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  • 1
    Electronic Resource
    Electronic Resource
    Preparation of Apatite-Containing Calcium Phosphate Glass-Ceramics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 157-160 
    Details
    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: A new type of glass-ceramic for novel dental fillers, which require excellent chemicaldurability, was investigated. A 40CaO-5CaF2-25TiO2-30P2O5 (in mol%) glass-ceramic was newlysuggested. The glass-ceramic was prepared by a conventional two-step heating method. Theresulting glass-ceramic included Nasicontype-CaTi4(PO4)6, titanium phosphates, such as(TiO)2P2O7 and Ti(PO3)3, and TiO2 (anatase) with apatite crystal, which was induced byincorporation of fluorine. In the glass-ceramic, dissolution by acid-treatment was strictly controlled.The excellent chemical durability of the glass-ceramic was suggested to originate from increase inthe amount of the crystalline phases and a high content of titanium constituent in the residual glassyphase
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.157.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of Poly(L-lactic Acid) Hybrid Membrane with Silicon-Ion-Releasing Ability (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 1305-1308 
    Details
    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: A novel poly(lactic acid) (PLA)/calcium carbonates hybrid membrane containing siloxanewas prepared using aminopropyltriethoxysilane (APTES) for biodegradable bone guidedregeneration. The PLLA in the membrane was an amorphous phase. By heating the membrane at 100°C for 1 h, the PLLA in the membrane crystallized. Numerous pores of 0.5-1 ,m in diameter werenewly formed at the surface. After soaking the membranes before and after heat-treatment insimulated body fluid, the amount of silicon species in SBF released from the membrane afterheat-treatment was higher than that before heat-treatment. A test of osteoblast-like cellularproliferation on the membrane showed the membrane after heat-treatment has much highercell-proliferation ability than that before heat-treatment
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1305.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation of Zinc Phosphate Glass-Derived Hydrogels and Their Proton Conductivities (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 11-12 (Feb. 2006), p. 153-158 
    Details
    ISSN: 1662-8985
    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: When fine-sized 45ZnO·55P2O5 or 50ZnO·50P2O5 glass powders were mixed withdistilled water, hydration immediately occurred, resulting in the formation of viscous hydrogels. 31PMAS-NMR spectra showed that the hydrogels contain orthophosphates and long-chain phosphates;no significant differences in their structures between the hydrogels were shown. The 45ZP gel and50ZP gel showed high conductivities (e.g., 9.9 and 2.8 mS/cm, respectively, at 30°C). Theconductivities were related to the proton amount in the hydrogel; the amount in the 45ZP gel waslarger than that in the 50ZP gel. Electric double-layer capacitors (EDCs) were prepared usingelectrolytes consisting of the hydrogels. The specific capacities of the EDC cell for the 45ZP gel and50ZP gel were 2.40 and 2.06 F/g, respectively. The possibility as an EDC electrolyte may be related toproton conductivities of the hydrogels
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.153.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Preparation of Silicon-Containing Apatite Coating on Titanium (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 801-804 
    Details
    ISSN: 1662-8985
    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: A silicon-containing apatite layer was prepared on a metallic titanium substrate coatedwith a silica layer. The silica layer on a titanium substrate was derived from water glass throughheat-treatment at 300 °C for 2 hr and subsequent acid-treatment using 0.1 N-HCl at 50 °C for 2 hr.The silica layer was homogeneously coated with nano-sized vaterite powders (~ 0.5 μm in diameter).The vaterite coating was achieved by utilizing the interaction of surface potentials between thepositively charged vaterite and the negatively charged silica layer. After soaking the sample insimulated body fluid at 37 °C for 3 days, hydroxyapatite (HA) formed on the surface of thesilica-coated titanium. The HA layer was found to include a trace amount of releasable silicon, whichmay enhance the osteoblast proliferation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.801.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of Macroporous Glass-Ceramic Composites Containing β-TCP (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 11-12 (Feb. 2006), p. 223-226 
    Details
    ISSN: 1662-8985
