Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Study on the Migration of Fluorescent Whitening Agents Used for Papermaking Process

제지용 형광증백제의 전이현상에 대한 기초연구

  • Lee, Ji Young (Dept. of Environmental Materials Science/IALS, Gyeongsang National University) ;
  • Kim, Chul Hwan (Dept. of Environmental Materials Science/IALS, Gyeongsang National University) ;
  • Sung, Yong Joo (Dept. of Biobased Materials, College of Agriculture and Life Science, Chungnam Natl. Univ.) ;
  • Kim, Eun Hea (Dept. of Forest Products, Gyeongsang National University) ;
  • Kim, Jae Hyung (Dept. of Environmental Materials Science, Gyeongsang National University) ;
  • Park, Tae Ung (Dept. of Environmental Materials Science, Gyeongsang National University)
  • 이지영 (경상대학교 환경재료과학과/농업생명과학연구원) ;
  • 김철환 (경상대학교 환경재료과학과/농업생명과학연구원) ;
  • 성용주 (충남대학교 농업생명과학대학 환경소재공학과) ;
  • 김은혜 (경상대학교 임산공학과) ;
  • 김재형 (경상대학교 환경재료과학과) ;
  • 박태웅 (경상대학교 환경재료과학과)
  • Received : 2016.05.09
  • Accepted : 2016.06.10
  • Published : 2016.06.30
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Abstract

This study investigated the effects of different factors on the migration of a fluorescent whitening agent (FWA) from paper treated with FWAs to non-fluorescent papers. FWA migration experiments were carried out in vertical and friction contacts between the papers dyed with FWAs and non-fluorescent papers. During the experiments, we identified the effects of the addition and types of FWAs, contact time, temperature, and relative humidity (RH) on FWA migration. The fluorescence indices of the non-fluorescent papers were measured before and after the migration experiments, and the Student's t test, a statistical tool, was utilized to compare results from different migration experiments. In vertical contact experiments, FWA migration to non-fluorescent paper was observed at $30^{\circ}C$ and 70% RH; this was attributed to the high moisture content of the paper. FWA migration did not occur significantly at $23^{\circ}C$ and 50% RH. In the friction contact experiments, FWA migrations were identified at both temperature conditions and RH percentages. The addition and types of FWAs did not increase the fluorescence index of non-fluorescent papers. Therefore, it was concluded that the moisture content of paper and the friction contact affected FWA migration from the papers containing internal and surface FWAs.

Keywords

References

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