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Effectively polymer composition controllable optical properties of PVDF/PMMA blend films for advances in flexible device technologies

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Title Effectively polymer composition controllable optical properties of PVDF/PMMA blend films for advances in flexible device technologies
 
Creator Kumar, Naresh
Sengwa, R J
Dhatarwal, Priyanka
Saraswat, Mukul
 
Subject Polymers
PVDF/PMMA blend
UV-Vis spectroscopy
Energy band gap
Optical properties
 
Description 169-180
Polymer blends and their matrices-based nanocomposites have been established as potential candidates in the
advancement of optoelectronic and microelectronic device technologies because they bear attractive design flexibility and
also tunable optical and dielectric properties. In this research, we prepared the poly(vinylidene fluoride)/poly(methyl
methacrylate) (PVDF/PMMA) blend films with varying constituents concentration (viz. PVDF/PMMA=100/0, 80/20, 60/40,
40/60, 20/80, 0/100 wt/wt%), and these were investigated by employing ultraviolet-visible (UV-Vis) spectrophotometer for
their in-detail optical characterization. The absorbance, reflectance, and transmittance spectra of these PVDF/PMMA blend
films in the wavelength range from 200 nm to 800 nm were analyzed and considered to determine the values of various
optical parameters. Due to significant differences in optical behaviour of the PVDF film and that of the PMMA film, the
values of the direct energy band gap, extinction coefficient, refractive index, single oscillator energy, dispersive energy,
optical range complex dielectric permittivity, optical conductivity, linear susceptibility, third-order non-linear susceptibility,
and non-linear refractive index of the PVDF/PMMA blend films were found appreciably blend composition controllable.
The energy bandgap, refractive index, and extinction coefficient of these materials are found in the ranges 5.42 to 4.93 eV,
2.22 to 1.72, and 6.62  104 to 0.64  104, respectively. The experimental results offer a new paradigm for the use of these
materials in the design and development of next-generation flexible optoelectronic and allied devices.
 
Date 2022-05-19T07:03:40Z
2022-05-19T07:03:40Z
2022-04
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscair.res.in/handle/123456789/59749
 
Language en
 
Publisher CSIR-NIScPR, India
 
Source IJEMS Vol.29(2) [April 2022]