Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Surface Characterization of Hydrophobically Modified MCC Using Inverse Gas Chromatography

인버스 가스 크로마토 그래피를 이용한 소수화된 MCC의 표면 특성 분석

  • Lee, Hak-Rae (Department of Forest Products, College of Agricultural and Life Sciences, Seoul National University) ;
  • Lee, Yong-Min (Department of Forest Products, College of Agricultural and Life Sciences, Seoul National University) ;
  • Park, Il (Department of Forest Products, College of Agricultural and Life Sciences, Seoul National University) ;
  • Lee, Jin-Hee (Department of Forest Products, College of Agricultural and Life Sciences, Seoul National University) ;
  • Cho, Joong-Yeon (Department of Paper Technology) ;
  • Han, Sin-Ho (Dept. of Chemical Engineering, Korea Polytechnic University)
  • 이학래 (서울대학교 농업생명과학대학 임산공학과) ;
  • 이용민 (서울대학교 농업생명과학대학 임산공학과) ;
  • 박일 (서울대학교 농업생명과학대학 임산공학과) ;
  • 이진희 (서울대학교 농업생명과학대학 임산공학과) ;
  • 조중연 (용인송담대학 제지.패키징시스템과) ;
  • 한신호 (한국산업기술대학 화학공학과)
  • Published : 2002.10.01
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Abstract

The adsorption characteristics and surface energetics of hydrophobically modified MCC have been investigated by the inverse gas chromatography technique at infinite dilution. The thermodynamic parameters of adsorption, ΔG, ΔH and ΔS, for n-alkanes were determined at infinite dilution. Heats of adsoption of the n-alkanes increased as the level of hydrophobic modification increased. The hydrophobically modified MCC also showed greater entropy of adsorption indicating restricted mobility of the adsorbed n-alkanes. The acid/base characteristics of the MCC were evaluated using polar probes. As the hydrophobicity of MCC increased, the basisity of the MCC decreased.

Keywords

References

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