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Merck

Stabilization of amorphous calcium carbonate by controlling its particle size.

Nanoscale (2010-09-14)
Fabio Nudelman, Ela Sonmezler, Paul H H Bomans, Gijsbertus de With, Nico A J M Sommerdijk
要旨

Amorphous calcium carbonate (ACC) nanoparticles of different size are prepared using a flow system. Post-synthesis stabilization with a layer of poly[(α,β)-dl-aspartic acid] leads to stabilization of the ACC, but only for particles <100 nm. Larger and uncoated particles readily convert into the crystalline forms of CaCO₃. This shows that ACC is intrinsically stable below 100 nm.

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Sigma-Aldrich
ポリ-(α,β)-DL-アスパラギン酸 ナトリウム塩, mol wt 2,000-11,000