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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Application of in-situ CaCO3 forming process on recycled fibers for optical property improvement

고지의 광학적특성 개선을 위한 in-situ 탄산칼슘처리기술의 적용

  • Received : 2012.06.26
  • Accepted : 2012.07.20
  • Published : 2012.08.30
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Abstract

Optical property improvements for ONP (old newspaper) and OMG (old magazine) were attempted by application of in-situ $CaCO_3$ formation process on recycled fiber surfaces. Washing treatment of ONP and OMG resulted in 35~40% yield loss for around 6% brightness improvement. Washing plus bleaching process with $H_2O_2$ and FAS (formamidine sulfinic acid) improved brightness and ERIC values a little more with the same amount of yield loss as washing treatment. In-situ $CaCO_3$ formation method improved those optical properties much better than the washing plus bleaching method without loss of yield, and better than the case of adding high brightness PCC up to the same ash level. It can be said that the in-situ $CaCO_3$ formation method may be used as an effective alternative for upgrading optical properties of recycled fibers.

Keywords

References

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Cited by

  1. Optical Characteristics of Eco-friendly In-situ Recycled Paper with Limestone as Filler vol.51, pp.2, 2014, https://doi.org/10.4191/kcers.2014.51.2.132
  2. 탄산칼슘 in-situ precipitation 처리된 신문고지의 형태와 물성변화 vol.45, pp.6, 2012, https://doi.org/10.7584/ktappi.2013.45.6.044
  3. 고지의 효과적인 활용을 위한 in-situ 탄산칼슘 부착방식의 연구 (1) - 탄산칼슘의 부착 효과 증대를 위한 고분자 전처리 - vol.46, pp.5, 2012, https://doi.org/10.7584/ktappi.2014.46.5.019
  4. 고지의 효과적인 활용을 위한 in-situ 탄산칼슘 부착방식의 연구(2) - 탄산칼슘 첨가방식과 비교 및 반응온도에 따른 변화 - vol.46, pp.5, 2012, https://doi.org/10.7584/ktappi.2014.46.5.027