ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Bioresorbable calcium metaphosphate (CMP) nanofibers were produced by anelectrospinning technique. In order to produce the nanofibers, CMP sol was prepared by the mixing oftwo precursors, such as calcium nitrate tetrahydrate (Ca[NO3]⋅4H2O) and triethyl phosphate (TEP,[C2H5O]3PO), using methyl alcohol as a solvent. The Ca/P ratio of the mixture was set to be 0.50 toproduce stoichiometric CMP sol. At least 5 hrs of pre-hydrolysis of phosphorus precursor wererequired to obtain β-CMP phase. Viscous solutions for the electrospinning were made by the mixingof CMP sol and high-molecular weight polymeric solution at various ratios. The ratio of CMP sol andpolymer solution was controlled to obtain an appropriate viscosity for the electrospinning.As-electrospun CMP nanofibers were dried in a drying oven at 70°C for 24 hrs and then heat-treatedat various temperatures at a ramp of 1°C/min in air for 1hr. The as-electrospun and heat-treated CMPnanofibers were characterized using X-ray analysis, FT-IR, TG-DTA and SEM techniques. Theresults showed that the preparation of CMP sol, mixed solution properties, and heat-treatmentcondition of as-electrospun nanofibers significantly affect the spinability and surface morphology ofthe CMP nanofibers
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.207.pdf
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