Optical and two-photon absorption analysis of radiation-grafted fluoropolymer

Grafting by gamma irradiation has a significant influence on the dispersion properties of polymeric materials. Accordingly, we study the effect of grafting on the material electronic structure parameters such as the fundamental absorption edge and bandgap structure. The optical absorption of grafted...

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Bibliographic Details
Published in:Journal of polymer science. Part B, Polymer physics Polymer physics, 2010-10, Vol.48 (19), p.2045-2051
Main Authors: El-Diasty, Fouad, Aly, E. Hassan, El-Sawy, N.M
Format: Article
Language:English
Subjects:
adsorption
Applied sciences
bandgap
Crosslinking
Dispersions
Electrical, magnetic and optical properties
Ethers
Exact sciences and technology
fluoropolymers
grafted polymer
Grafting
irradiation
Nanomaterials
Nanostructure
optical absorption
optical conductivity
optical nonlinearity
Organic polymers
Physicochemistry of polymers
Polymeric films
positron annihilation
Properties and characterization
Reproduction
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Summary:Grafting by gamma irradiation has a significant influence on the dispersion properties of polymeric materials. Accordingly, we study the effect of grafting on the material electronic structure parameters such as the fundamental absorption edge and bandgap structure. The optical absorption of grafted polymeric films of poly(tetrafluoroethylene-co-perfluorovinyl ether) (PFA-g-PAAc) is determined in a very wide spectral range of 0.2-3 μm. The nonlinear two-photon absorption coefficient is determined that showed an increase as a result to the grafting process. Moreover, a significant increase in the optical conductivity for the polymeric films is acquired after grafting. Positron annihilation spectroscopy is used to study polymer structure and volume size of nanoholes of Ps. The data revealed an increase of crosslinking with a smaller average volume size with grafting.
ISSN:0887-6266
1099-0488
1099-0488
DOI:10.1002/polb.22084