Tailoring the structural, electrical and thermal properties of zinc oxide reinforced chlorinated natural rubber/poly (indole) blend nanocomposites for flexible electrochemical devices

Parvathi, K.; Ramesan, M. T.

doi:10.1007/s10965-022-03427-2

Cited by 25 publications

(20 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An agglomerated globular structure with nanometer dimension of the PIN grawn on the bare PVA film is clearly seen. The irregular arrangements of the particle show the amorphous nature of the polymer [35] . From the figure, it can be observed that the hybrid film has sufficient porosity on the surface that encourages the intercalation of the ions along with the solvent molecule into the polymer matrix thus enhancing the electrochemical reaction during cycling.…”

Section: Resultsmentioning

confidence: 99%

“…The irregular arrangements of the particle show the amorphous nature of the polymer. [35] From the figure, it can be observed that the hybrid film has sufficient porosity on the surface that encourages the intercalation of the ions along with the solvent molecule into the polymer matrix thus enhancing the electrochemical reaction during cycling. Figure 2c and 2d show the elemental analysis data from the EDX analysis.…”

Section: Ftir Spectramentioning

confidence: 99%

See 1 more Smart Citation

Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions

Rajan,

Shabeeba,

Sidheekha

et al. 2023

Chemistry An Asian Journal

View full text Add to dashboard Cite

The influence of surrounding temperature and electrical energetic condition on the conformational movements (cooperative actuation) of polyindole is verified using a polyindole‐coated polyvinyl alcohol (PIN/PVA) film. Chronopotentiometric studies reveals that the consumed electrical energy during the reaction varies linearly with the change in working temperature. The influence of temperature on the reversible conformational movements of the polymer chain is related to the charge consumed during the reaction. The logarithmic dependence of reversible redox charge obtained from coulovoltammogram with inverse of temperature further proved the temperature sensing characteristics and the influence of temperature on the cooperative actuation of the PIN/PVA film. The conformational relaxation increases as the temperature increases through hosting higher number of counter anions with the solvent molecule. The extension of the redox reaction or charge consumption was found to decrease as the scan rate increases. The double logarithmic relation between the consumed redox charge and the scan rate has proved that the electrical energetic condition can influence the conformational movement or the extension of the redox reaction in a reversible manner. The results suggest that the PIN/PVA film can act as a biomimetic macro molecular sensor of working temperature and electrical energetic condition as biological muscles do.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Ftir Spectramentioning

confidence: 99%

Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions

Rajan,

Shabeeba,

Sidheekha

et al. 2023

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“…The lower frequency zone has low conductivity due to insulating grain boundaries, while the higher frequency region has high conductivity due to conducting grains. [ 36 ] The randomly oriented macromolecular chains in the PVAc matrix, which lead to poor linking, are responsible for the lower electrical conductivity of the polymer. It is clear from the figure that the AC conductivity increases with an increase in bio‐filler loading and reaches a maximum at 15 wt% loading of AR.…”

Section: Resultsmentioning

confidence: 99%

In situ emulsion polymerization of poly (vinyl acetate) and asparagus racemosus biopolymer composites for flexible energy storage applications

et al. 2023

Self Cite

View full text Add to dashboard Cite

Polymer composites reinforced with synthetic materials are losing acceptability due to significant environmental concerns and high costs. Natural fillers are becoming increasingly popular due to their non‐toxicity, lightweight, low energy consumption, and environmental friendliness. In the present work, poly (vinyl acetate) (PVAc) and asparagus racemosus (AR) bio‐composites have been prepared by an in‐situ emulsion polymerization method. The composite films were subsequently examined by Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction, atomic force microscopy (AFM), field emission scanning electron microscopy (FE‐SEM), optical microscope, differential scanning calorimeter (DSC), and thermogravimetric analysis. The formation of AR in PVAc composite was confirmed by the characteristic AR band at 3300 cm−1 in FT‐IR spectra. X‐ray diffraction studies showed a shift in the amorphous peak of PVAc/AR composites compared to pure PVAc. The AFM, FE‐SEM, and optical microscopic results revealed the uniform distribution of AR in the polymer matrix. DSC and TGA measurements showed that the glass transition temperature and thermal stability of PVAc increased with the inclusion of bio‐filler. The tensile strength, hardness, dielectric constant and AC conductivity of PVAc were observed to increases with boehmite inclusion, whereas elongation at break is reduced. As a result, environmentally friendly PVAc/AR composites with good mechanical, thermal and electrical properties could be a viable green substitute for energy storage, flexible electronic, and other electrochemical devices.

