Study on the Migration of Fluorescent Whitening Agents Used for Papermaking Process

Ji Young Lee; Chul Hwan Kim; Yong Joo Sung; Eun Hea Kim; Jae Hyung Kim; Tae Ung Park

doi:10.7584/ktappi.2016.48.3.005

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Study on the Migration of Fluorescent Whitening Agents Used for Papermaking Process 제지용 형광증백제의 전이현상에 대한 기초연구

30 June 2016. pp. 5-13

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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°C and 70% RH; this was attributed to the high moisture content of the paper. FWA migration did not occur significantly at 23°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

Fluorescent whitening agent

migration

fluorescence index

vertical contact

friction contact

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 : 48
No :3
Pages :5-13
Received Date : 2016-05-09
Revised Date : 2016-06-03
Accepted Date : 2016-06-10
DOI :https://doi.org/10.7584/ktappi.2016.48.3.005

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

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Literature Cited