title: Intergrowth and interfacial structure of biomimetic fluorapatite-gelatin nanocomposite: a solid-state NMR study.
abstract: The model system fluorapatite-gelatin allows mimicking the formation conditions on a lower level of complexity compared to natural dental and bone tissues. Here, we report on solid-state NMR investigations to examine the structure of fluorapatite-gelatin nanocomposites on a molecular level with particular focus on organic-inorganic interactions. Using (31)P, (19)F, and (1)H MAS NMR and heteronuclear correlations, we found the nanocomposite to consist of crystalline apatite-like regions (fluorapatite and hydroxyfluorapatite) in close contact with a more dissolved (amorphous) layer containing first motifs of the apatite crystal structure as well as the organic component. A scheme of the intergrowth region in the fluorapatite-gelatin nanocomposite, where mineral domains interact with organic matrix, is presented.
authors.affiliation: Leibniz-Institut für Polymerforschung Dresden e.V. , Hohe Strasse 6, 01069 Dresden, Germany.
authors.forename: Anastasia
authors.initials: A
authors.lastname: Vyalikh
authors.forename: Paul
authors.initials: P
authors.lastname: Simon
authors.forename: Elena
authors.initials: E
authors.lastname: Rosseeva
authors.forename: Jana
authors.initials: J
authors.lastname: Buder
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Kniep
authors.forename: Ulrich
authors.initials: U
authors.lastname: Scheler
mesh_terms: D001031:Apatites / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry*; D005780:Gelatin / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D053761:Nanocomposites / Q000737:chemistry*
chemical_list: D001031:Apatites; D005780:Gelatin; C025105:fluorapatite