Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Microwave Synthesis of Alumina Nanoparticles by Polymer Gel Method from Kaolin

카올린으로부터 고분자 젤법에 의한 알루미나 나노입자의 마이크로파 합성

  • 박성수 (부경대학교 응용화학공학부) ;
  • 황채호 (부경대학교 응용화학공학부) ;
  • 김지경 (부산대학교 재료공학부) ;
  • 김동현 (부산대학교 재료공학부) ;
  • 이상근 (부산대학교 재료공학부) ;
  • 박희찬 (부산대학교 재료공학부)
  • Published : 2004.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

Hexagonal sheet typed $\alpha$-Al$_2$O$_3$ nano particles were synthesized successfully at various conditions with the aluminum sulfate solution extracted from kaolin through the conventional and microwave assisted polyacrylamide (PAA) gel methods. Shorter gel time and higher yield were obtained in the microwave assisted PAA gel method, compared to conventional method. the size of nano particles was not changed by increasing the concentration of aluminum sulfate, but decreased with increasing the concentration of cross-linking agent in both the conventional and microwave samples. Above 0.01M concentration of cross-linking agent, the sizes of nano particles in the microwave samples were relatively larger than those in the conventional samples.

본 연구에서는 재래식 및 마이크로파 polyacrylamide(PAA) 겔법을 사용하여 카올린에서 추출된 황산 알루미늄 수용액으로부터 육각 판상형의 $\alpha$-Al$_2$O$_3$ 나노 입자들을 성공적으로 합성하였다. 재래식 PAA 겔법에 비하여 마이크로파 PAA 겔 법에서는 상대적으로 겔화 시간은 짧으며, 합성수율은 상대적으로 높았다. 재래식 및 마이크로파 시료들에서 황산 알루미늄의 농도 변화에 따라 나노 입자들의 크기는 거의 변하지 않지만, 가교제의 농도가 증가함에 따라 나노 입자들의 크기는 작아졌다. 가교제의 농도가 0.01M 이상인 조건에서는 재래식 시료들에 비하여 마이크로파 시료들에서 나노 입자들의 크기는 상대적으로 컸다.

Keywords

References

  1. A. C. Metaxas and R. J. Meredith, 'Industrial Microwave Heating,' pp. 296-305, Peter Peregrinus Ltd., United Kingdom, 1993
  2. W. H. Sutton, 'Microwave Processing of Ceramic Materials,' Am. Ceram. Soc. Bull., 68 376-86 (1989) https://doi.org/10.1111/j.1151-2916.1985.tb10146.x
  3. S.Caddick, 'Microwave Assisted Organic Reactions,' Tetrahedron, 51 10402-03 (1995)
  4. H. M. Kingston and S. J. Haswell, 'Microwave Enhanced Chemistry,' pp. 455-64, Am. Chern. Soc., Washington DC, 1997
  5. K. D. Raner, C. R. Strauss, and R. W. Trainor,'A New Microwave Reactor for Batchwise Organic Synthesis,' J. Org. Chem., 60 2456-60 (1995) https://doi.org/10.1021/jo00113a028
  6. C. R. Strauss and R. W. Trainor, 'Developments in Microwave- Assisted Organic Chemistry,' Aust. J. Chem., 48 1665-69 (1995) https://doi.org/10.1071/CH9951665
  7. L. Perreux and A. Loupy, 'A Tentative Rationalization of Microwave Effects in Organic Synthesis according to the Reaction Medium, and Mechanistic Consideration,' Tetrahedron, 57 9199-223 (2001) https://doi.org/10.1016/S0040-4020(01)00905-X
  8. H. Z. Wang, L. Gao, L. H. Gui, and J. K. Guo, 'Preparation and Properties of Intragranular Al2O 3-SiC Nanocomposites,' Nanostruct. Mater., 10 947-53 (1998) https://doi.org/10.1016/S0965-9773(98)00132-9
  9. C. Kaya, T. Y. He, X. Gu, and E. G. Butler, 'Nanostructured Ceramic Powder by Hydrothermal Synthesis and their Application,' Mieroporous & Mesoporous Mater., 54 37-49 (2002) https://doi.org/10.1016/S1387-1811(02)00334-7
  10. R. Vaen and D. Stover, 'Processing and Properties of Nanophase Ceramics,' J. Mater. Proc. Tech., 92-93 77-84 (1999) https://doi.org/10.1016/S0924-0136(99)00218-6
  11. D. Hreniak and W. Strek, 'Synthesis and Optical Properties of $Nd^3^+$ -Doped $Y_3Al_5O_12$ Nanoceramics,' J. Alloy & Camp., 341 183-86 (2002) https://doi.org/10.1016/S0925-8388(02)00067-1
  12. A. Douy and P. Odier, 'The Polyacrylamide Gel: A Novel Route to Ceramic and Glassy Oxide Powders,' Mater. Res. Bull., 24 1119-26 (1989) https://doi.org/10.1016/0025-5408(89)90069-X
  13. Q. Li, L. Gao, and D. Yan,'The Crystal Structure and Spectra of Nano-Scale YAG : $Ge^3^+$ ,' Mater. Chem. & Phys., 64 41-4 (2000) https://doi.org/10.1016/S0254-0584(99)00250-3
  14. S. S. Park, E. H. Hwang, B. C. Kim, and H. C. Park, 'Synthesis of Hydrated A1urriimim Sulfate from Kaolin by Microwave Extraction,' J.' Am. Ceram. Soc., 83 1341-45 (2000) https://doi.org/10.1111/j.1151-2916.2000.tb01390.x
  15. S. S. Park, K. S. Jung, B. W. Kim, S. E. Lee, and H. C. Park, 'The Synthesis and Characterization of Beta Alumina Powder by Microwave Extraction and Calcination Method' J. Kor. Ceram. Soc., 38 [8] 749-54 (2001)
  16. H. C. Park, J. H. Park, B. W. Kim, S. E. Lee, J. H. Kim, and S. S. Park, 'A Study for the Synthesis and Characterization of \{\gamma}-Alumina Powder by Ultrasonic Irradiation,' J. kor. Ceram. Soc., 38 921-27 (2001)
  17. S. W. Kim, S. H. Lee, J. H. Park, J. H. Kim, S. S. Park, and H. C. Park, 'Characteristics of Alumina Particles Synthesized by Microwave Heating' J. Kor. Ceram. Soc., 39 1007-10 (2002) https://doi.org/10.4191/KCERS.2002.39.10.1007