Effects of Fiber Fines/Nano-sized Calcium Carbonate Composites on Physical Properties of Paper

Jung-Yoon Park; Tai-Ju Lee; Hyoung-Jin Kim

doi:10.7584/JKTAPPI.2016.12.48.6.255

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2016 Vol.48, Issue 6 Preview Page Next Page

Effects of Fiber Fines/Nano-sized Calcium Carbonate Composites on Physical Properties of Paper 미세섬유-나노사이즈 탄산칼슘 복합체가 종이의 물리적 특성에 미치는 영향

30 December 2016. pp. 255-262

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Abstract

In the papermaking industry, especially printing and writing paper, the main raw material is bleached kraft pulp. However, there is an extremely high dependence on imported bleached kraft pulp. One way to reduce fibrous material is by adding inorganic fillers. Excessive filler loading, however, may cause the deterioration of paper properties. In the papermaking industry, micro-scale fillers have been used for a long time, but recently, the trend is to apply nanotechnology. Although nanoparticles have been utilized to improve the optical properties in surface sizing and coating, it has been challenging to apply nanotechnology in wet-end partly due to its poor dispersability and retention. In this study, fiber fines/nano-sized calcium carbonate (fines-nPCC) composite was examined. Cationic polyacrylamide of low molecular weight with high-charge density was used as a flocculant to make the fines-nPCC composite. By measuring turbidity and chemical oxygen demand of the supernatant after centrifugation, the optimal dosage of the flocculant was found to be 0.5% for nPCC. As a result, the filler retention and the mechanical properties of handsheets filled with fines-nPCC composite were increased. Through this study, the applicability of nano-sized calcium carbonate and fines-nPCC composite was confirmed as a novel filler.

Keywords

Nano-sized calcium carbonate

fiber fines

composite

filler

papermaking

References

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 48
No :6
Pages :255-262
Received Date : 2016-12-02
Revised Date : 2016-12-23
Accepted Date : 2016-12-26
DOI :https://doi.org/10.7584/JKTAPPI.2016.12.48.6.255

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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Literature Cited