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- W2076786616 abstract "Abstract We have synthesised three materials–chondroitin sulphate (ChS, a commercial product derived from shark cartilage and predominantly chondroitin‐6‐sulphate (Ch‐6‐S)) bound to pre‐formed hydroxyapatite (HA, Ca 10 (PO 4 ) 6 (OH) 2 ), HA formed in the presence of ChS and poly‐Asp bound to pre‐formed HA–to generate models for the mineral–organic interface in bone. The three materials have been investigated by 13 C cross polarisation magic‐angle spinning (CPMAS) NMR, 13 C{ 31 P} rotational echo double resonance (REDOR) and powder x‐ray diffraction (XRD) in order to verify their composition and to determine the nature of their binding to HA. Our results show that for HA formed in the presence of Ch‐6‐S, all carbon atoms in the Ch‐6‐S having contact with mineral phosphate. We propose that HA in this case forms all around the Ch‐6‐S polymer rather than along one face of it as is more commonly supposed in cases of templating by organic molecules. However, Ch‐6‐S binding to pre‐formed HA probably occurs via a surface layer of water on the mineral rather than to the mineral directly. In contrast, poly‐Asp binds closely to the pre‐formed HA surface and so is clearly able to displace at least some of the surface‐bound water. Copyright © 2008 John Wiley & Sons, Ltd." @default.
- W2076786616 created "2016-06-24" @default.
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- W2076786616 date "2008-02-27" @default.
- W2076786616 modified "2023-10-16" @default.
- W2076786616 title "Towards a model of the mineral–organic interface in bone: NMR of the structure of synthetic glycosaminoglycan- and polyaspartate-calcium phosphate composites" @default.
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- W2076786616 doi "https://doi.org/10.1002/mrc.2168" @default.
- W2076786616 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18306171" @default.
- W2076786616 hasPublicationYear "2008" @default.
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