Journal article
Optical properties of poly (ethyl methacrylate) - cellulose acetate propionate blend film irradiated with Nd:YAG laser

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Publication Details
Author list: K. H. Mahmoud, Khaled A. Elsayed and T. S. Kayed
Publisher: Springer Verlag (Germany)
Publication year: 2020
Volume number: 27
Issue number: 4
Start page: 1
End page: 7
Number of pages: 7
ISSN: 1022-9760
Web of Science ID: 000521957800001
PubMed ID:
Scopus ID: 85082390312
eISSN: 1572-8935

Poly (ethyl methacrylate) (PEMA) - cellulose acetate propionate (CAP) blend film was prepared using the cast technique. A Qswitched Nd: YAG laser beam with a wavelength of 266 nm, a pulse duration of 10-ns, a repetition rate10 Hz and 0.018 J/cm2 fluence was used to irradiate the prepared film. The optical absorption of pristine and irradiated sample was studied within 200–500 nm wavelength region. The absorbance increases with laser irradiation time over the full wavelength region which is attributed to an increase of the crosslinking network. Examining Tauc plots revealed a transition of the direct allowed type with optical energy gap value of 4.92 eV for the pristine blend film which has decreased to 4.30 eVafter laser irradiation for 90 min. The refractive index, finesse coefficient, dielectric function, Brewster, and critical angles demonstrated dispersion in the 200–500 nm wavelength range.

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Last updated on 2020-19-04 at 14:19