Fabrication And Basic Application Of Ion Exchange AN-VDC Copolymer Fiber Containing Actived Carbon

With the development of life sciences, the objectives of separation of adsorbing-separating technology have ranged from simple metal ions, small molecule compounds to macromolecular and various universal biologic substances. The adsorbing-separating materials have realized transition from adsorbing-separating resin to adsorbing-separating fiber. The wet-spun absorbable AN-VDC copolymer fiber containing various contents of actived carbon (AC) was produced via coagulation strategy, whereas the various type ion exchange fiber and AN-VDC copolymer fiber containing AC loaded nano-MnO₂ partials were obtained successively in the basic. The preparation crafts, structure and properties of fiber were investigated by using the Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electronic Microscopy (SEM), etc. The Effects of treat condition afterwards on mechanical properties of fiber were discussed in detail, and the adsorbing properties to L-arginine of carboxylic ion exchange AN-VDC copolymer fiber containing AC, and adsorbing decompose properties to HCHO of AN-VDC copolymer fiber containing AC loaded nano-MnO₂ were analyzed and discussed in depth.We investigated and optimized the optimal crafts of aq-hydrazine and hydrolysis reaction of ion exchange AN-VDC copolymer fiber containing AC, and the optimal cross linkaging condition was as follows: the concentration of aqueous hydrazine was 20.9%, the temperature was 100℃ and the time was 7.5 hours; The optimal hydrolyze condition was: the concentration of NaOH was 1.0mol/L, the hydrolyze time was 6～7 hours and the hydrolyze temperature was 90～100℃.The configuration and properties of Na-IEF, H-IEF and N-IEF were analyzed. The results showed that H-IEF had the better adsorbing capacity to L-arginine, and its adsorption capacities of the static and dynamic state were analyzed and the results were compared with other ion-exchange materials. The experiment results showed that the amount of the static saturated adsorption of L-arginine on carboxylic ionexchange fiber increased with the increase of the concentration of L-arginine, but the absorption rate decreased, in according with Freundlish and Langmuir isothermal adsorption models. The obtained fiber had excellent adsorption capability to L-arginine, and it reached the balance within 30min, furthermore the fiber had strong adsorption capability to L-arginine at dynamic state, and they adsorbed and eluted quickly.We used the AN-VDC copolymer fiber containing AC as the carrier catalyst of MnO₂ in this paper and applied to adsorb and decompose formaldehyde at room temperature. The catived carbon contained in fiber can adsorb quickly the low concentration formaldehyde so as to enrich on the carrier and MnO₂ loaded fiber can accelerate to decompose it. The experiment results showed that, the MnO₂ particles scattered uniformally after milled for 6h, the average diameter was 300nm, which loaded on the surface of fiber in flat successfully. The removal efficiencies to HCHO of MnO₂ milled for 6h was up to 94.07% after 72h, the removal efficiencies increased with the content of MnO₂ loaded, it's increased after treated with DMF, or so was 7%.