Effects of Artificial Thermal Aging on Variations in Color of Commercial Papers

Eun-Yeon Choi; Yong-Kyu Lee; Byoung-Uk Cho

doi:10.7584/ktappi.2014.46.4.054

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2014 Vol.46, Issue 4 Preview Page Next Page

Effects of Artificial Thermal Aging on Variations in Color of Commercial Papers 건열처리 인공노화가 시판지의 색상변화에 미치는 영향

30 August 2014. pp. 54-61

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Abstract

Effects of artificial thermal aging on color variations of various commercial papers (fine paper, coated paper, newsprint and filter paper) were investigated. With thermal aging at 105^oC, most of papers showed a special trend in a*-b* plane: the a* (red-green) values of the samples were initially reduced (heading to –a* side) and after a turning point they increased to +a* side while the b*(blue-yellow) values were kept increased to +b* side (yellowing of paper). Different papers had different turning points for a* value. The filter paper consisted of a pure chemical pulp and the copy paper with OBA (optical brightening agent) showed the latest turing points. In addition, the papers without OBA showed less reduction in brightness compared with that with OBA, suggesting that OBA could adversely influence the brightness stability during thermal aging.

Keywords

Thermal aging

brightness

optical brightening agent

color differences

CIE L*a*b*

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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 : 46
No :4
Pages :54-61
Received Date : 2014-08-14
Revised Date : 2014-08-20
Accepted Date : 2014-08-22
DOI :https://doi.org/10.7584/ktappi.2014.46.4.054

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

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