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Strengthening of De-waxed Paper by Methyl Cellulose (MC) and Its Preservability - Effect of Viscosity and Coating Ratio of MC -
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 Title & Authors
Strengthening of De-waxed Paper by Methyl Cellulose (MC) and Its Preservability - Effect of Viscosity and Coating Ratio of MC -
Choi, Kyoung-Hwa; Jeong, Hye Young; Cho, Byoung-Uk;
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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 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;
 Language
Korean
 Cited by
 References
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