Abstract
Vaterite was synthesized in the emulsion state at 50 ‡C. The mixing method was found to have a significant effect on the shape of vaterite. In order to investigate the effect of CaCO3 morphology on mechanical property and thermal property of polypropylene, cubic forms of calcite and needle forms of aragonite were also prepared in the emulsion states. When vaterite was used as a filler in the PP/CaCO3 composites, the crystallization temperature and crystallinity were higher than those with other forms. In addition, the size of spherullite of polypropylene was the finest when vaterite was used. Therefore, the vaterite is considered as a proper nucleating agent for polypropylene.
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References
Aglaia, G., Xyla, Petros, G. and Koutsoukos, “Quantitative Analysis of Calcium Carbonate Polymorphs by Infrared Spectroscopy,”J. Chem. Soc, Faraday Trans., 1,85, 3165 (1989).
Andersen, F. A. and Brecevic, L., “Infrared Spectra of Amorphous and Crystalline Calcium Carbonate,”Acta Chemica Scandinavica,45, 1018(1991).
Hakanen, E. and Koskikallio, J., “Analysis of Aragonite and Calcite in Precipitated Calcium Carbonate by X-ray Diffraction and Infrared Spectroscopic Methods,”Finn. Chem. Lett., 34 (1982).
Kojima, Y., Endo, N., Yasue, T. and Arai, Y., “Morphological Controls of Calcium Carbonate Hexahydrate and its Dehydrating Substance,”J. Ceram. Soc. Japan,103, 1282 (1995).
Kojima, Y, Sadotomo, A., Yasue, T. and Arai, Y., “Control of Crystal Shape and Modification of Calcium Carbonate Prepared by Precipitation from Calcium Hydrogencarbonate Solution,”J. Ceram. Soc. Japan,100, 1145 (1992).
Kowalewski, T. and Galeski, A., “Influence of Chalk and its Surface Treatment on Crystallization of Filled Polypropylene,”J. Appl. Polym. Sci.,32, 2919 (1986).
Kralj, D. and Brecevic, L., “Vaterite Growth and Dissolution in Aqueous Solution 1. Kinetics of Crystal Growth,”J. of Crystal Growth,104, 793 (1990).
Lyu, S. G., Kim, H. Y and Sur, G. S., “Effect of the Amounts of Calcium Carbonate Encapsulated by Polystyrene through Insitu Emulsion Polymerization on the Thermal Properties of the Resulting Polystyrene,”Polymer(Korea),20, 769 (1996).
Lyu, S. G., Park, Y H. and Sur, G. S., “Thermal and Mechanical Properties of Hydrophobic Calcium Carbonate/Low Density Polyethylene Composites,”Polymer(Korea),21, 296 (1997).
Lyu, S. G., Ryu, S. O., Park, Y H. and Sur, G. S., “The Preparation of Spherical Vaterite in the Presence of NH4C1 by Carbonation Process,”HWAHAK KONGHAK,36, 262 (1998).
Lyu, S. G., Sur, G. S. and Kang, S. H., “A Study of Crystal Shape of the Precipitated Calcium Carbonate Formed in the Emulsion State,”HWAHAK KONGHAK,35, 186 (1997).
Lyu, S. G. and Sur, G. S., “The Synthesis of Precipitated Calcium Carbonate and Suspension Polymerization of Styrene in the Presences of Calcium Carbonate,”PolymeriKored),20, 870 (1996).
Nakamae, K., Nishiyama, S., Tahara, S., Fujimura, Y, Yamashiro, J., Urano, A. and Matsumoto, T., “Stabilization and Atomization of Vaterite Synthesized in Methanol,”Nihon-settyakukyoukaishi,22, 573 (1986).
Wray, J. L. and Daniels, F., “Precipitation of Calcite and Aragonite,”J. Am. Chem. Soc.,79, 2031 (1957).
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Lyu, S.G., Park, S. & Sur, G.S. The synthesis of vaterite and physical properties of PP/CaCO3 composites. Korean J. Chem. Eng. 16, 538–542 (1999). https://doi.org/10.1007/BF02698281
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DOI: https://doi.org/10.1007/BF02698281