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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Effects of Nano-sized Calcium Carbonate on Physical and Optical Properties of Paper

나노사이즈 탄산칼슘이 종이의 물리·광학적 특성에 미치는 영향

  • Park, Jung-Yoon (Dept. of Forest products and biotechnology, College of Forest Science, Kookmin University) ;
  • Lee, Tai-Ju (Dept. of Forest products and biotechnology, College of Forest Science, Kookmin University) ;
  • Kim, Hyoung-Jin (Dept. of Forest products and biotechnology, College of Forest Science, Kookmin University)
  • 박정윤 (국민대학교 삼림과학대학 임산생명공학과) ;
  • 이태주 (국민대학교 삼림과학대학 임산생명공학과) ;
  • 김형진 (국민대학교 삼림과학대학 임산생명공학과)
  • Received : 2014.06.20
  • Accepted : 2014.08.07
  • Published : 2014.08.30
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Abstract

In papermaking industry, inorganic fillers are widely used for the purpose of improving opacity, brightness, printability, uniformity and dimensional stability. They are also useful for production costs and energy savings. In the past, inorganic fillers in papermaking industry only focused on micro-scale but recently, new trials on nano-powdered technology are applying. Even nano-powdered fillers are rapidly utilized for improving the optical and surface properties in coating and surface sizing, there still have some problems in wet-end process due to poor dispersibility and retention. In this study, nano-particled calcium carbonate was produced by milling the PCC and its applicability between micro sized and nano sized calcium carbonated was compared in wet-end process, and finally the sheet properties were evaluated. Nano-PCC was not retained in sheet structure without applying retention system, but with retention system nano-powdered PCC was absorbed on fiber surface with expanding the fiber networks. The application of PAM-bentonite system has resulted in high ash retention and bulky structure for copier paper, and good optical properties in brightness and opacity. However, it required to solve the weakness of low tensile property due to interruption of hydrogen bonding by nano fillers.

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References

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