Spinning up the polymorphs of calcium carbonate

被引：0
作者：
Ramiz A. Boulos
Fei Zhang
Edwin S. Tjandra
Adam D. Martin
Dino Spagnoli
Colin L. Raston
机构：
[1] School of Chemical and Physical Sciences,Centre for NanoScale Science and Technology
[2] Flinders University,Department of Polymer Science and Engineering
[3] School of Chemistry and Chemical Engineering,School of Chemistry and Biochemistry
[4] Shanghai Jiao Tong University,Department of Chemistry
[5] The University of Western Australia,undefined
[6] The University of New South Wales,undefined
来源：
Scientific Reports | / 4卷
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摘要：
Controlling the growth of the polymorphs of calcium carbonate is important in understanding the changing environmental conditions in the oceans. Aragonite is the main polymorph in the inner shells of marine organisms and can be readily converted to calcite, which is the most stable polymorph of calcium carbonate. Both of these polymorphs are significantly more stable than vaterite, which is the other naturally occurring polymorph of calcium carbonate and this is reflected in its limited distribution in nature. We have investigated the effect of high shear forces on the phase behaviour of calcium carbonate using a vortex fluidic device (VFD), with experimental parameters varied to explore calcium carbonate mineralisation. Variation of tilt angle, rotation speed and temperature allow for control over the size, shape and phase of the resulting calcium carbonate.
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