Polymer-functionalised nanograins of Mg-doped amorphous calcium carbonate via a flow-chemistry approach

Benedikt Demmert, Frank Schinzel, Martina Schüßler, Mihail Mondeshki, Joachim Kaschta, Dirk W. Schubert, Dorrit E. Jacob, Stephan E. Wolf*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)
    11 Downloads (Pure)

    Abstract

    Calcareous biominerals typically feature a hybrid nanogranular structure consisting of calcium carbonate nanograins coated with organic matrices. This nanogranular organisation has a beneficial effect on the functionality of these bioceramics. In this feasibility study, we successfully employed a flow-chemistry approach to precipitate Mg-doped amorphous calcium carbonate particles functionalized by negatively charged polyelectrolytes-either polyacrylates (PAA) or polystyrene sulfonate (PSS).We demonstrate that the rate of Mg incorporation and, thus, the ratio of the Mg dopant to calcium in the precipitated amorphous calcium carbonate (ACC), is flow rate dependent. In the case of the PAA-functionalized Mg-doped ACC, we further observed a weak flow rate dependence concerning the hydration state of the precipitate, which we attribute to incorporated PAA acting as a water sorbent; a behaviour which is not present in experiments with PSS and without a polymer. Thus, polymer-dependent phenomena can affect flow-chemistry approaches, that is, in syntheses of functionally graded materials by layer-deposition processes.

    Original languageEnglish
    Article number1818
    Pages (from-to)1-13
    Number of pages13
    JournalMaterials
    Volume12
    Issue number11
    DOIs
    Publication statusPublished - 1 Jun 2019

    Bibliographical note

    Copyright the Author(s) 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

    Keywords

    • amorphous calcium carbonate
    • flow-chemistry
    • nanoceramics
    • biomaterials
    • microfluidics

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