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Application of In-situ CaCO3 Formation Method for Better Utilization of Recycled Fibers (1) - Enhancing Attachment of CaCO3 to Fibers by Polymer Pre-Treatment -

고지의 효과적인 활용을 위한 in-situ 탄산칼슘 부착방식의 연구 (1) - 탄산칼슘의 부착 효과 증대를 위한 고분자 전처리 -

  • Seo, Yung Bum (Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Lee, Min Woo (Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Lee, Young Ho (Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University) ;
  • Jung, Jae Kwon (Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University)
  • 서영범 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 이민우 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 이영호 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 정재권 (충남대학교 농업생명과학대학 환경소재공학과)
  • Received : 2014.09.12
  • Accepted : 2014.10.03
  • Published : 2014.10.30

Abstract

In-situ $CaCO_3$ formation on recycled wood pulp was studied to improve optical property and filler attachment to the fiber furnish in papermaking. We tried to attach calcium oxide (CaO) to the recycled fibers, old newspaper (ONP) in this case, by using selected polymers before in-situ $CaCO_3$ formation reaction on fibers, and then, $CO_2$ was injected to the furnish until all the CaO on fiber surfaces was consumed. It was found that the attachment of newly formed $CaCO_3$ to recycled fibers became stronger by attaching CaO to the fibers before in-situ $CaCO_3$ formation reaction. It was expected that the polymers used for the attachment of calcium source to the fiber furnishes helped to keep the newly formed $CaCO_3$ strongly attached to the fiber surface as well as to retain the impurities associated with calcium source and recycled fibers, if any. In-situ $CaCO_3$ formation gave higher brightness and much less ERIC value in ONP sheet than the case when the equivalent amount of GCC was added to the furnish.

Keywords

References

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Cited by

  1. 고지의 효과적인 활용을 위한 in-situ 탄산칼슘 부착방식의 연구(2) - 탄산칼슘 첨가방식과 비교 및 반응온도에 따른 변화 - vol.46, pp.5, 2014, https://doi.org/10.7584/ktappi.2014.46.5.027