کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1251314 970900 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation of Ultrafine Apatite Fibers by Sol-gel/Electrospinning
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Formation of Ultrafine Apatite Fibers by Sol-gel/Electrospinning
چکیده انگلیسی
Ultrafine apatite fibers were prepared by electrospinning of sol-gel precursor/poly(vinyl pyrrolidone) (PVP) solutions followed by subsequent calcination. The as-electrospun and calcinated fibers were observed under a scanning electron microscope and an optical polarizing microscope. Results show that the morphology and the diameter of as-electrospun fibers strongly depend on the viscosity and the surface tension of sol-gel precursor/PVP solutions. After calcination, the smooth as-electrospun fibers shrink and the fiber diameter decreases because of the removal of the polymer. The chemical evolution upon the transformation of the precursor from a gel to the final apatite fibers was investigated by thermogravimetric-differential thermal analysis, X-ray diffraction, and Fourier transform infrared spectroscopy. It is thus suggested that the crystalline structure of the calcined fibers is largely influenced by the calcination temperature. After being calcined at 600 °C, the apatite fibers with a diameter of about 280 nm containing β-tricalcium phosphate were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Research in Chinese Universities - Volume 23, Issue 3, May 2007, Pages 366-369
نویسندگان
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