Effect of poling time and grid voltage on phase transition and piezoelectricity of poly(vinyledene fluoride) thin films using corona poling

Mahadeva, Suresha K.; Berring, John; Walus, Konrad; Stoeber, Boris

doi:10.1088/0022-3727/46/28/285305

Cited by 103 publications

(82 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The peak obtained at around 2 θ = 18.7°, 20.0°, and 26.4° reflect α‐crystal structure which can be indexed α (020), α (110), and α (021) for pure PVDF. The peaks at 2 θ = 34.8° and 36.2° relate to the (200) plane of α‐phase of PVDF and the peak at 2 θ = 39.2° refers to the combined (201) and (111) reflections of the β‐phase due to molecular defects caused by head–head and tail–tail sequences . After grafting of PVTri on PVDF powder, the characteristic peaks at around 2 θ = 18.7° and 26.4° of α‐phase of PVDF disappeared completely for PVDF‐ g ‐PVTri (C1, C2, and C3) graft copolymers, respectively.…”

Section: Resultsmentioning

confidence: 99%

Investigation of proton conductivity of anhydrous proton exchange membranes prepared via grafting vinyltriazole onto alkaline-treated PVDF

Sinirlioglu

Müftüoğlu

Gölcük

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

This work uses a simple “grafting through” approach in the preparation of anhydrous poly(vinylidene fluoride) (PVDF)‐g‐PVTri polymer electrolyte membranes (PEMs). Alkaline‐treated PVDF was used as a macromolecule in conjunction with vinyltriazole in the graft copolymerization. The obtained polymer was subsequently doped with triflic acid (TA) at different stoichiometric ratios with respect to triazole units and the anhydrous PEMs (PVDF‐g‐PVTri‐(TA)x) were prepared. All samples were characterized by FTIR and 1H NMR. The composition of PVDF‐g‐PVTri was determined by energy dispersive spectroscopy. Thermal properties of the membranes were examined by thermogravimetric analysis and differential scanning calorimetry. The surface roughness and morphology of the membranes were studied using atomic force microscopy, X‐ray diffraction, and scanning electron microscopy. PVDF‐g‐PVTri‐(TA)3 (C3‐TA3) with a degree of grafting of 47.22% showed a maximum proton conductivity of 0.09 S cm−1 at 150 °C and anhydrous conditions. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1885–1897

show abstract

Section: Resultsmentioning

confidence: 99%

Investigation of proton conductivity of anhydrous proton exchange membranes prepared via grafting vinyltriazole onto alkaline-treated PVDF

Sinirlioglu

Müftüoğlu

Gölcük

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…Finally, the resulting paper is subjected to corona poling at 120°C for 4 hours with a needle voltage of 17 kV and a grid voltage of 5 kV to render it piezoelectric. A detailed description of the corona poling setup and procedure can be found elsewhere in the literature [13]. …”

Section: Piezoelectric Paper Fabricationmentioning

confidence: 99%

Piezoelectric paper for physical sensing applications

Mahadeva

Walus

Stoeber

2015

2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

Self Cite

View full text Add to dashboard Cite

We have developed robust and mechanically flexible piezoelectric paper. The fabrication process involves functionalization of barium titanate (BaTiO 3 ) nanostructures onto wood fibers, followed by activation in a suspension of the commercially available paperstrength-enhancing additive, carboxymethyl cellulose (CMC), which improves fiber-fiber bonding. This leads to piezoelectric paper with both high tensile strength and flexibility. We have investigated the effect of CMC concentration (2-6 wt%) on the tensile properties of the paper and found the highest tensile strength at 6wt% CMC. This piezoelectric paper has the largest piezoelectric coefficient reported for paper to date (d 33 = 37 -45.7 ± 4.2 pC/N) and is comparable to that of commercially available piezoelectric polymers such as polyvinylidene fluoride with d 33 = 30 pC/N. In addition, we have demonstrated the application of this paper as a tactile sensor.

show abstract

“…The study on the dielectric properties of PVDF thin films was concerned with the development of α‐PVDF films, which were then converted to β‐phase by appropriate thermo‐mechanical treatment . Mahadeva et al . studied the phase transition behavior of stretched and poled PVDF thin films.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Properties of γ‐Iirradiated, Stretched, and Poled PVDF Thin Films

Madivalappa

Jali

Jain

2019

Macromolecular Symposia

View full text Add to dashboard Cite

The effects of γ‐irradiation on the dielectric properties of stretched and poled polyvinylidene fluoride thin films synthesized by solvent cast method are reported. The films are subjected to γ‐irradiation with different doses (25, 50, and 75 kGy). XRD pattern is obtained to identify the presence of α/β phases. Dielectric constant and loss values of the stretched and poled films have been measured, before and after irradiation, and their nature of variation has been studied. β phase is retained even after the irradiation thereby confirming that the radiation damage is not significant. The dielectric loss is minimum in the frequency range 102 to104 Hz, giving the preferable frequency range of operation for devices

show abstract

Effect of poling time and grid voltage on phase transition and piezoelectricity of poly(vinyledene fluoride) thin films using corona poling

Cited by 103 publications

References 31 publications

Investigation of proton conductivity of anhydrous proton exchange membranes prepared via grafting vinyltriazole onto alkaline-treated PVDF

Investigation of proton conductivity of anhydrous proton exchange membranes prepared via grafting vinyltriazole onto alkaline-treated PVDF

Piezoelectric paper for physical sensing applications

Dielectric Properties of γ‐Iirradiated, Stretched, and Poled PVDF Thin Films

Contact Info

Product

Resources

About