Experimental investigations on nano-titania incorporated polyvinyl alcohol- polyvinyl pyrrolidone composite films

Lobo, Blaise; Veena, Lobo

doi:10.1080/25740881.2021.1930045

Cited by 2 publications

(2 citation statements)

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“…In the FTIR spectra of the MWCNT-doped polymer blend the salt complex exhibits the peaks related to pure PVA, pure PEG, NaNO 3 , and MWCNTs fillers and confirmed the formation of the composite. 46 − 49 The spectrum also confirmed the interaction between the polymer’s functional group and the fillers. The IR absorbance peak at 3381 cm –1 corresponds to the respective bands of O–H stretching and N–H bonding.…”

Section: Resultsmentioning

confidence: 63%

“…The analysis of FTIR spectra of pure PVA, pure PEG, and blended PVA-PEG are discussed in the previous work of Sadiq et al The spectra and data of polymer blend PVA-PEG + NaNO 3 + x wt % of MWCNTs and attached functional groups are shown in Figure ii(a–d) and Table , respectively. In the FTIR spectra of the MWCNT-doped polymer blend the salt complex exhibits the peaks related to pure PVA, pure PEG, NaNO 3 , and MWCNTs fillers and confirmed the formation of the composite. − The spectrum also confirmed the interaction between the polymer’s functional group and the fillers. The IR absorbance peak at 3381 cm –1 corresponds to the respective bands of O–H stretching and N–H bonding.…”

Section: Resultsmentioning

confidence: 69%

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Enhancement of Electrochemical Stability Window and Electrical Properties of CNT-Based PVA–PEG Polymer Blend Composites

et al. 2022

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New polymer blend composite electrolytes (PBCEs) were prepared by the solution casting technique using poly(vinyl alcohol) (PVA)-polyethylene glycol (PEG), sodium nitrate (NaNO3) as a doping salt and multiwalled carbon nanotubes (MWCNTs) as fillers. The X-ray diffraction pattern confirms the structural properties of the polymer blend composite films. FTIR investigations were carried out to understand the chemical properties and their band assignments. The ionic conductivity of the 10 wt % MWCNTs incorporated PVA-PEG polymer blend was measured as 4.32 × 10–6 S cm–1 at 20 °C and increased to 2.253 × 10–4 S/cm at 100 °C. The dependence of its conductivity on temperature suggests Arrhenius behavior. The equivalent circuit models that represent the R s(Q1(R1(Q2(R2(CR3))))) were used to interpret EIS data. The dielectric behavior of the samples was investigated by utilizing their AC conductance spectra, dielectric permittivity, dielectric constant (εi and εr), electric modulus (Mi and Mr), and loss tangent tan δ. The dielectric permittivity of the samples increases due to electrode polarization effects in low frequency region. The loss tangent’s maxima shift with increasing temperature; hence, the peak height rises in the high frequency region. MWCNTs-based polymer blend composite electrolytes show an enhanced electrochemical stability window (4.0 V), better transference number (0.968), and improved ionic conductivity for use in energy storage device applications.

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Section: Resultsmentioning

confidence: 63%