Research Of Discriminate Recycled Fibers In The Sheet By Fluorescent Staining Method

The reuse of recycled fibers, which adapts to the world trend of environmental protection,is related to environmental governing and resources preservation. But in some relates to healthand safety can not be used in the paper, such as our country regulate that recycling fiber can notbe used in the production of, it is a problems that how to determine tissue paper containingrecycled fiber. As tissue paper be used more and more, this kind of question will encountermore and more. At present our country has no clear method standard to determine whethertissue paper contain recycled fiber, the current research from the Angle of the product, such aswhether they contain more heavy metal ions, organic matter, etc., but not from throughanalyzing the characteristics of the fiber itself. Therefore, by starting from the inherentcharacteristic of the fiber itself, to find an effective test method whether it recycling, then itspromotion, to promote the healthy development of the tissue paper industry plays a positiverole. And, this method can be used to confirm the regenerated fiber is contained in someproducts that must contain recycled fiber exports for some requirements of inspection is alsohas a positive meaning.Recycled fiber would be again beating and again drying; this process will make somechange of the fiber. To join the different colors of fluorescent dye, analyze its absorption of thefluorescent dye, find out its differences with the original fiber.This study is to analyze and research the recycling fiber and native of fluorescent dyeabsorption situation, combined with the analysis of the fiber morphology, find out the rootcause of the problem, and find some solution.This article selects the bleached sulfate hardwood pulp, repeated made laboratory paperafter beating in the lab by the standard adopted, this reuse of recycled fibers, and then throughuse different fluorescent dyes dyeing to carried out the best, again through the different dyeingtime, determination of the fluorescence intensity, combined with the analysis of the fibermorphology, find out the difference of recycled fiber and the original fiber. From the test result,the same kind of fiber for determining method is effective, but different kinds of fiber forfluorescent dye absorption situation is different, can’t simply comparison, comparing test needto select a variety of different fiber. And, products containing fluorescent whitening agent and some chemical enhancers for the absorption of fluorescent dyes.