu(II) and Zn(II) had square planar and tetrahedral symmetries, respectively. The effect of this new metal complex on the photo degradation of poly(vinyl chloride) PVC films blended with a concentration range of 2–2.5% by weight of this new complex was investigated. The changes in the average molecular weight of PVC with irradiation time were tracked to determine the order of activities of each metal complex toward the photodegradation of PVC, andthe photodeg- radation of PVC films was determined by measuring carbonyl, hydroxyl and polyene indices. The results showed that Cr(III) and Fe(III) complexes increase the rate of C–C cleavage and behave as UV photo degradation substances, while the Zn(II) complex behaves as a UV stabilizer.
تاريخ النشر
06/11/2013
الناشر
Journal of the Association of Arab Universities for Basic and Applied Sciences
رابط DOI
http://dx.
رابط الملف
تحميل (206 مرات التحميل)
الكلمات المفتاحية
PVC, Photo degradation, Schiff base, Alanine, Benzoyl acetone
رجوع