Boulos Ramiz A, Zhang Fei, Tjandra Edwin S, Martin Adam D, Spagnoli Dino, Raston Colin L
Centre for NanoScale Science and Technology, School of Chemical and Physical Sciences, Flinders University, Bedford Park, SA 5042 Australia.
1] Centre for NanoScale Science and Technology, School of Chemical and Physical Sciences, Flinders University, Bedford Park, SA 5042 Australia [2] Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Sci Rep. 2014 Jan 22;4:3616. doi: 10.1038/srep03616.
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.
控制碳酸钙多晶型物的生长对于理解海洋环境条件的变化至关重要。文石是海洋生物内壳中的主要多晶型物，并且可以很容易地转化为方解石，方解石是碳酸钙最稳定的多晶型物。这两种多晶型物都比方解石更稳定，球霰石是碳酸钙的另一种天然存在的多晶型物，这反映在其在自然界中的分布有限。我们使用涡旋流体装置（VFD）研究了高剪切力对碳酸钙相行为的影响，并改变实验参数以探索碳酸钙矿化。倾斜角度、转速和温度的变化可以控制所得碳酸钙的尺寸、形状和相。
