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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Changes in the Properties of Cotton Cellulose by Hydrogen Peroxide Bleaching

과산화수소 표백조건에 따른 면셀룰로오스의 특성 변화

  • Heo, Yong-Dae (Korea Minting, Security Printing & ID Card Operation Corporation, Technology Research Institute) ;
  • Sung, Yong Joo (Dept. of Biobased Materials, Chungnam National University) ;
  • Joung, Yang-Jin (Korea Minting, Security Printing & ID Card Operation Corporation, Technology Research Institute) ;
  • Kim, Duk-Ki (Korea Minting, Security Printing & ID Card Operation Corporation, Technology Research Institute) ;
  • Kim, Tae-Young (Korea Minting, Security Printing & ID Card Operation Corporation, Technology Research Institute)
  • 허용대 (한국조폐공사 기술연구원) ;
  • 성용주 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 정양진 (한국조폐공사 기술연구원) ;
  • 김덕기 (한국조폐공사 기술연구원) ;
  • 김태영 (한국조폐공사 기술연구원)
  • Received : 2013.06.03
  • Accepted : 2013.06.20
  • Published : 2013.06.30
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Abstract

The cotton contains various impurities such as protein, wax, pectins, coloring matter, even though cotton has been a major source of pure cellulose. The purification processes have been commonly applied to obtain the pure cellulose. However the excessive purification treatments could lead to the damage in the cellulose structure which could result in the degradation of cellulose and the limited application of cotton cellulose. In this study, the changes in cellulose structural properties such as crystallinity and DP(degree of polymerization) by the various conditions of the purification processes were investigated. The less toxic agents such as hydrogen peroxide and sodium silicate were applied for the purification treatment in this study. The increase in the process times, the temperature and the applied amount of chemical agents resulted in the more purified cellulose. The DP of cotton cellulose was increased at the first weak conditions by the reduction of small molecules such as pectin, wax, and so on. Especially the 2 % addition amount of $H_2O_2$ with $Na_2SiO_3$ resulted in the higher value in the DP and the brightness compared to the 1.5 % addition amount of $H_2O_2$. However, the 4 % addition amount of $H_2O_2$ with $Na_2SiO_3$ showed the decreased value because of excessive treatment. In case of the changes in the crystallinity (Gjk), the highest value of the crystallinity was obtained by the 2% addition amount of $H_2O_2$ on the cotton cellulose, which showed similar with the change in the DP.

Keywords

References

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