Abstract
A novel ZnO/cotton composite, in which ZnO nanoparticles were synthesized directly inside of the lumen and the mesopores of cotton fibers, was fabricated via a simply two-step hydrothermal method in situ using zinc nitrate hexahydrate and hexamethylenetetramine as raw materials. The as-obtained cotton sample was characterized by powder X-ray diffractometer, field emission scanning electron microscopy, and energy-dispersive spectroscopy, respectively. The UV-blocking property of the as-obtained sample was investigated by UV–vis spectrophotometry. The results showed that hexagonal wurtzite nano-ZnO with a diameter of about 30–40 nm was successfully assembled into the lumen as well as the mesoporous structure of the cotton fibers. The UV-blocking property of the modified cotton fibers can be greatly improved by assembling nano-ZnO into the inner of cotton fibers. Comparing with the neat cotton fibers, the UV-blocking ratio of the ZnO assembled cotton fibers inside of KBr disk could reach 80% at 300 nm and 95% at 225 nm, respectively. Therefore, it demonstrated a significant advance in protective functional treatment and provided a potential commercialization.
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Acknowledgments
The work was supported by the National Natural Science Foundation of China (Grant No. 51002183) and jointly supported by the National Natural Science Foundation of China and the Civil Aviation Administration of China (Grant No. 61079010). We are also grateful to the Research Fund of Civil Aviation University of China (No. 2011kys04).
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Li, Y., Zou, Y. & Hou, Y. Fabrication and UV-blocking property of nano-ZnO assembled cotton fibers via a two-step hydrothermal method. Cellulose 18, 1643–1649 (2011). https://doi.org/10.1007/s10570-011-9600-5
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DOI: https://doi.org/10.1007/s10570-011-9600-5