کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
239126 | 465798 | 2007 | 6 صفحه PDF | دانلود رایگان |
The kinetics of calcite particles formation in the presence of soluble polyvinyl-alcohol matrix was investigated by the constant composition method. The presence of the above-mentioned polymer, induces the precipitation of this calcium carbonate polymorph at room temperature possibly through the –OH moieties. The apparent order for the crystallization process was found to be 2.25 ± 0.16 indicative of a surface nucleation mechanism. The number of ions forming the 3D critical nucleus was found to be p = 9. The surface energy of the growing phase was 28 mJ m− 2 relatively small because of imperfections, in the form of vacant sites.
The kinetics of calcite particles formation in the presence of polyvinyl-alcohol water soluble polymer matrix was investigated by the constant composition method. The presence of the above-mentioned, polymer matrix induce this calcium carbonate polymorph at room temperature possibly through the –OH moieties. The apparent order for the crystallization process was found to be 2.25 ± 0.16 indicative of a surface nucleation mechanism. The number of ions forming the 3D critical nucleus was found to be p = 9. The surface energy of the growing phase was 28 mJ m− 2 relatively small because of imperfections in the form of vacant site.Figure optionsDownload as PowerPoint slide
Journal: Powder Technology - Volume 177, Issue 2, 15 August 2007, Pages 71–76