The cross-linkage effect of hydroxyapatite/collagen nanocomposites on a self-organization phenomenon View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2002-10

AUTHORS

M. C. Chang, T. Ikoma, M. Kikuchi, J. Tanaka

ABSTRACT

Hydroxyapatite(HAp)/collagen nanocomposites were prepared by a coprecipitation method controlling the degree of cross-linkage between collagen molecules using glutaraldehyde. The precipitates filtered were dried in a freeze drier or naturally dried in the air at 25 °C. The naturally dried cakes had open channels of 5–15 μm in diameters, which were three-dimensionally and regularly developed over the whole samples, and showed a pretty good mechanical strength. The channels that were formed at spaces among the HAp/collagen particles, cross-linked one another, which had been filled up with water before its evaporation. The ordering state of the open channels depended on the degree of cross-linkage with glutaraldehyde; the optimal self-organized state was found when 30 molecules of glutaraldehyde were added per collagen molecule, though an excess amount of glutaraldehyde suppressed the appearance of the ordered state. From SEM and FT-IR measurements, it was indicated that the self-organization in the HAp/collagen nanocompsites continuously occurred during the drying process together with the removal of water and the increase of the density. More... »

PAGES

993-997

References to SciGraph publications

  • 1994-06. Evaluation of alternative glutaraldehyde stabilization strategies for collagenous biomaterials in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • 1994-02. Optimizing glutaraldehyde crosslinking of collagen: effects of time, temperature and concentration as measured by shrinkage temperature in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • 1994-02. Bone composite behaviour: effects of mineral-organic bonding in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • 1994-04. The effect of drilling parameters on bone in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • 1997-12. Effect of crosslinking agents on poly(ethylmethacrylate) bone cements in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • 1997-10. Fourier-transform infrared spectroscopy study of an organic–mineral composite for bone and dental substitute materials in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1023/a:1019825132610

    DOI

    http://dx.doi.org/10.1023/a:1019825132610

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1030156296

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/15348195


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