| Wool keratin fibers-one of early human use of natural fibers has become an important raw material in textile industry with a large number of excellent performances that unmatched by other fibers. But due to the limitations of wool quality and textile technology, a great quantity of short fibers and crude fibers are discarded during wool weaving every year and a mass of waste wool keratin textile fibers are abandoned in our daily life, by reducing the wool keratin resources waste and environmental pollution, the researchers widespread concern and focus on the study of preparation method of wool keratin solution, the requirements of selecting dissolve solvent is higher since its unique keratin network structure, but the present dissolution methods of wool keratin fibers are problematic, such as complex process, low pull rate, low concentration and secondary pollution,that limited the application of wool keratin.In this paper, for preparation of a wool/ionic liquid solution system using a new type of green solvents ionic liquids as the solvent to dissolve the wool keratin fibers. Secondly, the chemical co-precipitation technology was used to prepare ultra-fine powder. Finally, the function keratin composite membrane material was regenerated from wool/ionic liquid solution system added the prepared ITO powder.Studied the wool fiber dissolution properties of the impact of various factors such as the type of ionic liquid, solution temperature, the wool fiber concentration, and the optimum conditions to dissolve the wool keratin fibers are obtained,[AMIM]+·Cl-ionic liquid,10wt.%wool keratin fiber concentration,130℃solution temperature. The mechanism of ionic liquids dissolve wool fibers was explored through the FT-IR, TGA, XRD and SEM analysis approaches, the results indicated that ionic liquid has a good ability to dissolve the wool fibers, the regenerated wool keratin from ionic liquids exhibited a β-sheet structure and the disappearance of the a-helix structure, the thermal stability of regenerated wool keratin films decreased slightly because of the part of the disulfide bond breakage by oxidation reaction. The callback ratio of ionic liquid was reached95%, the solubility was almost no change. Secondly, the factors impacted on the crystal structure of ITO powder in the preparation process was studied, such as pH value, reaction temperature, calcination temperature and the atom number ratio of indium and tin, and through the XRD and SEM analysis approaches the optimum conditions to prepare the ITO Nano-powder are obtained, reaction temperature of70℃, the atom number ratio of indium and tin was10:1, the end pH value of7, the calcination temperature of600℃. By this typical Procedure, the rod-like ITO Nano-powders with particle size range of50-100nm and the best of the cubic crystalline structure of iron manganese ore are prepared. Finally, studied the optical and electrical properties of Nano ITO-wool keratin composite functional materials, the results show that the composite material has a low sheet resistance of0.39kΩ/□, and the polyester fabric treated by the composite keratin solution with a lower peak voltage and half-life of electrostatic pressure respectively is651V and0.53s, but also the UV transmittance of ITO-wool keratin composite film are reduced with the maximum UPF of43.78within the entire of250-400nm UV wavelength, Therefore, it’s concluded that Nano ITO-wool keratin composite functional materials has good anti-ultraviolet and anti-static performance. |
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