Dual-wavelength fluorescent anti-counterfeiting fibers with skin-core structure
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Huihui Zhang
,
Yuanyuan Xu
Abstract
In this work, a skin-core structure was designed, and three kinds of dual-wavelength fluorescent anti-counterfeiting (DWFA) fibers, including UV short-wavelength/UV long-wavelength, infrared/UV short-wavelength, and infrared/UV long-wavelength excitable DWFA fibers with skin-core structure, were spun using fluorescent powder/PP pellets as the skin material and pure PP as the core material. The results showed that these DWFA fibers emitted two different colors of light under excitation of two different wavelength lights, which exhibited higher anti-counterfeiting safety. Take UV short-wavelength/UV long-wavelength DWFA fibers, for example; the influence of skin-core ratio on the structure and properties of fibers were investigated, and then the luminous efficiency of DWFA fibers with skin-core structure and homogenous structure was compared. The microscope photos and 3D simulation of fluorescent powder in fibers by confocal laser scanning microscope showed that the fluorescent powders were basically distributed in the skin layer of fibers. The crystallinity degree and tensile strength of DWFA fibers with skin-core structure decreased first and then increased with the decrease in skin-core ratio, whereas elongation of fibers showed an increasing trend. Compared with homogenous DWFA fibers, the skin-core DWFA fibers exhibited higher luminous efficiency under the same fluorescent powder content.
Acknowledgment
We thank Lansen Lu of Donghua University for his help with melt-spinning process of DWFA fibers, and thank Research Center of Analysis and Measurement, Donghua University for the analysis and characterization of DWFA fibers.
Funding: This work was supported by the Open Project Program of Fujian Key Laboratory of Novel Functional Fibers and Materials (Minjiang University), China (FKLTFM1721), and the Fundamental Research Funds for the Central Universities of China (17D110622).
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Artikel in diesem Heft
- Frontmatter
- Material properties
- Synthesis, characterization and low energy photon attenuation studies of bone tissue substitutes
- The effect of oxygen plasma pretreatment on the properties of mussel-inspired polydopamine-decorated polyurethane nanofibers
- Effects of selected bleaching agents on the functional and structural properties of orange albedo starch-based bioplastics
- Study on the thermal and structural properties of gamma-irradiated polyethylene terephthalate fibers
- Preparation and assembly
- Stereocomplex electrospun fibers from high molecular weight of poly(L-lactic acid) and poly(D-lactic acid)
- Dual-wavelength fluorescent anti-counterfeiting fibers with skin-core structure
- Graphene oxide and zinc oxide decorated chitosan nanocomposite biofilms for packaging applications
- Supramolecular adsorption of cyclodextrin/polyvinyl alcohol film for purification of organic wastewater
- Engineering and processing
- Effects of high-efficiency infrared heating on fiber compatibility and weldline tensile properties of injection-molded long-glass-fiber-reinforced polyamide-66 composites
- Toward the development of polyethylene photocatalytic degradation
