Effect of UV-irradiation on the optical properties of transparent PET polymeric foils
作者： Aneesh Nair , Piyush Sharma , Vishal Sharma , P.K. Diwan
DOI: 10.1016/J.MATPR.2020.01.330
关键词:
摘要: Abstract Polyethylene-terephthalate (PET) polymeric foils were irradiated with UV-irradiation for different time durations (16, 30, 40 hrs). The effect due to the UV irradiation at duration is investigated by UV-Vis spectroscopy and Fourier Transform Infrared (FTIR) spectroscopy. From optical density or absorbance energy band gap (Eg) determined. Further, tail width of localized states in was determined through Urbach’s method. present results reveal that decreases from 3.97eV 3.88eV pure/unirradiated hrs respectively. Whereas, Urbach (Eo) increases 0.035eV 0.059eV increase Such decrease may be associated augmented conjugation PET polymer samples formation large number ion pairs during covalent bond breakage caused photons as observed FTIR spectrums.
sci-hub.se 参考文章(9)
Robert O. Ebewele, Polymer Science and Technology CRC Press. ,(2000) , 10.1201/9781420057805
D. Fink, W. H. Chung, R. Klett, A. Schmoldt, J. Cardoso, R. Montiel, M. H. Vazquez, L. Wang, F. Hosoi, H. Omichi, P. Goppelt-Langer, Carbonaceous clusters in irradiated polymers as revealed by UV-Vis spectrometry Radiation Effects and Defects in Solids. ,vol. 133, pp. 193- 208 ,(1995) , 10.1080/10420159508223990
J. Tauc, R. Grigorovici, A. Vancu, Optical Properties and Electronic Structure of Amorphous Germanium physica status solidi (b). ,vol. 15, pp. 627- 637 ,(1966) , 10.1002/PSSB.19660150224
C. Alvarez, I. Šics, A. Nogales, Z. Denchev, S.S. Funari, T.A. Ezquerra, Structure-dynamics relationship in crystallizing poly(ethylene terephthalate) as revealed by time-resolved X-ray and dielectric methods Polymer. ,vol. 45, pp. 3953- 3959 ,(2004) , 10.1016/J.POLYMER.2003.09.069
A. Droździel, M. Turek, K. Pyszniak, S. Prucnal, R. Luchowski, W. Grudziński, A. Klimek-Turek, J. Partyka, Modification of Optical and Electrical Properties of PET Foils by He⁺, Ne⁺ and Ar⁺ Implantation Acta Physica Polonica A. ,vol. 132, pp. 264- 269 ,(2017) , 10.12693/APHYSPOLA.132.264
Norman Grassie, Gerald Scott, Polymer Degradation and Stabilisation ,(1985)
Callister, Material Science and Engineering ,(1997)
T. Datta, John A. Woollam, W. Notohamiprodjo, Optical-absorption edge and disorder effects in hydrogenated amorphous diamondlike carbon films Physical Review B. ,vol. 40, pp. 5956- 5960 ,(1989) , 10.1103/PHYSREVB.40.5956
M. Djebara, J.P. Stoquert, M. Abdesselam, D. Muller, A.C. Chami, FTIR analysis of polyethylene terephthalate irradiated by MeV He Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms. ,vol. 274, pp. 70- 77 ,(2012) , 10.1016/J.NIMB.2011.11.022