Optimized AC conductivity correlated to structure, morphology and thermal properties of PVDF/PVA/Nafion composites

Pandey, Mayank; Joshi, Girish M.; Deshmukh, Kalim; Khutia, Moumita; Ghosh, Narendra Nath

doi:10.1007/s11581-014-1111-6

Cited by 33 publications

(15 citation statements)

References 22 publications

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“…PVA filled with zinc sulphide nanoparticles nanocomposite films [ 26 ] and PVA with cadmium sulphide nanocomposites [ 27 ] have also been reported with enhanced dielectric properties. Furthermore, PVA, polyvinylidene fluoride (PVDF) and nafion composites have been prepared by solution casting for application in sensors, fuel cells and batteries [ 28 ]. For the purposes of adsorption and separation, PVA has been used in protein adsorption [ 29 , 30 ], immobilization of lipase [ 31 ], nanocomposite device for bioseparation [ 32 ], selective adsorption and separation of dyes [ 33 ] and gas separation [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Nanocomposite Film Comprising of Polyvinyl Alcohol (PVA) Incorporated with Bacterial Cellulose Nanocrystals and Magnetite Nanoparticles

et al. 2021

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Nanocomposite film of poly(vinyl alcohol) (PVA) incorporated with bacterial cellulose nanocrystals (BCNCs) and magnetite nanoparticles (Fe3O4) is reported in this study. The BCNC-Fe3O4 nanoparticles and PVA film was prepared by in situ synthesis technique using chemical co-precipitation. Different concentrations of BCNC-Fe3O4 (20%, 40% and 60% w/w) were mechanically dispersed in PVA solution to form the nanocomposite film. Transmission electron microscopy (TEM) analysis of BCNC-Fe3O4 nanoparticles showed irregular particle sizes ranging from 4.93 to 30.44 nm with an average size distribution of 22.94 nm. The presence of characteristic functional groups of PVA, BCNC and Fe3O4 were confirmed by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analysis. Scanning electron microscope (SEM) attached energy dispersive spectroscopy (EDS) and vibrating sample magnetometer (VSM) analysis revealed that, the iron content and magnetic property increased with increasing BCNC-Fe3O4 content. The saturation magnetizations (MS) value increased from 5.14 to 11.56 emu/g. The PVA/ BCNC-Fe3O4 at 60% showed the highest Young’s modulus value of 2.35 ± 0.16 GPa. The prepared film could be a promising polymeric nanomaterial for various magnetic-based applications and for the design of smart electronic devices.

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Section: Introductionmentioning

confidence: 99%

Development of Nanocomposite Film Comprising of Polyvinyl Alcohol (PVA) Incorporated with Bacterial Cellulose Nanocrystals and Magnetite Nanoparticles

et al. 2021

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“…Pure PVA film represents the peaks at 19.5 and 8.8 both corresponds to 101 planes, which describes the semicrystalline nature of the polymer. 20,25 The semicrystalline nature of the polymer describes its strong intermolecular interaction within the polymeric chain. Figure 3(a) represents the structural characterization of WPPy:PVA::50:50 blends.…”

Section: Xrd Analysismentioning

confidence: 99%

“…It is known for its excellent emulsifying, film forming, and adhesive properties, so it is widely used as crosslinker. 20 PVA is a semicrystalline, synthetic polymer with excellent dielectric property. It is also known for its good mechanical, thermal, and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of flexible ternary polymer blends comprising polypyrrole, polyvinylalcohol, and poly(4‐styrenesulfonic acid): Study of structural, morphological, and dielectric properties

Pandey¹,

Deshmukh

2022

J of Applied Polymer Sci

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A new ternary polymer blend was synthesized and characterized in the present work. A series of ternary polymer blends comprising water soluble polypyrrole, polyvinyl alcohol, and poly(4‐styrenesulfonic acid) were prepared by solution casting method. The structural, electrical, and thermal properties of prepared ternary blends were investigated. X‐ray diffraction studies indicated the semicrystalline nature of the polymer blends and chemically interacted polymer chain were revealed by Fourier transform infrared spectra. The morphological phase transformations were observed from scanning electron microscope and atomic force microscopy images. Thermogravimetric analysis explained the thermal degradation process. The ternary blends also possess excellent mechanical stability observed through force versus extension plot. The dielectric constant value of ternary blends was obtained in the range of 600–800 at low frequency range. The highest conductivity obtained was between 10−1 to 10−3 S cm−1 for ternary blends at higher frequency range. The overall results explains the charge transportation and relaxation process in the ternary blends due to presence of an electric field. The excellent dielectric constant values of ternary blends will be efficient for various electronics applications.

