Impact of HYP Substitution on the Effectiveness of FWAs in Fine Paper Production
In recent years,hardwood high yield pulp(HYP)has found increased applications in many value-added paper grades due to its unique properties and lower cost.However,there remains a concern regarding the negative effect of the yellow shade of HYP.In this study,fluorescent whitening agent(FWA)was used to offset the decreased optical properties associated with the application of HYP.Some important factors on the effectiveness and efficiency of FWAs during fine paper production were investigated.Results show that the FWA effectiveness decreased with the increase in HYP substitution rate.The low HYP brightness also had negative effect on the FWA performance.Results of fluorescent microscopy show that the lower FWA retention on HYP pulp fiber(than BKP pulp fiber)is mainly due to the properties of HYP fibers,although anionic trash and fines in HYP also decrease the FWA retention to some extent.
high yield pulp fluorescent whitening agent optical properties
HONGJIE ZHANG HUIREN HU ZHIBIN HE YONGHAO NI YAJUN ZHOU
Tianjin Key Laboratory of Pulp and Paper,Tianjin University of Science and Technology,Tianjin,300457 Limerick Pulp and Paper Centre,University of New Brunswick,Fredericton,N.B.,E3B 6C2,Canada Tembec Inc.Temiscaming,Q.C.,J0Z 3R0,Canada
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
812-816
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）