Piezoelectric Porous Polyurethane Fiber doped with Polyacrylic acid
발표자
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초록
내용
Energy harvesting is a technology that collects and stores energy from nature. Solar power, power generation through external mechanical stress, friction inversion using static electricity, and thermoelectric power generation using thermal energy are them. In this study, we present flexible, stretching molecularly doped polyurethane foam fiber for energy harvesting. Due to the space charge effect of Micro size pores in foam fiber, electricity can be generated by piezoelectric effect. Polyurethane foam fibers containing pores are manufactured inside the fiber due to phase separation and precipitation formation due to the mixing of water and DMF and reduced polyurethane solubility. The resulting foam fiber is processed by knitting to manufacture a fabric, and a pressure sensor is manufactured by using a copper mesh plate electrodes to maximize the aggregation of the generated power. We characterize the morphology of foam fibers and the effect of dopant and pore size on piezoelectricity.