Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1792939 | Journal of Crystal Growth | 2010 | 6 Pages |
Abstract
In this paper, the stack-like crystallization of calcium carbonate in the presence of hen eggwhite under direct drying and vacuum freeze drying was investigated, and marked morphological changes in the calcium carbonate particles were observed depending on the reaction condition used. Scanning electron microscopy (SEM), Powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Transmission electron microscopy (TEM), and Nano Mechanical Tester were employed to characterize the samples. Results indicate that gelling eggwhite-mediated the formation of the “stack-like” layered calcium carbonate aggregates composed of considerable nanosheets under direct drying while only rhombohedra calcite crystal (1Â 0Â 4) was formed without any additives. An analogous structure to the brick-and-mortar arrangement was attainted by vacuum freeze drying. The average elastic modulus and the hardness of “stack-like” calcium carbonate hybrid material were assessed 0.9952 and 0.0415Â GPa with Nano-indenter test, respectively.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Yanli Hu, Yongjun Ma, Yong Zhou, Fude Nie, Xiaohui Duan, Chonghua Pei,