show abstract

“…According to the CBH model, the maximum barrier height for hopping (Um) or the energy required for charge carrier hopping can be calculated by using the frequency exponent from the following equation and the obtained values of Um in eV are summarized in Table 2.where, K and T are Boltzmann constant and absolute temperature respectively. 41 The decrease in mileage of hopping indicates the enhanced electrical conductivity of the system, wherein, the energy required for hopping is reduced.…”

Section: Resultsmentioning

confidence: 99%

“…where, K and T are Boltzmann constant and absolute temperature respectively. 41 The decrease in mileage of hopping indicates the enhanced electrical conductivity of the system, wherein, the energy required for hopping is reduced. Since the experimental results showed that electrical conductivity increased linearly with the reciprocal of temperature, the activation energy was calculated from the slope of the straight line, depending on the Arrhenius relationship: where σ 0 is the pre-exponential factor, K is the Boltzmann constant and T is the absolute temperature.…”

Section: Ac Conductivitymentioning

confidence: 99%

Effect of boehmite nanoparticles on structural, optical, thermal, mechanical and electrical properties of poly (methyl methacrylate) nanocomposites for flexible optoelectronic devices

Vyshakh

Arun

Sathian

et al. 2023

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

The structural, optical, morphological and thermal properties of poly (methyl methacrylate) (PMMA)/boehmite nanocomposite films were studied by Fourier transform infrared spectroscopy (FT-IR), UV-Vis spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) studies. The FT-IR spectra of composites showed the characteristic band of boehmite nanoparticles at 518 cm−1 indicating an effective interaction between PMMA and boehmite. The UV-visible measurements showed that the optical energy gaps for the direct permitted transitions decreased as boehmite content increased. The orientation of nanoparticles observed from XRD revealed that the addition of boehmite increases the crystallinity of PMMA. The SEM analysis showed the uniform distribution of boehmite in the PMMA matrix. The shift in glass transition and melting temperatures to higher temperature domains were revealed by DSC analysis. From the TGA studies, the reinforcement of PMMA with boehmite nanoparticles increases thermal stability. The electrical conductivity was measured using the impedance technique, and it was studied as a function of nanoparticles loading, applied frequency ranging from 100 to 106 Hz and at different temperatures. The AC conductivity of the composite increases with frequency and temperature. The activation energy was also measured for all samples at various applied frequencies, and it was observed that it decreased with increasing nanoparticle loading. The dielectric constant of PMMA increases with nanoparticle concentration up to 7 wt%. The modulus, tensile strength, hardness, and impact properties of the PMMA/boehmite nanocomposite films were significantly enhanced by the reinforcement of nanoparticles into the polymer matrix. The excellent optical properties, mechanical strength and electrical properties obtained for 7 wt% loaded nanocomposite films enable them to be used in the construction of electromagnetic induction shielding materials, conducting adhesives, and flame-resistant flexible optoelectronic devices.

show abstract

Tailoring the structural, electrical and thermal properties of zinc oxide reinforced chlorinated natural rubber/poly (indole) blend nanocomposites for flexible electrochemical devices

Cited by 25 publications

References 44 publications

Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions

Reaction Induced Conformational Change in Polyindole: Polyindole/PVA Film as Biomimetic Sensors of Temperature and Electrical Energetic Conditions

In situ emulsion polymerization of poly (vinyl acetate) and asparagus racemosus biopolymer composites for flexible energy storage applications

Effect of boehmite nanoparticles on structural, optical, thermal, mechanical and electrical properties of poly (methyl methacrylate) nanocomposites for flexible optoelectronic devices

Contact Info

Product

Resources

About