Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
권호 표지
DOI QR코드

DOI QR Code

Application of In-situ CaCO3 Formation Method for Better Utilization of Recycled Fibers (2) - Comparison with CaCO3 Addition Method and Effects of Temperature -

고지의 효과적인 활용을 위한 in-situ 탄산칼슘 부착방식의 연구(2) - 탄산칼슘 첨가방식과 비교 및 반응온도에 따른 변화 -

  • 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) ;
  • Seo, Yung Bum (Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University)
  • 이민우 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 이영호 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 정재권 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 서영범 (충남대학교 농업생명과학대학 환경소재공학과)
  • Received : 2014.09.17
  • Accepted : 2014.10.03
  • Published : 2014.10.30
Download PDF
⟨ Previous Next ⟩

Abstract

In-situ $CaCO_3$ formation onto recycled wood pulp was studied to improve optical properties and ash attachment to the fiber furnish in papermaking. We controlled initial reaction temperature of in-situ $CaCO_3$ formation method from $30^{\circ}C$ to $50^{\circ}C$. It was found that the attachment of newly formed $CaCO_3$ to recycled fibers, old newspaper (ONP) in this case, was stronger than that of ground calcium carbonate (GCC, mean dia. $2.4{\mu}m$) addition case, but was not much different among those formed at different temperature. Morphologies of newly formed $CaCO_3$ were changed according to the reaction temperature. More aragonite shape was seen at higher temperature. In-situ $CaCO_3$ formation increased brightness and lowered ERIC value of ONP sheet greatly at the same level of ash contents when compared to GCC addition method, but gave equivalent ERIC and brightness when compared to those of the precipitated calcium carbonate (PCC) addition method. However, tensile strength of the handsheets of the in-situ $CaCO_3$ formation method were much greater than those of the PCC addition method.

Keywords

References

  1. Park, D. H., Lee, M. W., Lee, J. K., Ahn, J. W., and Seo, Y. B., Application of in-situ $CaCO_3$ forming process on recycled fibers for optical property improvement, Journal of Korea TAPPI 44(4):8-15 (2012). https://doi.org/10.7584/ktappi.2012.44.4.008
  2. Lee, M. W., Quality improvement of recycled pulp by In-situ $CaCO_3$ formation, Doctor's Thesis, Chungnam University, Daejeon, Korea (2013).
  3. Kim, J. J., Ahn, J. W., Lee, M. W., Lee, J. K., and Seo, Y. B., Improving recycled fibers in printing paper by application of an in-situ $CaCO_3$ formation method 1. Process effects, Appita J. 65(4):347-351 (2012).
  4. Kim, J. J., Ahn, J. W., Lee, M. W., Lee, J. K., and Seo, Y. B., Improving recycled fibers in printing paper by application of an in-situ $CaCO_3$ formation method 2. Paper properties, Appita J. 66(1):54-58 (2013).
  5. Silenius, P., Preparation of filler containing papermaking materials by precipitating calcium carbonate in-situ in the presence of cellulosic materials, Master Thesis, Lappeenranta University of Technology, Lappeenranta, Finland (1996).
  6. Silenius, P., Improving the combinations of critical properties and process parameters of printing and writing papers and paperboards by new paper-filling methods, Ph.D. Thesis, Helsinki Univ. of Tech., Helsinki, Finland (2002).
  7. Seo, Y. B., Lee, Y. H., and Chung, J. K., The improvement of recycled newsprint properties by in-situ $CaCO_3$ loading, BioResources 9(4):6254-6266 (2014).
  8. Seo, Y. B., Lee, M. W., Lee, Y. H., and Jung, J. K., Application of in-situ $CaCO_3$ formation method for better utilization of recycled fibers -Enhancing attachment of $CaCO_3$ to fibers by polymer pre-treatment-, Journal of Korea TAPPI 46(5):19-26 (2014). https://doi.org/10.7584/ktappi.2014.46.5.019
  9. Yamada, H., Control of morphology of precipitated calcium carbonate, Japan Tappi Journal 44(1):62-69 (1990). https://doi.org/10.2524/jtappij.44.62
  10. Canselier, J. P., The effects of surfactants on crystallization phenomena, J. Dispersion Science and Technology 14(6):625-644 (1993). https://doi.org/10.1080/01932699308943435
  11. Verdoes, D., Landschoot, R. C., and Van Rosmalen, G. M., The influence of additives on the crystal size distribution of $CaCO_3$ in batch precipitation experiments, Report of Delft Univ. of Tech., pp. 621-626 (1988).