Articles you may be interested inPreparation of graphene oxide/epoxy nanocomposites with significantly improved mechanical properties J. Appl. Phys. 116, 053518 (2014); 10.1063/1.4892089 Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of β-crystal polymorph rich matrix through mechanical activation of the filler J. Appl. Phys. 115, 084109 (2014); 10.1063/1.4866694 Thermal property and assessment of biocompatibility of poly(lactic-co-glycolic) acid/graphene nanocomposites J. Appl. Phys. 115, 054701 (2014); 10.1063/1.4864263 Enhanced dielectric properties of BaTiO3/poly(vinylidene fluoride) nanocomposites for energy storage applications J. Appl. Phys. 113, 034105 (2013); 10.1063/1.4776740 Structural and optoelectronic properties of P3HT-graphene composites prepared by in situ oxidative polymerizationPoly(vinylidene fluoride)/graphene oxide (PVDF/GO) nanocomposites are synthesized and their structural, ferroelectric, and pyroelectric properties are investigated. The dielectric spectrum analysis and P-E loop tests indicate that the nanocomposites exhibit enhanced ferroelectric and pyroelectric properties compared with those of poly(vinylidene fluoride) samples. The isothermal crystallization kinetics of PVDF/GO nanocomposites quantitatively determined by differential scanning calorimetry demonstrates that GOs facilitate the crystallization of the PVDF. Dynamic mechanical analyses on the PVDF/GO reveal that the amorphous and crystalline phases of PVDF are modified by the addition of GO sheets. The GO-enhanced formation of crystalline b phase in PVDF could result from the strong interaction between the -C ¼ O groups in GO and the -CF 2 groups in PVDF, and the GO-induced ordering of the microstructures of amorphous and crystalline phases. The results suggest that PVDF/GO nanocomposites could be promising dielectric materials used in sensors, transducers, and actuators. V C 2014 AIP Publishing LLC. [http://dx.