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:
α-tricalcium phosphate (α-TCP) was prepared by a wet precipitation reaction betweencalcium hydroxide and orthophosphoric acid solutions. The as-synthesised powder was thencharacterised using a Scanning Electron Microscope (SEM) equipped with Energy DispersiveSpectroscope (EDS), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscope (FTIR).Analyses revealed that a phase-pure powder with a Ca/P ratio of 1.5 was produced. In addition,nanosized α-TCP particles of diameter ~ 70 nm were agglomerated to form larger particles of 10μmin diameter. It was found that by the combination of attritor milling and solution evaporation, theagglomerates of α-TCP nanoparticles could be broken down, and distributed evenly within thepoly(D,L-lactic-co-glycolic acid) (PLGA) matrix. Thus, a α-TCP/PLGA nanocomposite wassuccessfully produced by a modified solution evaporation method at room temperature followed byhot pressing at 150 °C. The achievable ceramic loading was approximately 38 wt.%, which wasconfirmed by thermal gravimetric analysis (TGA)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.511.pdf
