Abstract
A procedure is proposed to prepare poly(vinylidene fluoride) (PVDF)/multi-walled carbon nanotube (MWCNT) nanocomposite thin films with improved mechanical properties compared to the pure PVDF films. The PVDF/MWCNT mixture was formed using solution blending and the ultrasonic dispersion method and then spin-coated on a rotating glass substrate to produce films nearly 20 μm thick. The mechanical properties of the resulting films were examined and compared to the pure PVDF films through the mechanical tensile tests. The elastic modulus and fracture toughness after adding MWCNTs into PVDF will be discussed. These thin films are to be used to fabricate highly rugged acoustic sensors that will have the ability to withstand very high impulsive acceleration and have enough flexibility to be applied to irregular surfaces such as a helmet or clothing. The piezoelectric response of these films will also be discussed. [Work supported by the U.S. Army, contract # W15QKN-09-C-9999.]
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