Strengthening of De-waxed Paper by Methyl Cellulose (MC) and Its Preservability : Effect of Viscosity and Coating Ratio of MC

Kyoung-Hwa Choi; Hye Young Jeong; Byoung-Uk Cho

doi:10.7584/ktappi.2015.47.6.130

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Strengthening of De-waxed Paper by Methyl Cellulose (MC) and Its Preservability : Effect of Viscosity and Coating Ratio of MC 메틸셀룰로오스에 의한 탈랍지의 강도보강처리 : 메틸셀룰오스 점도 및 도포율의 영향

30 December 2015. pp. 130-138

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Abstract

This study was conducted to investigate the effect of the strengthening treatment of methyl cellulose (MC) on properties and aging characteristics of the dewaxed papers during humid heating aging. Beeswax-treated Hanji was dewaxed by the supercritical fluid extraction method, and subsequently the strengthening treatment was performed with MCs having three different viscosities. MC was first applied by dipping a dewaxed paper into a MC solution whose concentration was controlled from 0.5% to 1.5%. After the strengthened papers were artificially aged at 80℃ and 65% RH, the changes in optical and mechanical properties of the samples were evaluated. The results show that viscosity and especially pick-up of MC influenced the strengthening efficiency and aging characteristics of dewaxed paper. Strength was increased with the MC coating weight; in addition, strengthening with MC improved preservability of the dewaxed paper. The optimum conditions for the strengthening with MC was found to be the coating ratio of 4% with 1500 cP MC.

Keywords

Methyl cellulose

viscosity

coating weight

strengthening

dewaxed paper

aging characteristics

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 : 47
No :6
Pages :130-138
Received Date : 2015-11-20
Revised Date : 2015-12-16
Accepted Date : 2015-12-18
DOI :https://doi.org/10.7584/ktappi.2015.47.6.130

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

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Literature Cited