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Poly vinylidene fluoride film

The anisotropy of piezoelectricity in oriented polymer films is quite different among polymers. The piezoelectric effect in oriented polypeptide films is greatest when elongated along a direction at 45° to the draw-axis. On the contrary, the effect is most remarkable for elongation along the draw-axis for roll-drawn poly(vinylidene fluoride) film. [Pg.3]

Fig. 25. Ratio of electrostriction constant to dielectric constant of roll-drawn poly(vinylidene fluoride) film (draw-ratio = 2.3) plotted against angle 0 between elongational strain and draw-axis. Drawn after Nakamura and Wada [J. Polymer Sci. A-2,9,161 (1971)] by permission of John Wiley Sons, Inc. Fig. 25. Ratio of electrostriction constant to dielectric constant of roll-drawn poly(vinylidene fluoride) film (draw-ratio = 2.3) plotted against angle 0 between elongational strain and draw-axis. Drawn after Nakamura and Wada [J. Polymer Sci. A-2,9,161 (1971)] by permission of John Wiley Sons, Inc.
Fig. 26. Correlation between increment of spontaneous polarization from 80° C to 15° C and piezoelectric strain constant at room temperature for /9-form polarized poly(vinylidene fluoride) films. Poling temperature = 90° C. Poling field = 700 kV/cm (Murayama, 1972)... Fig. 26. Correlation between increment of spontaneous polarization from 80° C to 15° C and piezoelectric strain constant at room temperature for /9-form polarized poly(vinylidene fluoride) films. Poling temperature = 90° C. Poling field = 700 kV/cm (Murayama, 1972)...
Fig. 28. Piezoelectric stress constant obtained from inverse piezoelectric effect and electrostriction constant of drawn and polarized poly(vinylidene fluoride) film plotted against temperature. Draw ratio = 7. Polarized at 90° C under the field of 400 kV/ctn for 3 hours. Frequency of applied voltage = 37.5 Hz. (Oshiki and Fukada, 1971) Broken line represents dielectric constant at 21.5 Hz for roll-drawn poly (vinylidene fluoride) film (Peterlin and Eiweil, 1969)... Fig. 28. Piezoelectric stress constant obtained from inverse piezoelectric effect and electrostriction constant of drawn and polarized poly(vinylidene fluoride) film plotted against temperature. Draw ratio = 7. Polarized at 90° C under the field of 400 kV/ctn for 3 hours. Frequency of applied voltage = 37.5 Hz. (Oshiki and Fukada, 1971) Broken line represents dielectric constant at 21.5 Hz for roll-drawn poly (vinylidene fluoride) film (Peterlin and Eiweil, 1969)...
Sakurai,T. Piezoelectricity in polarized poly(vinylidene fluoride) films. Polymer J. 2,676 (1971). [Pg.53]

G.N. Richard, Ion-exchange membranes by sulfonation of poly(vinylidene fluoride) films. J. Appl. Polym. Sci., 1964, 8, 2269-228. [Pg.76]

Scheinbeim, J. 1., Newman, B. A., Sen. A., (1986), Field-induced crystallization in highly plasticized poly(vinylidene fluoride) films. Macromolecules, Vol. 19 (November, 1985), PP. 1454-1458. ISSN 0024-9297. [Pg.231]

Nasef, M.M., Saidi, H. and Dahlan, K.Z.M. 2010a. Acid synergized grafting of sodium styrene sulfonate onto electron beam irradiated poly(vinylidene fluoride) films for preparation of fuel cell membrane. 118 2801-2809. [Pg.406]

MICROSTRUCTURE AND PIEZOELECTRICITY IN POLY (VINYLIDENE FLUORIDE) FILMS... [Pg.895]

Bunn CW, Alcock TC (1945) The texture of polyethylene. Trans Faraday Soc 41 317-325 Cardoso VF, Minas G, Lanceros-Mendez S (2012) Multilayer spin-coating deposition of poly (vinylidene fluoride) films for controlling thickness and piezoelectric response. Sens Actuators A Phys 192 76-80... [Pg.25]

N. Walsby, M. Paronen, J. Juhanoja and F. Sundholm, Radiation giafting of styrene onto poly(vinylidene fluoride) films in propanol The influence of solvent and synthesis conditions, J. Polym. Sci. A Polym. Chem. 38, 1512 (2000). [Pg.109]

Vogel C, Wessel E, Siesler HW. Fourier transform infrared spectroscopic imaging of anisotropic poly(vinylidene fluoride) films with polarized radiation. Appl Spectrosc 2008 62 599-603. [Pg.130]

Miyazaki T, Takeda Y, Akasaka M, Sakai M, Hoshiko A. Preparation of isothermally crystallized y-form poly(vinylidene fluoride) films by adding a KBrpowder as a nucleating agent. Macromolecules 2008 41 2749-53. [Pg.312]

This technique was then applied with poly(vinylidene fluoride) films to a maximum draw ratio of 7 at 120 C. PVF2 was of interest because of its piezoelectric properties, the films had a moderate modulus, and complex melting behavior (31,32). [Pg.308]

Branciforti, M.C., Sencadas, V, Lanceros-Mendez, S., Gregorio Jr., R., 2007. New technique of processing highly oriented poly(vinylidene fluoride) films exclusively in the p phase. J. Polym. Sci. B Polym. Phys. 45, 2793-2801. [Pg.213]

See other pages where Poly vinylidene fluoride film is mentioned: [Pg.659]    [Pg.263]    [Pg.276]    [Pg.90]    [Pg.196]    [Pg.216]    [Pg.127]   


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