Analysis of the crystalline phase transformation of poly(vinylidene fluoride)

1985 ◽  
Vol 18 (12) ◽  
pp. 2583-2587 ◽  
Author(s):  
S. L. Hsu ◽  
F. J. Lu ◽  
D. A. Waldman ◽  
M. Muthukumar
Keyword(s):  
Phase Transformation ◽  
Crystalline Phase ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride

Enhanced β-crystalline phase in poly(vinylidene fluoride) films by polydopamine-coated BaTiO3 nanoparticles

2015 ◽  
Vol 139 ◽  
pp. 212-215 ◽  
Author(s):  
Nan Jia ◽  
Qian Xing ◽  
Guangmei Xia ◽  
Jing Sun ◽  
Rui Song ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride ◽  
Batio3 Nanoparticles

scholarly journals Electrostrictive and Structural Properties of Poly(Vinylidene Fluoride-Hexafluoropropylene) Composite Nanofibers Filled with Polyaniline (Emeraldine Base)

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3250
Author(s):  
Nikruesong Tohluebaji ◽  
Chatchai Putson ◽  
Nantakan Muensit ◽  
Jureeporn Yuennan
Keyword(s):  
Dielectric Properties ◽  
Structural Properties ◽  
Crystalline Phase ◽  
Phase Structure ◽  
Composite Nanofibers ◽  
Microelectromechanical Systems ◽  
Vinylidene Fluoride ◽  
Emeraldine Base ◽  
Pani Composite ◽  
Poly Vinylidene Fluoride

Previous studies have reported that poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)) copolymers can exhibit large electrostrictive strains depending on the filler. This work examines the electrostrictive and structural properties of P(VDF-HFP) nanofibers modified with conductive polymer polyaniline (PANI). The P(VDF-HFP)/PANI composite nanofibers were prepared by an electrospinning method with different PANI concentrations (0, 0.5, 1, 1.5, 3 and 5 wt.%). The average diameter, water contact angle and element were analyzed by SEM, WCA and EDX, respectively. The crystalline, phase structure and mechanical properties were investigated by XRD, FTIR and DMA, respectively. The dielectric properties and electrostrictive behavior were also studied. The results demonstrated that the composite nanofibers exhibited uniform fibers without any bead formation, and the WCA decreased with increasing amount of PANI. However, a high dielectric constant and electromechanical response were obtained. The electrostrictive coefficient, crystalline, phase structure, dielectric properties and interfacial charge distributions increased in relation to the PANI content. Moreover, this study indicates that P(VDF-HFP)/PANI composite nanofibers may represent a promising route for obtaining electrostrictive composite nanofibers for actuation applications, microelectromechanical systems and sensors based on electrostrictive phenomena.

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