Structural investigation and enhancement of optical, electrical and thermal properties of poly (vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate)/graphene oxide nanocomposites

Yassin, A. Y.; Mohamed, Ahmed; Abdelrazek, E.M.; Morsi, M.A.; Abdelghany, A.M.

doi:10.1016/j.jmrt.2018.08.005

Cited by 39 publications

(18 citation statements)

References 34 publications

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“…The functionalized surface of Gr with oxides can significantly enhance the interfacial reaction with polymer matrices [ 228 ]. Yassin et al [ 229 ] synthesized Gr oxide developed by Hammer’s technique [ 230 ] from nanopowder of graphite oxide with an oxidation degree in the range of 5–10%. In implementing this methodology, various proportions: 0.2, 0.4, 0.8, 1.6, 3 and 4 wt% of Gr oxide (GO) have been effectively inserted into poly (vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate) (PVVH) copolymer.…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

“…This means that the distinguishing peak of GO in the composite XRD pattern decreases gradually in intensity with raising the amount and entirely disappears at high amounts. Moreover, it provides strong evidence that GO sheets have been effectively exfoliated into single sheets and well dispersed within PVVH at molecular levels [ 229 ].…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

“…These alkali salts reduced the band gap of host polymers like PVA and PEO very slightly which does not meet the expectation [ 73 , 313 ]. Yassin et al [ 229 ] used a modified Hammer’s method in the synthesis of graphene oxide from graphite oxide nanopowder with an oxidation degree within 5–10%. The incorporation of the various quantities of 0.2, 0.4, 0.8, 1.6, 3 and 4 wt% of graphene oxide (GO) into poly (Vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate) (PVVH) copolymer have been successfully carried out.…”

Section: Optical Parametersmentioning

confidence: 99%

“…However, the type of electronic transition has not been specified and they mentioned that for the direct band gap, the energy gap was reduced from 4 to 3.7 for the pure PVVH and 4 wt% of GO, respectively. Furthermore, for the indirect band gap, energy gap was reduced from 3.55 to 2.5 eV for the pure PVVH and 4 wt% of GO, respectively [ 229 ].…”

Section: Optical Parametersmentioning

confidence: 99%

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A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

et al. 2020

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Polymer electrolytes and composites have prevailed in the high performance and mobile marketplace during recent years. Polymer-based solid electrolytes possess the benefits of low flammability, excellent flexibility, good thermal stability, as well as higher safety. Several researchers have paid attention to the optical properties of polymer electrolytes and their composites. In the present review paper, first, the characteristics, fundamentals, advantages and principles of various types of polymer electrolytes were discussed. Afterward, the characteristics and performance of various polymer hosts on the basis of specific essential and newly published works were described. New developments in various approaches to investigate the optical properties of polymer electrolytes were emphasized. The last part of the review devoted to the optical band gap study using two methods: Tauc’s model and optical dielectric loss parameter. Based on recently published literature sufficient quantum mechanical backgrounds were provided to support the applicability of the optical dielectric loss parameter for the band gap study. In this review paper, it was demonstrated that both Tauc’s model and optical dielectric loss should be studied to specify the type of electron transition and estimate the optical band gap accurately. Other parameters such as absorption coefficient, refractive index and optical dielectric constant were also explored.

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Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

Section: Optical Parametersmentioning

confidence: 99%

Section: Optical Parametersmentioning

confidence: 99%

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A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

et al. 2020

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“…The method proposed by Broido [28] was used to obtain the activation energy (Ea) of the films during thermal degradation. The model used is an uncomplicated and relatively accurate method [28,29] for calculating Ea according to Equation (5):…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Braga

Poletto

2020

Materials

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Hemicellulose is one of the most common polysaccharides found in nature. Its use as a green and sustainable raw material for industries is desirable. In this work, an alkaline-alcoholic method was used to extract hemicelluloses from sugarcane bagasse. After extraction, films with 2%, 3% and 4% (w/v) hemicellulose were produced. The films’ morphology, thickness, water solubility, tensile properties and thermal stability were evaluated. The Fourier Transform Infrared Spectroscopy (FTIR) results reveal that the method used removes the hemicellulose from bagasse with a low concentration of lignin. The films presented a compact and dense structure with uniformity in thickness associated with higher solubility in water. The increase in hemicellulose content increased tensile strength, but reduced the tensile strain of the films. Thermogravimetric analysis indicated that the increase in hemicellulose content reduced the films’ thermal stability. Thus, these films may act as useful, biodegradable and environmentally friendly materials for engineering applications.

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Structure, properties, and antibacterial behavior of nickel oxide reinforced natural rubber nanocomposites for flexible electronic applications

Parvathi

Ramesan

2022

J of Applied Polymer Sci

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In this work, different contents of nickel oxide (NiO) nanoparticles were inserted into natural rubber (NR) using an industrial compounding technique to improve its process ability, mechanical, thermal stability, conductivity, dielectric constant, antibacterial and optical properties. The Fourier transform infrared spectra of composites showed the characteristic band of NiO at 495 cm À1 indicating the presence of nanoparticles in NR. The insertion of NiO into rubber showed a decrease in bandgap energy than pure NR. The crystalline peaks of nanoparticles in the rubber matrix were confirmed through X-ray diffraction pattern. The nano size distribution and surface morphology from HR-TEM and FE-SEM showed that the nanoparticles were uniformly dis-

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Structural investigation and enhancement of optical, electrical and thermal properties of poly (vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate)/graphene oxide nanocomposites

Cited by 39 publications

References 34 publications

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

Preparation and Characterization of Hemicellulose Films from Sugarcane Bagasse

Structure, properties, and antibacterial behavior of nickel oxide reinforced natural rubber nanocomposites for flexible electronic applications

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