Erina Fukada

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Poly(L-lactide) (PLLA) was molded into films and rods, and drawn in the longitudinal direction to endow them with piezoelectricity. The piezoelectric constants of PLLA films increased with the draw ratio and, after passing a maximum at a draw ratio around 5, decreased. PLLA samples with a draw ratio 5 underwent fibrilization. The PLLA rods were(More)
The steady flow viscosity at shear rates 0 to 120 sec-1 and dynamic viscoelasticity at frequencies 0.02 to 0.8 Hz were determined for aqueous suspensions of uniform polystyrene microspheres of 1.0 micron diameter. Rheological properties of the microsphere suspensions were Newtonian for particle concentrations up to 32%. By introducing dextran and calcium(More)
Uniaxially drawn poly-L-lactic acid (PLLA) films with piezoelectric properties were inserted onto the periosteum of rabbit tibiae, and the effect of the films in promoting ossification was investigated. We also evaluated the optimum method for PLLA film insertion to promote ossification, by comparing three different types of PLLA films which differed from(More)
Electric polarization is important in various subjects in biorheology. Piezoelectricity, that is, stress-induced polarization and electric field-induced strain, is demonstrated in a variety of biological materials including polysaccharides, proteins and deoxyribonucleic acid. Complex piezoelectric constant depends on measuring frequency, temperature and(More)
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