Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Characterization of Organo-modified Montmorillonite by Ion-exchange Method

유기물로 수식된 몬트모릴로나이트 제조 및 특성조사

  • Kim, Jae-Myung (Material Team, Whiteware.Structural Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Yoo, Jung-Whan (Material Team, Whiteware.Structural Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Choi, Eui-Seok (Material Team, Whiteware.Structural Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Sung-Min (Material Team, Whiteware.Structural Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Hyung-Tae (Material Team, Whiteware.Structural Ceramics Center, Korea Institute of Ceramic Engineering and Technology)
  • 김재명 (요업기술원 도자.구조세라믹본부 소재팀) ;
  • 유중환 (요업기술원 도자.구조세라믹본부 소재팀) ;
  • 최의석 (요업기술원 도자.구조세라믹본부 소재팀) ;
  • 이성민 (요업기술원 도자.구조세라믹본부 소재팀) ;
  • 김형태 (요업기술원 도자.구조세라믹본부 소재팀)
  • Published : 2004.01.01
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Abstract

Hydrophilicity and hydrophobicity of pottery bodies can be controlled via chemical substitution of layered clay with hydrophilic and hydrophobic organics. In this study, organo-clay nanocomposites were prepared by ion-exchange of montmorillonite with dodecylamine and hexadecylamine, respectively. Substitution sites of organics and the interval changes of layered materials are characterized by FT-IR and WAXD and organics amounts loaded and water comtents contained by C/S analysis and TG-DSC. The organics were selectively intercalated so that increase layer interval from 12${\AA}\; to\;16{\AA}$. Organo-modified clay is changed to more hydrophobic comparing to clay itself.

층상구조를 갖는 점토광물은 층상의 이온교환자리에 친소수성 유기물을 화학적으로 치환할 수 있어 도자기 소지의 친소수성 정도를 조절할 수 있다. 본 연구에서는 Montmorillonite를 이온교환법으로 dodecylamine, hexadecylamine과 반응시켜 유기물이 점토광물에 복합화된 유기-점토 복합체를 조조하였다. 유기물이 점토광물 구조에 치환된 위치 및 층상구조의 간격변화는 FT-IR과 WAXD로, 수식된 유기물의 양은 TG-DSC, C/S 기기를 사용하여 조사하였다. 분석을 통하여 유기물은 층상에 선택적으로 치환하여 층간격을 증가 (12${\AA}{\leftrightarro}16{\AA}$) 시키는 역할을 하였고, 비교적 친수성을 보이는 MMT가 첨가된 가소제로 인하여 소수성으로 변하고 있음을 발견하였다.

Keywords

References

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