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Preparation and Properties of Poly(vinyl alcohol) Fluorescence Fiber Acetalized with Glutaraldehyde
Asian Journal of Chemistry,
Vol. 26 No. 2 (2014): Vol 26 Issue 2
Abstract
Hydrophilic poly(vinyl alcohol) (PVA) fluorescence fiber was formed by dispersing oil soluble fluorescent pigment in PVA aqueous solution and wet spinning. The prepared fluorescence fiber was crosslinked with glutaraldehyde to improve the stability in hot water. Filament strength tester was used to determine the tensile properties of acetalized fiber. The crosslinked fluorescence fibers were observed by hot stage microscope and X-ray diffraction. Hot stage microscope observation revealed that the meltable PVA fluorescence fiber could be transformed into infusible by acetalization. The XRD results showed that the acetalization took place in the amorphous region of the fiber. The transformations of the crystal structures may happen if both the fluorescent pigment and the water get involved in the fiber but have nothing to do with the acetalization of the PVA fluorescence fiber. The fluorescence spectrum indicated a maximum absorption of the crosslinked fluorescence fiber is 373 nm and a maximum excitation wavelength is 494 nm, thereby it demonstrated that the acetalization didn’t damage the fluorescence nature of the fiber. As the acetalization took place in amorphous regionthe process didn’t damage the PVA fluorescence fiber mechanical properties.
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References
R.H. Geisel, Method of Providing Luminescence to Fibrous Materials, US Patent 5674437 (1997).
W. Owens, Process for Producing Phosphorescent Yarn and Yarn Produced by the Process, US Patent 5321069 (1994).
L.E. Doane Jr., Toy Doll Construction with Phosphorescent Hair Fibers, US Patent 4781647 (1988).
Y. Shimizu, K. Ogasawara, K. Sakakura, A. Ogura and D. Goto, High Luminance Luminous Fiber and Process for Producing the Same, US Patent 6162539 (2000).
Dorset, Text. Manuf., 82, 636 (1956).
A.M. Araujo, M.T. Neves Jr. and W.M. Azevedo, Protein Immobil. Biotechnol. Techniq., 11, 67 (1997).
PP.A. Ramires and E. Milella, J. Mater. Sci. Mater. Med., 13, 119 (2002).
D. Jizhen, Z. Yaoming and C. Xueying, Synthetic Fiber Production Tectonics, China Textile Press, Beijing, edn. 2 (1994).
C. Guozhen, H. Xianzhi and X. Jingou, Fluorescence Analysis, China Science Press, Beijing, edn. 2 (1990).