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“…The PNCs reinforced with inorganic nanoparticles (NPs) have potential applications such as optical power limiters, membranes for gas separation, flexible light emitters etc [4,5]. Polymer/filler interface, the geometry of the dispersed phase (orientation, size, shape etc), their relative contents, and also volume fraction can alter or modify the final properties of PNCs [6]. The unavailability of low-cost techniques to control the distribution of NPs into the host polymer matrix is the main obstruction to the large-scale fabrication of PNCs [7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced dielectric properties of green synthesized Nickel Sulphide (NiS) nanoparticles integrated polyvinylalcohol nanocomposites*

Reddy

Deshmukh

Kovařík

et al. 2020

Mater. Res. Express

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A green synthesis approach has been adopted to prepare nickel sulphide nanoparticles (NiS NPs) using banana peel extract (BPE) as a reducing and capping agent. Polyvinyl alcohol (PVA)/NiS nanocomposite films were fabricated using a cost-effective solution casting technique by dispersing different contents of NiS NPs (0-3 wt%) in the PVA matrix. Various characterization techniques were employed to analyze the structural, thermal and morphological properties of the PVA/NiS nanocomposite films. Further, the dielectric behaviour of these nanocomposite films was investigated at frequency range 50 Hz-20 MHz and in the temperature range 40°C-140°C. Also, there exists a significant interaction between the polymer matrix and the nanofiller as evident from the notable improvement in the dielectric properties of the nanocomposites. The dielectric constant (ε) value of PVA/NiS nanocomposite film with 3 wt % NiS NPs loading was found to be 154.55 at 50 Hz and at 140°C which is 22 times greater than the dielectric constant value of neat PVA (6.90). These results suggest that NiS NPs were dispersed homogeneously in the PVA matrix.Among various polymers used for the fabrication of PNCs, polyvinyl alcohol (PVA) is most often preferred as a host matrix owing to its excellent film-forming ability, higher dielectric strength, the capability to form strong hydrogen bonding, easy processability, excellent chemical stability, and highly durable nature [17]. PVA has been employed for various applications such as in battery components, packaging, textile applications in the microelectronic industry, electromagnetic interference applications and so on [17,18]. Several research groups reported the dielectric properties of the PVA based nanocomposites [19][20][21]. With this inspiration, in the present study PVA has been chosen as a host polymer to synthesize PVA based nanocomposites. Now a day, more attention has been focussed on metal sulphide nanostructures because of their unique properties and applications [22]. Among these, nickel sulphide (NiS) has been mostly investigated because of its simple production, affordable price and high electronic conductivity [23,24]. It exhibits complicated electrical, optical, structural, compositional and magnetic phase behaviour [25]. Also due to the possession of multi-phases, binary Ni-S systems such as NiS 2 , Ni 3 S 4 , Ni 9 S 8 , Ni 7 S 6 , Ni 6 S 5 , Ni 4 S 3+x , Ni 3 S 2 , and Ni 3+x S 2 have become fascinated materials [26]. NiS NPs exhibit different shapes such as layer-rolled structures, urchin-like nanocrystallites, flower-like architectures, hollow spheres, nanoframes, nanorods, and nanospheres etc [27,28].Recently, increased attention has been given to the green approach for the synthesis of NPs because of its several advantages [29][30][31][32]. For the synthesis of NPs, the plant extracts which serve as reducing/capping agents are considered to be more beneficial than remaining techniques [33]. Several researchers reported the synthesis of metal sulphide NPs through a green synthesis a...

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Optimized AC conductivity correlated to structure, morphology and thermal properties of PVDF/PVA/Nafion composites

Cited by 33 publications

References 22 publications

Development of Nanocomposite Film Comprising of Polyvinyl Alcohol (PVA) Incorporated with Bacterial Cellulose Nanocrystals and Magnetite Nanoparticles

Development of Nanocomposite Film Comprising of Polyvinyl Alcohol (PVA) Incorporated with Bacterial Cellulose Nanocrystals and Magnetite Nanoparticles

Fabrication of flexible ternary polymer blends comprising polypyrrole, polyvinylalcohol, and poly(4‐styrenesulfonic acid): Study of structural, morphological, and dielectric properties

Enhanced dielectric properties of green synthesized Nickel Sulphide (NiS) nanoparticles integrated polyvinylalcohol nanocomposites*

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