Preparation method of alpha-SnP/modified chitosan-polyimide fiber membrane

The invention belongs to the technical field of uranium adsorption, and particularly relates to an alpha-SnP/modified chitosan-polyimide fiber membrane and a preparation method thereof. The preparation method comprises the following steps: with chitosan and polyimide powder as raw materials and LiCl...

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1. Verfasser:	ZHU DONGXIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY DECONTAMINATION ARRANGEMENTS THEREFOR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING NUCLEAR ENGINEERING NUCLEAR PHYSICS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT TEXTILES THEIR RELEVANT APPARATUS TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Zusammenfassung:	The invention belongs to the technical field of uranium adsorption, and particularly relates to an alpha-SnP/modified chitosan-polyimide fiber membrane and a preparation method thereof. The preparation method comprises the following steps: with chitosan and polyimide powder as raw materials and LiCl as an additive, preparing a chitosan-polyimide fiber membrane through electrostatic spinning, and then putting the fiber membrane into a cationic polyacrylamide aqueous solution for modification; and then preparing alpha-SnP on the surface of the modified cellulose through H3PO4 and SnCl4 to obtainthe alpha-SnP/modified chitosan-polyimide fiber membrane. The fibrous membrane is high in uranium adsorption capacity and high in adsorption speed. 本发明属于铀吸附技术领域，具体涉及一种α-SnP/改性壳聚糖-聚酰亚胺纤维膜及其制备方法。该制备方法的步骤包括：以壳聚糖和聚酰亚胺粉末为原料，LiCl为添加剂通过静电纺丝制备壳聚糖-聚酰亚胺纤维膜，然后将纤维膜置于阳离子聚丙烯酰胺水溶液中改性，随后在改性纤维素表面通过H3PO4和SnCl4制备α-SnP得到α-SnP/改性壳聚糖-聚酰亚胺纤维膜。本发明所述纤维膜的铀吸附量高，吸附速度快。