5 research outputs found

    ИсслСдованиС волокнистых 3-Π΄ ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ€Π½Ρ‹Ρ… скэффолдов ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ элСктроформирования с ΠΌΠΈΠ½Π΅Ρ€Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒΡŽ Π²ΠΎΠ»ΠΎΠΊΠΎΠ½ для костной ΠΈΠ½ΠΆΠ΅Π½Π΅Ρ€ΠΈΠΈ

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    Π’ настоящСй Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Ρ‹ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ получСния Π½Π΅Ρ‚ΠΊΠ°Π½Ρ‹Ρ… волокнистых Ρ‚Ρ€Π΅Ρ…ΠΌΠ΅Ρ€Π½Ρ‹Ρ… скэффолдов Π½Π° основС полигидроксибутирата ΠΈΠ»ΠΈ полигидроксибутират-гидроксивалСрата с ΠΌΠΈΠ½Π΅Ρ€Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒΡŽ Π²ΠΎΠ»ΠΎΠΊΠΎΠ½ ΠΏΠΎ всСму ΠΎΠ±ΡŠΠ΅ΠΌΡƒ скэффолда, ΠΈ исслСдования ΠΈΡ… ΠΌΠΎΡ€Ρ„ΠΎΠ»ΠΎΠ³ΠΈΠΈ, химичСского состава ΠΈ структуры. Бкэффолды Π±Ρ‹Π»ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ элСктроформирования ΠΏΡ€ΠΈ скорости вращСния ΠΊΠΎΠ»Π»Π΅ΠΊΡ‚ΠΎΡ€Π° 1200 ΠΈΠ»ΠΈ 600 ΠΎΠ±/ΠΌΠΈΠ½. Для получСния ΠΏΠΎΠ»Π½ΠΎΡΡ‚ΡŒΡŽ ΠΏΠΎΠΊΡ€Ρ‹Ρ‚Ρ‹Ρ… Π²ΠΎΠ»ΠΎΠΊΠΎΠ½ повсСму ΠΎΠ±ΡŠΠ΅ΠΌΡƒ скэффолда частицами ΠΊΠ°Ρ€Π±ΠΎΠ½Π°Ρ‚Π° ΠΊΠ°Π»ΡŒΡ†ΠΈΡ использовалась ΡƒΠ»ΡŒΡ‚Ρ€Π°Π·Π²ΡƒΠΊΠΎΠ²Π°Ρ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Π² растворах хлористого ΠΊΠ°Π»ΡŒΡ†ΠΈΡ ΠΈ ΠΊΠ°Ρ€Π±ΠΎΠ½Π°Ρ‚Π° натрия. ΠžΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΠ»ΡΡ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒ массы ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² Π΄ΠΎ ΠΈ послС ΠΊΠ°ΠΆΠ΄ΠΎΠΉ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ. Для исслСдования ΠΌΠΎΡ€Ρ„ΠΎΠ»ΠΎΠ³ΠΈΠΈ скэффолдов использовалась ΡΠΊΠ°Π½ΠΈΡ€ΡƒΡŽΡ‰Π°Ρ элСктронная микроскопия. Для исслСдования структуры ΠΈ химичСского состава ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² использовались рСнтгСновский Ρ„Π°Π·ΠΎΠ²Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΈ энСргодиспСрсионная рСнтгСновская спСктроскопия, соотвСтствСнно

    Influence of Anodization Time and Voltage on the Parameters of TiO[2] Nanotubes

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    A vertically aligned titania nanotube layer was obtained by electrochemical anodic oxidation in the electrolyte contained 0.4 wt% solution of NH[4]F in 54 ml of ethylene glycol and 5 ml of deionized water, after titanium was chemically cleaned/etched with a mixture of HCl, H[2]O and HNO[3] solution for removing the natural oxide films. The morphology and composition of the titania nanotube layer were examined by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The anodization of TiO[2] nanotubes was done using 60 V for 240 min and 30 min, and 30 V for 30 min. The diameter of the titania nanotubes was about 52-156 nm, the wall thickness about 32-53 nm and the height about 0.9-6.3 [mu]m. The pore size of TiO[2] nanotubes influences the dissolution rate of CaP thin films and Young's modulus, which is significantly lower than that of the Ti substrate. Our future challenge will be investigation of the microstructure and mechanical behavior of titania nanotubes with CaP film

    Influence of Calcium-Phosphate Coating on Wettability of Hybrid Piezoelectric Scaffolds

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    Herein, electrospun biodegradable scaffolds based on polycaprolactone (PCL), poly(3-hydroxybutyrate) (PHB) and polyaniline (PANi) polymers were fabricated. A calcium-phosphate (CaP) coating was deposited on the surface of the scaffolds via an improved soaking process. Influence of the deposition cycles and ethanol concentration in the solution on the relative increase of the scaffolds weight and water contact angle (WCA) are determined. The characterization of the molecular and crystal structure confirmed the formation of CaP phase. Importantly, WCA results showed that the pristine scaffolds have the hydrophobic surface, while the deposition of CaP coating onto scaffolds allows to significantly improve the surface wetting behavior, and infiltration of the water droplets into the CaP-coated scaffolds was observed. Thus, the fabricated hybrid biodegradable piezoelectric scaffolds can be utilized for regenerative medicine
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