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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Formation of Hydrophobic Self-assembled Monolayers on Paper Surface with Silanes

실란화 반응에 의한 종이 표면의 소수성 자기조립 단분자막 형성

  • Oh, Min-Jeong (Division of Environmental Science and Ecological Engineering,College of Life Science and Biotechnology, Korea University) ;
  • Lee, Hyoung (Technology and Environment Team, Hansol Paper, Ltd.) ;
  • Paik, Ki-Hyon (Division of Environmental Science and Ecological Engineering,College of Life Science and Biotechnology, Korea University)
  • 오민정 (고려대학교 생명과학대학 환경생태공학부) ;
  • 이형 (한솔제지(주) 기술환경팀) ;
  • 백기현 (고려대학교 생명과학대학 환경생태공학부)
  • Received : 2010.02.05
  • Accepted : 2010.03.19
  • Published : 2010.03.30
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Abstract

This study was conducted to modify the surface properties of papers by formation of hydrophobic self-assembled monolayer(SAM) on paper surface with silanes. A base paper I(0.5% AKD) and base paper II(1.0-1.5% AKD) were reacted with silanes(PFDTES, DMDCS, MODDCS) by immersion method and vapor deposition method. Hydrophobic SAMs(contact angle value>$120^{\circ}C$) were obtained on all papers after treatment with $10^{\mu}l$ PFDTES for 15min, with $50^{\mu}l$ DMDCS for 30min, with $50^{\mu}l$ MODDCS for 300min. When applying PFDTES to paper surface, lower silane concentration and shorter reaction time were required, whereas MODDCS with long alkyl chain required the longest reaction time of 300min. The st$\ddot{o}$ckight sizing degree of silane treated papers were increased between 105sec(base paper I) and 130sec(base paper II). The wet tensile strength of PFDTES-treated base papers(I, II) increased by 10-34% after SAM formation. However, the wet tensile strength of the DMDCS-treated base paper(I) was found to decrease from 0.067kN/m to 0.038kN/m; this may due to the cellulose degrading as a result of generated hydrogen chloride when hydroxyl group of cellulose were reacted with DMDCS. No apparent changes of PPS roughness on silane-treated papers are observed. The ATR-IR spectrum showed absorption peak located at 465 and 1200cm-1 which can be assigned to the Si-O-C asymmetric stretching and Si-O-C bonds, respectively.

Keywords

References

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