Core-sheath fiber-polyurethane guided solid particles grafted on polyacrylonitrile fiber surface and its application in adsorbing acetone

摘要

This manuscript will provide the successful application of polyurethane-guided solid particles to core-sheath electrospun fibers prepared on the surface of polyacrylonitrile fibers and their application in removing acetone from indoor air pollution. The difference between single-fluid electrospinning and coaxial electrospinning was compared using a coaxial electrospinning process. Through the transmission electron microscope image, the polyurethane-bonded non-spun solid MCM-41 can be well wrapped on the outside of the polyacrylonitrile fiber. By using the functional groups in MCM-41 and PU and the high specific surface area of the fibers, it is used to treat low concentrations of acetone in the chamber. The adsorption results showed that acetone with an initial concentration of 10 ppm achieved effective adsorption using PU@10MCM/PAN, and the maximum adsorption amount was 10.32 mu g/g. The Langmuir and Freundlich model can be used to describe the p88rocess. The Experimental value is in good agreement with the Langmuir model. The desorption results show that the adsorption capacity can be even after 5 cycles of reuse. The mechanism of preparation and application of polyurethane/polyacrylonitrile core-sheath electrospun fibers was proposed. This work shows that our new structure of fiber provides a theoretical basis for the adsorption system of air purifiers, effectively preventing the harmful organic gases from invading the human body.