Effect of Low Pressure Nitrogen DC Plasma on Optical Properties of Biaxial-Oriented Polypropylene (BOPP), Poly Methyl Methacrylate (PMMA) and Poly Vinyl Chloride (PVC) Films

Mortazavi, S. Hamideh; Ghoranneviss, M.; Faryadras, Sanaz

doi:10.1007/s10894-011-9459-3

Cited by 20 publications

(7 citation statements)

References 15 publications

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“…(3) represents the variation of refractive index with wavelength for N 2 -plasma treated samples for different exposure times including the untreated one. The untreated sample showed nearly constant refractive index allover the range (400-900 nm), while as the treatment time increased the refractive index increases with decreasing the wavelength especially in the wavelength range (400-500) nm, which is in good agreement with the literature [36,40]. The change in the refractive index can be attributed to localized density increases arising from photo-induced cross-linking [41].…”

Section: Optical Analysissupporting

confidence: 89%

“…The peaks of absorption spectra that lie in the wavelength range 200-350 nm, showed an increasing intensity for a time duration of about 4 hrs after which the intensity starts to decrease. Mortazavi et al [36] attributed this decrease to the loss of carbonyl compound (C = O) which may be due to the oxidative decomposition of the double bonds' plasma or etching effect on the surface of the substrate. The increase followed by a decrease in the UV-Vis absorbance peak for PMMA films upon plasma treatment, is similar to previously reported works for samples treated with Gamma and carbon ion radiation [35,37].…”

Section: Resultsmentioning

confidence: 99%

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Optical and electrical properties of plasma surface treated polymethylmethacrylate films

El-Sayed

Farag

2019

Arab Journal of Nuclear Sciences and Applications

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In the present study, the optical and electrical properties of Polymethylmethacrylate (PMMA) films have been investigated under the effect of direct current (DC) glow discharge plasma. PMMA films have been prepared and treated with low-pressure DC glow discharge plasma at different plasma conditions; mainly various working gas and plasma treatment times. The optical and electrical properties of the treated PMMA samples were measured and compared to the untreated one. Nitrogen, argon, and nitrogen-argon mixture have been used as working gases. Plasma parameters, such as the electron density, the ion density, and electron temperature, were measured, at the position of the PMMA films, using Langmuir probe. The results reveal that, the optical properties of PMMA were found to be more sensitive to N 2-plasma treatment than Ar and N 2-Ar gas mixture. The optical energy gap showed a decreasing behavior with increasing the treatment time of N 2 plasma, however, the band tail width and the electrical resistivity increased

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Section: Optical Analysissupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Optical and electrical properties of plasma surface treated polymethylmethacrylate films

El-Sayed

Farag

2019

Arab Journal of Nuclear Sciences and Applications

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“…This band is enhanced in the spectra of the PVC/CdO nanocomposite films. The significant increase in the absorbance below 256 nm is associated with the CCl bond . Also, a small hump around 485 nm is observed specially for 1.4 wt% CdO‐doped PVC film.…”

Section: Resultsmentioning

confidence: 91%

Synthesis, characterization, optical, and dielectric properties of polyvinyl chloride/cadmium oxide nanocomposite films

et al. 2014

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Nano‐sized cadmium oxide (CdO) was synthesized using a sol–gel method and mixed with poly(vinyl chloride) (PVC). X‐ray diffraction and high‐resolution transmission electron microscopy measurements indicated that the average particle size of the CdO is about 70.18 nm. Scanning electron microscopy images revealed a good dispersion of CdO nanoparticles on the surface of the PVC films. The optical energy band gap (Eg) showed a decrease from 5.08 to 4.88 eV with increasing the CdO content. The refractive index dispersion of the nanocomposite films was found to obey the single oscillator model. The dispersion parameters were changed by CdO incorporation. According to the frequency and temperature dependence of the dielectric constant (ε′), the observed αa‐relaxation peaks were assigned to the micro‐Brownian motion of the polymer main chains. The influence of CdO nanoparticles content on the ac conductivity and the activation energy of PVC nanocomposite films were discussed. It was found that both dielectric and optical properties were reinforced by the adding of CdO nanoparticles to the PVC matrix. Finally, the results of the present system are compared with those of similar materials. POLYM. COMPOS., 35:1842–1851, 2014. © 2014 Society of Plastics Engineers

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“…This band is enhanced in the spectra of the PVC/PbO nanocomposites. Also, the significant increase of absorbance in wavelengths below 257 nm is associated with CCl bond . The inset of Figure a shows the variation of absorption coefficient, α = absorbance ( A )/film thickness ( d ), with the wavelength in the wavelength range 237–252 nm.…”

Section: Resultsmentioning

confidence: 97%

Dielectric relaxation and optical properties of polyvinyl chloride/lead monoxide nanocomposites

Sayed

Morsi

2013

Polym. Compos.

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Sol–gel synthesized lead monoxide (PbO) nanoparticles were mixed with polyvinyl chloride (PVC). The dielectric characteristics of PVC/PbO nancomposite films were studied in the temperature range 303–408 K and frequency range 30 kHz–3 MHz. There is a sharp increase in the dielectric constant (ε′), after the glass transition temperature. According to the temperature and frequency dependence of the dielectric loss modulus (M″), the observed αa‐relaxation peak is due to the micro‐Brownian motion of the polymer main chains. The behavior of σac (f) for the composite films indicate that the homogenous distribution of PbO nanoparticles allows the formation of conductive three‐dimensional networks throughout the nanocomposite films which assisting the charge carriers to hop from conducting clusters to neighbors. The influences of PbO content on the direct optical band gap and the refractive index of the films are also discussed and compared with those of previous studies of PVC composites. POLYM. COMPOS., 34:2031–2039, 2013. © 2013 Society of Plastics Engineers

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Effect of Low Pressure Nitrogen DC Plasma on Optical Properties of Biaxial-Oriented Polypropylene (BOPP), Poly Methyl Methacrylate (PMMA) and Poly Vinyl Chloride (PVC) Films

Cited by 20 publications

References 15 publications

Optical and electrical properties of plasma surface treated polymethylmethacrylate films

Optical and electrical properties of plasma surface treated polymethylmethacrylate films

Synthesis, characterization, optical, and dielectric properties of polyvinyl chloride/cadmium oxide nanocomposite films

Dielectric relaxation and optical properties of polyvinyl chloride/lead monoxide nanocomposites

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