APPLICATION OF FLUORESCENT WHITENING AGENT WITH INORGANIC YELLOWING INHIBITORS AGAINST LIGHT-INDUCED COLOUR REVERSION OF HYP-CONTAINING PAPER SHEETS
In recent years, High Yield Pulp (HYP) with its unique properties has found increasing applications in many value-added paper grades. However, one of the main drawbacks that limit its more extensive applications is the photo yellowing tendency due to its high lignin content. In this paper, the 4-sulfonic type of fluorescent whitening agent (FWA) was used as a stabilizer with inorganic yellowing inhibitors, zinc oxide and titanium dioxide, for aspen BCTMP during the surface sizing operation. The results show that the FWA combined with inorganic yellowing inhibitors has a good effect on stabilizing the brightness of HYP in surface application, especially for the nano-grade ZnO and TiO2. The synergistic effect of FWA and nano-grade ZnO can be obtained in retarding the photo-yellowing of HYP. The HYP brightness decreased slightly after 4-hour UV light irradiation.
fluorescent whitening agent high yield pulp zinc oxide titanium dioxide brightness stability
Zhang Hongjie Hu Huiren Wu Rina
Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin, 300 State Key Laboratory of Pulp and Paper Engineering,South China University of Technology, Guangzhou,5
国际会议
广州
英文
1852-1855
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）