한국펄프종이공학회:학술대회논문집 (Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference)

한국펄프종이공학회 (Korea Technical Association of the Pulp and Paper Industry)
권호 표지

강제열화에 따른 종이의 색상변화

Effects of thermal aging on variations in paper color

  • 김선경 (강원대학교 산림환경과학대학 제지공학과) ;
  • 최은연 (강원대학교 산림환경과학대학 제지공학과) ;
  • 이용규 (강원대학교 산림환경과학대학 제지공학과) ;
  • 조병욱 (강원대학교 산림환경과학대학 제지공학과)
  • Kim, Sun-Kyung (Dept. of Paper Science & Engineering, College of Forest Environmental Science, Kangwon National University) ;
  • Choi, Eun-Yeon (Dept. of Paper Science & Engineering, College of Forest Environmental Science, Kangwon National University) ;
  • Lee, Yong-Kyu (Dept. of Paper Science & Engineering, College of Forest Environmental Science, Kangwon National University) ;
  • Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest Environmental Science, Kangwon National University)
  • 발행 : 2011.04.14
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초록

Effects of thermal aging on color variations of various papers were evaluated. With thermal aging, most of papers showed a special trend in $a^*$-$b^*$ plane: $a^*$ (red-green) values of the samples were reduced at beginning and after a turning point it was increased while $b^*$ (blue-yellow) was kept increased (yellowing of paper). In case of filter paper which consists of chemical pulps, the changes in $a^*$ value was occurred late compared with other samples. In case of the copy paper with optical brightening agent, the turning point in $a^*$ was not observed while a constant increase in $b^*$ was observed. In case of color paper, no specific trends in $a^*$-$b^*$ were found.

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