Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지

Polymorphism of Calcium Carbonate Crystal by Silk Digested Amino Acid

실크 분해 아미노산에 의한 탄산칼슘 결정의 polymorphism

  • Kim, Jin-Ho (Department of Chemical Engineering, Chungnam National University) ;
  • Kim, Jong Min (Department of Chemical Engineering, Dong A University) ;
  • Kim, Woo Sik (School of Environment and Applied Chemistry, Kyunghee University) ;
  • Kim, In Ho (Department of Chemical Engineering, Chungnam National University)
  • 김진호 (충남대학교, 화학공학과) ;
  • 김종민 (동아대학교 화학공학과) ;
  • 김우식 (경희대학교 환경응용화학대학) ;
  • 김인호 (충남대학교, 화학공학과)
  • Received : 2008.06.19
  • Accepted : 2008.08.11
  • Published : 2008.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Crystallization of calcium carbonate was performed by using aqueous calcium chloride and sodium carbonate for operational simplicity. Reaction time, solute concentrations, pH, and organic additive were varied to get calcium carbonate crystals. Silk fibroin was used as the additive to understand the change of morphology of calcium carbonate crystal. The crystals were analyzed by FE-SEM, XRD, and FT-IR. Reaction time, and pH mainly affected the morphology of crystals. Besides, it was found that silk fibroin inhibited the formation of vaterite and promoted the calcite forms.

침강성 탄산칼슘의 제조를 위해 액체-액체 상태에서의 결정화 실험을 실행하였다. 탄산칼슘 결정을 만들기 위한 방법 중 조작이 간단하며 다양한 탄산칼슘 결정을 얻을 수 있는 염화칼슘과 탄산나트륨의 반응법을 선택하였다. 반응 시간, 용질의 농도, pH, 유기 첨가제를 변경하여 탄산칼슘을 합성하였다. 유기 성분을 가진 탄산칼슘을 합성하기 위해 아미노산이 복합되어 있는 silk fibroin을 첨가하였고, silk fibroin이 탄산칼슘의 결정화에 미치는 영향에 대해 초점을 맞추어 실험을 수행하였다. 여러 탄산칼슘 결정을 분석하기 위해 FE-SEM, XRD, 그리고 FT-IR을 사용하였다. 반응 시간, pH가 탄산칼슘 결정 형태에 큰 영향을 줌을 관찰하였다. Silk fibroin이 결정형태 vaterite의 형성을 저해하고 calcite의 형성에 효율적인 첨가제로 작용하는 것을 발견하였다.

Keywords

References

  1. Tai, C. Y. and Chen, F. B., 'Polymorphism of $CaCO_3$ Precipitated in a Constant Composition Environment,' AIChE J., 44, 1790-1798(1998) https://doi.org/10.1002/aic.690440810
  2. Ko, S. J., Park, W. K., Lee, S. W., Han, C. and Ahn, J. W., 'Control of Particle Size and Aspect Ratio of Aragonite Precipitated Calcium Carbonate on Adding Seed,' KSGE, 44(2), 153-158(2007)
  3. Kim, W. S., Izumi, H. and Kim, W. S., 'Polymorphic Change of Calcium Carbonate During Reaction Crystallization in a Batch Reactor,' Ind. Eng. Chem. Res., 43, 2650-2657(2004) https://doi.org/10.1021/ie034161y
  4. 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(2), 186-191(1997)
  5. Hao, W., Qiang, S., Haihua, W., Yanyan, G., Ying, Z., Xu D. and Wang, D., 'Influence of Segmented Copolymers on the Crystallization and Aggregation of Calcium Carbonate,' J. Cryst. Growth, 303, 537-545(2007) https://doi.org/10.1016/j.jcrysgro.2006.12.078
  6. Jun, K., Norimasa, S., Masao, K., Keiji, S. and Nobuyuki, A., 'Formation Process of Calcium Carbonate from Highly Supersaturated Solution,' J. Cryst. Growth, 237-239, 419-423(2002) https://doi.org/10.1016/S0022-0248(01)01866-8
  7. Sawada, K., 'The Mechanisms of Crystallization and Transformation of Calcium Carbonates,' Pure Appl. Chem., 69, 921-928(1997) https://doi.org/10.1351/pac199769050921
  8. Han, Y. S., Gunawan, H., Masayoshi, F. and Minoru, T., 'Crystallization and Transformation of Vaterite at Controlled pH,' J. Cryst. Growth, 289, 269-274(2006) https://doi.org/10.1016/j.jcrysgro.2005.11.011
  9. Gu, C. H., Victor, Y. J. R. and David, J. W. Grant., 'Polymorph Screening: Influence of Solvents on the Rate of Solvent-mediated Polymorphic Transformation,' J. Pharm. Sci., 90(11), 1878-1890(2001) https://doi.org/10.1002/jps.1137
  10. Zhenguang, Y., Zi, F., Zhuojun, M., Jinye, D., Shuo, L. X. and Rongqing, Z., 'Biomineralization: Functions of Calmodulin-like Protein in the Shell Formation of Pearl Oyster,' Biochim. Biophys. Acta., 1770, 1338-1344(2007) https://doi.org/10.1016/j.bbagen.2007.06.018
  11. Lee, S. C., Kim, K. J., Kim, C. W., Lee, H. J. and Choi, H. W., 'Biomineralization for Functional Hybrid Materials,' PPST, 17(6) (2006)
  12. Kanakis, J. and Dalas, E., 'The Crystallization of Vaterite on Fibrin,' J. Cryst. Growth, 219, 277-282(2000) https://doi.org/10.1016/S0022-0248(00)00623-0