Impact of crystallization on ferro-, piezo- and pyro-electric characteristics in thin film P(VDF–TrFE)

Aliane, A.; Benwadih, M.; Bouthinon, Benjamin; Coppard, R.; Santos, Fabrice Domingues-dos; Daami, Anis

doi:10.1016/j.orgel.2015.06.007

Cited by 46 publications

(34 citation statements)

References 27 publications

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“…These results are consistent with the observations made by Choi et al . for thick multi‐layer Langmuir–Blodgett films and spin coated bulk P(VDF‐TrFE) films . This dilation of d spacing is prominent in P(VDF‐TrFE) rich melt‐mixed blends.…”

Section: Resultssupporting

confidence: 92%

Evolution of morphology, ferroelectric, and mechanical properties in poly(vinylidene fluoride)–poly(vinylidene fluoride‐trifluoroethylene) blends

Ganesan

Mallikarjunachari

Jatav

et al. 2017

J of Applied Polymer Sci

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Considering the complementary properties of poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride‐trifluoroethylene) [P(VDF‐TrFE)], it appears that their blends have the potential to be promising candidates for device applications. We report the evolution of morphology, ferroelectric, and mechanical properties (modulus and hardness) and their dependence on preparation temperature for PVDF–P(VDF‐TrFE) blends. From ferroelectric hysteresis measurements it was found that P(VDF‐TrFE) rich blends treated at higher temperature show significant values of remanent polarization. Remanent polarization values show a fourfold increase in these P(VDF‐TrFE) rich blends treated at higher temperature. Interestingly, blends prepared from high temperature showed greater value of remanent polarization even though they were found to consist of smaller amount of electroactive phase as compared to their low temperature treated counterpart. Nanoindentation experiments revealed that high temperature treatment improves the modulus of blends by at least 100%. This report attempts to tie these findings to the morphology and crystallinity of these blends. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45955.

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Section: Resultssupporting

confidence: 92%

Evolution of morphology, ferroelectric, and mechanical properties in poly(vinylidene fluoride)–poly(vinylidene fluoride‐trifluoroethylene) blends

Ganesan

Mallikarjunachari

Jatav

et al. 2017

J of Applied Polymer Sci

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“…For example, a low T c of 105 C was measured for a copolymer of 70/30 composition ratio. 88 A previous study 89 demonstrated that T c is 70-80 C for a 65/ 35 mol% P(VDF-co-TrFE) copolymer, which was observed as a decrease in the intensity of the XRD diffraction peak at 2q ¼ 19.5 (b-phase), and the emergence of a second peak at 2q ¼ 18.2 (a-phase) as the temperature increased above 80 C. The all-trans peak vanished at 100 C (lower than the melting temperature, T m $ 153 C). In the temperature between T c and T m , the polymer chains move more freely to reorganise into higher degree of crystallinity.…”

Section: Structure Of Polyvinylidene Uoride (Pvdf) and Polymorphsmentioning

confidence: 99%

“…For a P(VDF-co-TrFE) copolymer with a composition ratio of 72.2/27.8 mol%, 88 the polymer chain length affects the conformations. It was found that a short polymer chain length leads to a higher crystal size and promotes a higher b-phase content; the d 33 piezoelectric coefficient was enhanced by decreasing the molecular weight (M w ) of the copolymer.…”

Section: Structure Of Polyvinylidene Uoride (Pvdf) and Polymorphsmentioning

confidence: 99%

Multiscale-structuring of polyvinylidene fluoride for energy harvesting: the impact of molecular-, micro- and macro-structure

2017

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“…After each deposition, the layer is annealed for 15 min at 135 • C in an infrared oven. It allows the solvent to evaporate and the PVDF-TrFE film to crystallize [11].…”

Section: Electro-active Polymermentioning

confidence: 99%

Static and Dynamic Studies of Electro-Active Polymer Actuators and Integration in a Demonstrator

et al. 2017

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Nowadays, the haptic effect is used and developed for many applications-particularly in the automotive industry, where the mechanical feedback induced by a haptic system enables the user to receive information while their attention is kept on the road and on driving. This article presents the development of a vibrotactile button based on printed piezoelectric polymer actuation. Firstly, the characterization of the electro-active polymer used as the actuator and the development of a model able to predict the electromechanical behavior of this device are summarized. Then, the design of circular membranes and their dynamic characterization are presented. Finally, this work is concluded with the construction of a fully functional demonstrator, integrating haptic buttons leading to a clear haptic sensation for the user.

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Impact of crystallization on ferro-, piezo- and pyro-electric characteristics in thin film P(VDF–TrFE)

Cited by 46 publications

References 27 publications

Evolution of morphology, ferroelectric, and mechanical properties in poly(vinylidene fluoride)–poly(vinylidene fluoride‐trifluoroethylene) blends

Evolution of morphology, ferroelectric, and mechanical properties in poly(vinylidene fluoride)–poly(vinylidene fluoride‐trifluoroethylene) blends

Multiscale-structuring of polyvinylidene fluoride for energy harvesting: the impact of molecular-, micro- and macro-structure

Static and Dynamic Studies of Electro-Active Polymer Actuators and Integration in a Demonstrator

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