Properties of Coated Paper Containing Cellulose Nanofibrils as an Additive

Kyudeok Oh; Yong Joo Sung; Hak Lae Lee

doi:10.7584/JKTAPPI.2022.10.54.5.23

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2022 Vol.54, Issue 5 Preview Page Next Page

Properties of Coated Paper Containing Cellulose Nanofibrils as an Additive 셀룰로오스 나노피브릴을 첨가제로 이용한 도공지의 물성

30 October 2022. pp. 23-31

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Abstract

Cellulose nanofibrils (CNF) derived from wood can be used as thickening agents for suspensions or slurries because they form a gel structure by absorbing water and demonstrate an excellent shear thinning behavior. When used as a thickening agent for paper coating, CNF influences the rheological properties and water retention of the coating color, affecting the properties of the coated paper. In this study, the effects of CNF and carboxymethyl cellulose (CMC) on the properties of the coated paper were investigated. In contrast to the CMC-coating, the gloss of the CNF-coating was not improved, even when the coating weight was increased, because of the irregular shrinkage of CNF in the wet coating layer through its gel-formation characteristics. The CNF-coating exhibited a much higher ink and vehicle absorption rate than the CMC-coating. The CNF-coating showed lower variation in the printing density depending on the coat weights. Moreover, the open structure of the CNF-coating improved the absorption rate of the coated paper compared to the CMC-coating, resulting in reduced mottling.

Keywords

Coated paper

Printability

Cellulose nanofibrils

pigment coating

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 : 54
No :5
Pages :23-31
Received Date : 2022-09-15
Revised Date : 2022-10-16
Accepted Date : 2022-10-17
DOI :https://doi.org/10.7584/JKTAPPI.2022.10.54.5.23

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

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Literature Cited