The Preparation And Application Of Fluorescence Plant Fiber

With the development of economy, the products are forged seriously. In the fields of food, medicine, wine and tobacco, the counterfeit packages result in the economy loss and endanger people's health. So it is necessary to develop the anti-counterfeit technology.In this paper, functional fibers were made by pre-modification treatment on fiber, and then mixed with fluorescence oil. The factors that affected the modification of fiber were studied to determine the optimum process conditions via measuring rate of absorption, water absorbability, oil absorbability and oil-retention, at the meantime, the changes of fiber structure and properties, the effects of factors in the composite process between modified fiber and fluorescence oil were also studied. The structure and properties of fluorescence fiber, application of fluorescence fiber in pulp and papermaking were characterized by using various analytical tools. The major findings of this study are as follows:1,The influences of K and fiber concentration, immersion time and tempreture, and drying time and tempreture on modification treatment were studied, and major findings are as follows: K concentration is 2%, fiber concentration is 1.5%, immersion time and tempreture is 24h and 60℃, drying time and tempreture is 3h and 100℃.2,The structure and properties of fibers were studied. The results showed that Si-O-C bond was formed between silane coupling agents and fibers, a dense and soft plastic film covered the fiber, that changed surface morphology of fiber after treated, lowed fiber hydrophilicity and strengthened its lipophilic performance, but the crystal structure of fiber had no change.3,The influence of different fibers and treat conditions on the fluorescence intensity, effects of factors in the composite process between modified fiber and fluorescence oil were studied by orthogonal experiment design. The results showed that fluorescence oil concentration had a significantest impact, and then fiber concentration, reaction time, reaction tempreture successively. Compared with raw fiber, fluorescence fibers, prepared with treated fiber by freeze drying and air drying, were all displayed a salutary effect.4,The structure and properties of fluorescence fiber were studied. The FTIR and XPS results showed that bands and elemental composition had changed, accruing on the surface of fluorescence fiber, it is because of box-like fluorescence materials had thickly covered in canals and hollow of fluorescence fiber. Fibers prepared had high fluorescence intensity, good fluorescence fastness, and high quality dispersion in water. Meanwhile, anti-counterfeit and application properties of fibers prepared were pretty well, and they could glow with red light under UV light.5,The application properties of fluorescence fiber were studied by ananlizing the influence of fluorescence fiber and retention agent content, and paper size on the retention of fiber. The result showed that the lower paper size, the more fiber prepared scattered in the paper. Paper could meet the anti-counterfeit and duplication of certain high utilization needs, when the retention agent content is 0.10%-0.15%, and fluorescence fiber content is lower than 0.01%.