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  • 1
    Electronic Resource
    Electronic Resource
    Preparation of Macroporous Hydroxyapatite/Chitosan-Alginate Composite Scaffolds for Bone Implants (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 342-343 (July 2007), p. 217-220 
    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: Porous HAp/chitosan-alginate composite scaffolds were successfully synthesized by insituco-precipitation method. During the preparation of HAp/chitosan-alginate composite scaffolds,the interaction between chitosan-alginate molecules would be reduced with increasing HAp content,with the resulting that the chitosan-alginate molecules were homogeneously dispersed in thecomposite scaffolds. The chitosan-alginate content was found to be almost consistent as initiallyadded during the preparation. These results imply that chitosan-alginate was almost perfectlyincorporated into the composites. It was found that the pore structure of the composite scaffoldswith low HAp content was similar to chitosan-alginate scaffolds, and the morphology of uniformmicrostructure was unaffected by the presence of HAp. However, the pore diameter decreased withincreasing the HAp content up to HAp content of 30 wt%, eventually the pore structure wascollapsed and the composites scaffolds appeared to be agglomerated at higher HAp content
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.342-343.217.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Monodispersed and Nano-Sized Cu Powders (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 534-536 (Jan. 2007), p. 109-112 
    Details
    ISSN: 1662-9752
    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: Monodispersed and nano-sized Cu powders were synthesized from copper sulfatepentahydrate (CuSO4ㆍ5H2O) inside a nonionic polymer matrix by using wet chemical reductionprocess. The sucrose was used as a nonionic polymer network source. The influences of a nonionicpolymer matrix on the particle size of the prepared Cu powders were characterized by means of Xraydiffraction (XRD), scanning electron microscopy (SEM), and particle size analysis (PSA). Thesmallen Cu powders with size of approximately 100㎚ was obtained with adding of 0.04M sucroseat reaction temperature of 60℃. The particle size of the Cu powders prepared by the reductioninside polymer network was strongly dependent of the sucrose content and reaction temperature
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.109.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    In Vitro Evaluation of Poly ε-Caprolactone/Hydroxyapatite Composite as Scaffolds for Bone Tissue Engineering with Human Bone Marrow Stromal Cells (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 342-343 (July 2007), p. 369-372 
    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: This study evaluated the potential of the PCL (poly [removed info]-caprolactone)/HA(Hydroxyapatite)composite materials as a scaffold for bone regeneration. For this, we fabricated scaffolds utilizingsalt leaching method. The PCL/HA composite scaffolds were prepared with various HA contents(20wt%, 40wt%, 60 wt %). To ensure the potential for the scaffolds, porosity tests were conductedalong with SEM observations. The porosity decreased with the increase of the contents of HAparticles. The porosity of the composite with the highest contents of HA was still adoptable (~85%).In addition, the PCL/HA composite scaffolds were evaluated for their ability of osteogenicdifferentiation with human bone marrow stromal cell (hBMSC) in vitro. Alkaline phosphatase(ALP) activity, markers for osteoblastic differentiation, and total protein contents were evaluated inhBMSCs following 14 days of cultivation. The addition of HA particles enhanced proliferation ofhBMSC during the test. Also, the differentiation ability of the cells was increased as HA particleswere added. In this study, we concluded that PCL/HA composite scaffolds has great potential as ascaffold for bone tissue engineering
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.342-343.369.pdf
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    Paper (German National Licenses)
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