عنوان المقالة:Synthesis and characterization of gallic acid derivatives and their utilized as organic photo-stabilizers for poly (vinyl chloride) Synthesis and characterization of gallic acid derivatives and their utilized as organic photo-stabilizers for poly (vinyl chloride)
غسان قيس علي | Ghassan Qays Ali | 4866
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- Ivan Hameed R. Tomi & Gassan Q. Ali & Alaa H. Jawad & Emad Yousif
- المؤلفون بالإنجليزي
- Ivan Hameed R. Tomi & Gassan Q. Ali & Alaa H. Jawad & Emad Yousif
- الملخص العربي
- Abstract The photo-stabilization of poly (vinyl chloride) containing 1,3,4-thiadiazole derivatives derived from Gallic acid as additives were studied. The four different substituents of 1,3,4-thiadiazole-gallic derivatives, 2-(4-substituted-phenyl)-5-(3,4,5-trimethoxyphenyl)-1,3,4-thiadiazole, (R1-R4) were prepared starting from Gallic acid and characterized by FTIR, 1 HNMR and elemental analysis. The 5% concentration by weight of these derivatives (R1-R4) in PVC polymer was used to study the photo-stabilization of PVC. The photostabilization of PVC films were studied at room temperature under irradiation of U.V light with λ = 385 nm and an intensity of 7.75 × 10−7 Einstein dm−3 s −1 . The photo-stabilization activity of these compounds was determined by monitoring the carbonyl (ICO), polyene (Ipo) and hydroxyl (IOH) indices and weight loss method with irradiation time. It was found that the (ICO), (Ipo) and (IOH) index values increased with the irradiation time increase, this increase found to depend on the type of additives, also it was found that the PVC films in the presence of additives (R1-R4) were arranged as the following trend: PVC + R1 > PVC + R2 > PVC + R3 > PVC + R4.
- تاريخ النشر
- 10/07/2017
- الناشر
- Journal of Polymer Research
- رقم المجلد
- 24
- رقم العدد
- 8
- ISSN/ISBN
- 1572-8935
- رابط DOI
- DOI 10.1007/s10965-017-1283-7
- الصفحات
- 119
- رابط خارجي
- https://link.springer.com/article/10.1007/s10965-017-1283-7
- الكلمات المفتاحية
- s 1,3,4-thiadiazole derivatives . Organic photo-stabilizers . PVC