Journal of Ceramic Processing Research

Ceramic Processing Research Center (한양대학교 세라믹연구소)
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Tailoring the microstructure of $Al_2O_3-SiO_2$ wet foams to porous ceramics

  • Pokhrel, Ashish (Institute of Processing and Application of Inorganic Materials (IPAIM) Department of Materials Science and Engineering, Hanseo University) ;
  • Park, Jung Gyu (Institute of Processing and Application of Inorganic Materials (IPAIM) Department of Materials Science and Engineering, Hanseo University) ;
  • Park, Sun Min (Korea Institute of Ceramic Engineering and Technology(KICET)) ;
  • Kim, Ik Jin (Institute of Processing and Application of Inorganic Materials (IPAIM) Department of Materials Science and Engineering, Hanseo University)
  • Published : 2013.08.01
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Abstract

$Al_2O_3$ particles, which are in situ hydrophobized upon adsorption of short-chain amphiphilic molecules, on addition of different amounts of unmodified $SiO_2$, can be used as wet foam stabilizers. We tailored the microstructure of particle stabilized wet foams, average bubble size, and bubble size distribution by changing the composition of the initial colloidal suspension. The effects in terms of the combined effects of the contact angle, surface tension, and $SiO_2$ content of the initial suspensions, are directly affected by the amphiphile concentration. Wet foams featuring average bubble sizes between 30 and $300{\mu}m$ and air contents between 50-90% and porosity between 60-80% were obtained by adjusting the propyl gallate concentration as well as amount of additive ($SiO_2$) in the initial suspension.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

References

  1. A.R. Studart, U.T. Gonzenbach, E. Tervoort, and L.J. Gauckler, a Review-J. Am. Ceram. Society (2006).
  2. U.T. Gonzenbach, A.R. Studart, D. Steinlin, E. Tervoort, and L.J. Gauckler, J. Am. Ceram. Soc. 90 [11] (2007) 3407-14. https://doi.org/10.1111/j.1551-2916.2007.01907.x
  3. B.P. Binks, Curr. Opin. In Colloid Interface Science 7 (2002) 21-41. https://doi.org/10.1016/S1359-0294(02)00008-0
  4. B.S. Murray, Curr. Opin in Colloid Interface Science 12 (2007) 231-241.
  5. U.T. Gonzenabach, A.R Studart, E. Tervoort and L.J. Gauckler, Langmuir (2006) 10983-10988.
  6. T.N. Hunter, R.J. Pugh, G.V. Fanks, G.J. Jameson, Adv. Collid and Inter. Sci.137 (2008) 57-81. https://doi.org/10.1016/j.cis.2007.07.007
  7. U.T. Gonzenbach, A.R. Studart, E. Tervoort, and L.J. Gauckler, Langmuir. 23 [3] (2007) 1025-32. https://doi.org/10.1021/la0624844
  8. A. R.Studart, U.T. Gonzenbach, I. Akartuna, E. Tervoort, and L.J. Gauckler, J. Mater. Chem. (2007) 3283-89.
  9. T.S. Horozov, Curr. Opin. In Colloid Interface Science. 13 (2008) 134-40. https://doi.org/10.1016/j.cocis.2007.11.009
  10. N.D. Denkov, I.B. Ivanov, P.A. Kralchevsky, D.T. Wasan, J. of Collid. Inter. Sci.150 [2] (1992) 589-93. https://doi.org/10.1016/0021-9797(92)90228-E
  11. B. Neirinck, J. Fransaer, O.V. der Biest, J. Vleugels, J. Euro. Cerm. Soc. 29 (2009) 833-36. https://doi.org/10.1016/j.jeurceramsoc.2008.07.009
  12. U.T. Gonzenabach, A.R Studart, E. Tervoort and L.J. Gauckler, Angew. Chem. Int. Ed. 45 (2006) 3526-30. https://doi.org/10.1002/anie.200503676
  13. A. Pokhrel, J.G. Park, J.S. Nam, D.S. Cheong and I.J. Kim, J. of Kor. Cerm. Soc. 48 [5] (2011) 463-466. https://doi.org/10.4191/kcers.2011.48.5.463
  14. U.T. Gonzenbach, A.R. Studart, E. Tervoort, and L.J. Gauckler, J. Am. Ceram. Soc. 90 [1] (2007) 19-22.
  15. T. Fukasawa and M. Ando, J. Am. Ceram. Soc. 84 [1] (2001) 230-32. https://doi.org/10.1111/j.1151-2916.2001.tb00638.x
  16. T. Fukasawa, Z.Y. Deng, M. Ando, T. Ohji, Y. Goto, J. Materials Science 36 (2001) 2523-2527. https://doi.org/10.1023/A:1017946518955
  17. I. Akartuna, A.R. Studart, E. Tervoot, and L.J. Gauckler, Adv. Material 20 (2008) 4714-4718. https://doi.org/10.1002/adma.200801888
  18. I. Akartuna, A.R. Studart, E. Tervoot, U.T. Gonzenbach, and L.J. Gauckler, Langmuir. 24 [7] (2008) 161-7168.
  19. A. Pokhrel, J.G. Park, G.H. Jho, J.Y. Kim, and I.J. Kim, J. Korean Ceram. Society 48 [6] (2011) 600-603. https://doi.org/10.4191/kcers.2011.48.6.600
  20. A. Pokhrel, J.G. Park, W. Zhao, and I. J. Kim, Journal of Ceramic Processing and Research. 13 [4] (2012) 420-424.