Author/Authors :
Yousif, Emad Al-Nahrain University - College of Science - Department of Chemistry, Iraq , Abdallh, Mustafa Al-Nahrain University - College of Science - Department of Chemistry, Iraq , Hashim, Hassan Al-NahrainUniversity - College of Science - Department of Physics, Iraq , Salih, Nadia Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Malaysia , Salimon, Jumat Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Malaysia , Abdullah, Bashar Mudhaffar Universiti Kebangsaan Malaysia - School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Malaysia , Win, Yip-Foo Universiti Tunku Abdul Rahman, Perak Campus - Faculty of Science - Department of Chemical Science, Malaysia
Abstract :
Background: In this study, poly(vinyl chloride) (PVC) is considered one of the most versatile plastics. It is the second largest manufactured resin by volume worldwide. Results: To study the optical properties of modified PVC containing 1,3,4-thiadiazole and phthalyl groups in the repeating units, thin films of the prepared polymers (P I, P II, P III, P IV, P V, and PVC) were casted from tetrahydrofuran solvent with a thickness of 30 μm. The optical properties were studied in the range of 200 to 600 nm, and the optical data were analyzed and interpreted in terms of the theory of phonon-assisted direct electronic transitions; the measured Eg of pure and modified PVC increases in the following order: P II; PIV; PV; PI; PIII; and PV→C. Also, the refractive index was measured. Conclusions: The results showed that for all compositions, the refractive index decreases with increasing wavelength.
