Mechanical and electrical studies of PVA/PVP blend filled with MWCNTs

Abdelrazek, E.M.; Abdelghany, A.M.; Tarabiah, A. E.; Waly, A.L.

doi:10.1007/s00289-022-04391-z

Cited by 13 publications

(9 citation statements)

References 25 publications

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“…It is possible that electrode effects, as well as interface effects, which dominate in large parts of the sample, are responsible for the high ε ′ and ε ″ values at low frequencies. Furthermore, it is believed that the initial values of ε ′ and ε ″ for polar materials are high, but as the field frequency increases, their values decrease as the dipoles cannot keep up with field fluctuations 59,60 …”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, it is believed that the initial values of ε 0 and ε 00 for polar materials are high, but as the field frequency increases, their values decrease as the dipoles cannot keep up with field fluctuations. 59,60 Following the filing of TiO 2 NPs, ε 0 and ε 00 values increased in all frequency ranges due to the addition of polar groups. In fact, the TiO 2 NPs can be regarded as nanocapacitors within the insulating matrix.…”

Section: Dielectric Constant and Lossmentioning

confidence: 99%

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IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Al‐Muntaser,

Abo‐Dief,

Tarabiah

et al. 2023

Polymer Engineering & Sci

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In the present work, sol–gel‐synthesized titanium oxide nanoparticles (TiO2 NPs) were added to polyvinyl chloride (PVC) and polymethyl methacrylate (PMMA) to create polymer nanocomposites (PNCs) samples. The preparation was carried out via the solution casting method. The synthesized TiO2 NPs have a tetragonal anatase phase and an average grain size of 15.7 nm. XRD analysis reveals that the TiO2 NPs' addition to PVC/PMMA causes a decrease in the crystallinity of PNCs films. Infrared Fourier analysis demonstrated the interplay/complexity between the PVC/PMMA blend and TiO2 NPs. The UV/visible spectrum of the PVC/PMMA blend showed two absorbance peaks at 278 and 208 nm, which may result from the n → π* and π → π* transitions. Also, optical bandgaps for indirect and direct allowed transitions decreased with increasing TiO2 NPs concentration. The samples' AC electrical conductivity and dielectric properties were measured at room temperature. As the TiO2 NPs content in the nanocomposite rises, a percolating network begins to emerge inside the composite, demonstrating that AC electrical conductivity obeys Jonscher's law. Additionally, it has been demonstrated that nanoparticle concentration leads to a higher composite dielectric loss and dielectric constant. These findings suggest the possibility of using the prepared nanocomposites in capacitive energy storage and optoelectronic devices.Highlights PVC/PMMA‐TiO2 nanocomposites' films were fabricated via the solution casting method. Adding TiO2 NPs to PVC/PMMA reduces the crystallinity of the PNCs films. The allowed direct and indirect bandgaps decreased with rising TiO2 NPs content. AC conductivity, impedance, and dielectric characteristics were discussed. The findings indicate the use of prepared samples in optoelectronic devices.

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Section: Resultsmentioning

confidence: 99%

Section: Dielectric Constant and Lossmentioning

confidence: 99%

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Al‐Muntaser,

Abo‐Dief,

Tarabiah

et al. 2023

Polymer Engineering & Sci

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“…The statistical measurements for PVA blends with conventional polymers of chitosan and cellulose are provided in Table 2 which show a distinct improvement of the present study in terms of modulus and tensile strength. [ 37,38 ] Nevertheless nanocomposites of PVA reveal a higher modulus and tensile strength although the elongation and break are by far smaller than the present work [ 39 ] We can predict higher modulus and tensile strength on increasing the amount of CNT dopant but the flexibility of the film will be sacrificed. The combination presented in this work seems to give a fine balance of module and elongation for the flexible film compared to previous works.…”

Section: Resultsmentioning

confidence: 54%

Synthesis, Characterization, and Properties of Sulfonated CNT‐Doped Poly(aniline‐co‐carbazole)‐PVA Conductive Films