    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: A macroporous phosphate invert glass ceramic (PIGC) was prepared by dipping polymersponges in the powder-slurry of the mother glass with a composition of 60CaO-30P2O-3TiO2-7Na2O in mol%, and subsequent burning off the sponge at 850°C for 1 hr. The macroporousPIGC consists predominantly of ß-tricalcium phosphate (β-TCP) and ß-calcium pyrophosphate, andit has macropores of 500 μm in diameter and porosity of 83 %. Its compressive strength wasestimated to be 160 kPa. The PIGC composite containing a large amount of β-TCP was alsoprepared by heating the mixture of Ca(OH)2 with the mother glass powders of the PIGC.Solubility of the composite was higher than PIGC. The macroporous PIGC and PIGC compositewere expected to be applicable in high resorbable scaffolds for bone tissue engineering
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.223.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Preparation of Calcium Carbonate (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 487-490 
    Details
    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: Mercapto group controls the adsorption and release of insulin, which is one of theproteins for enhancing the osteoblast proliferation. Silicon-ion-species were reported to stimulatethe bone-forming ability of osteoblasts. The present paper describes doping with mercapto groupsand silicon-ion-species in a calcium carbonate/poly (lactic acid) composite membrane, which isprepared by a sol-gel method using 3-mercaptopropyltrimethoxysilane. The membrane wasamorphous and showed high flexibility. A quantitative analysis by thiol-disulfide exchange reactionusing 2, 2-dipyridyl disulfide reagent showed that the amount of mercapto group existing onmembrane surface was estimated to be about 5.51μmol/cm2. A trace amount of silicon-ion-specieswas released from the membrane after soaking in tris (hydroxymethyl) aminomethane buffersolution at 37 oC. The membrane is expected to have high bone-forming ability
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.487.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Silicon-Doped Bonelike Apatite (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 519-522 
    Details
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.519.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation of Fast Proton-Conducting Phosphate Glass-Derived Hydrogels and their Electrochemical Properties (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 15-17 (Feb. 2006), p. 327-332 
    Details
    ISSN: 1662-8985
    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: When fine-sized 45ZnO·55P2O5 glass powders were mixed with water, hydrationimmediately occurred, resulting in the formation of a viscous hydrogel. 31P MAS-NMR spectrashowed that the hydrogel contains orthophosphates and long polyphosphates. 45ZnO·55P2O5glass-derived hydrogel (45ZP gel) showed high conductivities of 9.9 mS/cm at 30 ºC. Theconductivities were related to the proton amount in the hydrogel. The electric double-layer capacitor(EDC) cell for the 45ZP gel showed no oxidation-reduction processes in the range of 0~1 V and thespecific capacities of 2.40 F/g. The possibility as an EDC electrolyte may be related to theconductivities of the hydrogels
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.327.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Amorphous Calcium Silicate Coating on Metallic Titanium (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 11-12 (Feb. 2006), p. 235-238 
    Details
    ISSN: 1662-8985
    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: Amorphous calcium silicate coating on a metallic titanium substrate for hard tissuereplacement was prepared by a sol-gel method. Calcium silicate film was deposited on a titaniumsubstrate by a spin-coating technique and subsequently heated at 500°C for 2 h in air. The depositedfilm, which was dense, had thickness of about 800 nm and strongly adhered to the substrate.Biomimetic apatite-forming ability of the deposited films was examined by soaking in simulated bodyfluid (SBF). Thin film X-ray diffractometry and scanning electron microscopy showed the formationof apatite on the surface after 10 days of soaking in SBF
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.235.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Apatite-Coated Poly(lactic acid) Composites with Cell-Compatibility Prepared by a Biomimetic Method (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 11-12 (Feb. 2006), p. 239-242 
    Details
    ISSN: 1662-8985
    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: A new type of poly(lactic acid) (PLA)/calcium carbonates hybrid membrane incorporatedwith silicon, which is suggested to stimulate the formation of bones, was prepared usingaminopropyltriethoxysilane (APTES) for bone repair materials. Carboxyl groups in PLA made achemical bond with amino groups in APTES, resulting in the formation of the hybrid membrane. Themembrane formed hydroxycarbonate apatite (HCA) on its surface after 3 days of soaking in simulatedbody fluid (SBF). X-ray energy dispersive spectroscopy showed the HCA layer includes Si with Caand P. A result of osteoblast-like cellular proliferation on the substrates that the membrane coatedwith silicon-containing HCA had much higher cell-proliferation ability than the membrane
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.239.pdf
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