Lakouraj

Norouzian

Tavakoli

2023

Macro Materials & Eng

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Conductive flexible films are successfully synthesized from polyvinyl alcohol matrix and poly(aniline‐co‐carbazole) charge carrier. To improve the mechanical properties of polyvinyl alcohol and promote charge transition in the conductive copolymer, dual purpose sulfonated multiwall carbon nanotube is added. Conductivity is enhanced via sulfonic acid protonic dopant and mechanical property is increased by its hexagonal nanorods. Nanocomposites are prepared by adding 0.025, 0.050, and 0.075 g of carbon nanotube which is added at 1%, 3%, and 5% loads to the polymer matrix. Films are characterized by infrared, UV–vis, X‐ray diffraction, scanning electron microscopy, and thermogravimetric analysis. Conductivity is measured by the four‐probe technique and mechanical property is assessed through tensile tests and dynamic mechanic thermal analysis. A 5 × 10−6 S cm−1 conductivity and 116 MPa tensile strength are recorded for the conductive film with optimum dopant/nanocomposite loads. The electrochemical property and corrosion resistance are studied by cyclic voltammetry and Tafel curves, respectively. The conductive films show an increase in corrosion potential and a decrease in corrosion current referring to a reliable corrosion protection film. The water uptake and contact angle of the films are measured to be 157% and 80.1° respectively to confirm its required hydrophilic property.

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“…18,20 Accordingly, the combination of two polymers (PVA/PVP), in one blend perceived special interest in recent years because it yields polymeric membranes with synergetic properties. 21,22 Also, it has been recognized that the final blend member has a grand compatibility that comes from the interaction of the hydrogen bond 23,24 making it a very adequate host for different fillers. 17 More than that, the interaction between the hydroxyl group ( OH) of PVA with the carbonyl group (C O) of PVP provides the final blend with high stability.…”

mentioning

confidence: 99%

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

Al‐Sulami,

Al‐Nashri,

Al‐Mhyawi

et al. 2024

Polymers for Advanced Techs

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This work is devoted to optimizing the optical and dielectric parameters of polyvinyl alcohol (PVA): polyvinyl pyrrolidone (PVP) (1:1) polymer nanocomposites by controlling barium stannate contents (BaSnO3) aspiring to engage it into flexible optoelectronics and thermally stable capacitors. Herein, high purity BaSnO3 was synthesized by solid‐state route and loaded with different ratios (5–20 wt%) into PVA/PVP blend to form films by solution casting method. Further, the degree of crystallinity (Xc) was highly increased upon increasing the filler contents (BaSnO3), as confirmed by X‐ray diffractometer measurement. The surface morphology pictured by a field emission scanning electron microscope revealed the variation of the surface from smooth to rough surface upon insertion of BaSnO3. The thermodynamic parameters including enthalpy (ΔH), entropy (ΔS), and Gibb's free energy (ΔG) were extracted from TGA measurements and studied in detail. The optical characteristics of plain PVA/PVP and polymer nanocomposite films are explored by UV–Vis–NIR spectrophotometer. The presence of charge‐transfer complexes within the polymer nanocomposites was certified via shifting of band gap energy from 5.02 to 4.33 eV and variation of band tailing energy (Eu) from 0.22 to 0.44 eV. The real and imaginary part of optical conductivity (σp1, σp2) was confirmed to be enhanced with the insertion of BaSnO3. It is also found that the dielectric constant and DC current increased with the insertion of BaSnO3 content, while the dielectric loss decreases. The findings recommend these polymer nanocomposites as a good candidate for green energy applications and high‐performance capacitors.

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Mechanical and electrical studies of PVA/PVP blend filled with MWCNTs

Cited by 13 publications

References 25 publications

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Synthesis, Characterization, and Properties of Sulfonated CNT‐Doped Poly(aniline‐co‐carbazole)‐PVA Conductive Films

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications

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Mechanical and electrical studies of PVA/PVP blend filled with MWCNTs

Cited by 13 publications

References 25 publications

IncorporatedTiO2nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

IncorporatedTiO2nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Synthesis, Characterization, and Properties of Sulfonated CNT‐Doped Poly(aniline‐co‐carbazole)‐PVA Conductive Films

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO3 polymer nanocomposites as promising films for optoelectronics and energy storage applications

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IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

IncorporatedTiO₂nanoparticles intoPVC/PMMApolymer blend for enhancing the optical and electrical/dielectric properties: Hybrid nanocomposite films for flexible optoelectronic devices

Engineering the optical, and dielectric properties of (PVA: PVP)/BaSnO₃ polymer nanocomposites as promising films for optoelectronics and energy storage applications