Chitosan/fibroin-based dual-structure porous adsorption filtering material taking polyethylene glycol as pore-foaming agent and preparation method thereof

The invention provides a chitosan/fibroin-based dual-structure porous adsorption filtering material taking polyethylene glycol as a pore-foaming agent. The porous adsorption filtering material is composed of fibroin, chitosan and the pore-foaming agent, the mass ratio of the fibroin to the chitosan is 1-9: 9-1, the molecular weight of the chitosan is 50000-100000, the deacetylation degree of the chitosan is 80-95%, and the pore-foaming agent is polyethylene glycol. The chitosan/fibroin-based dual-structure porous adsorption filtering material taking polyethylene glycol as a pore-foaming agenthas a relatively good adsorption effect on metal ions, and can be used as an adsorption filtering material to be applied to the fields of biomedical materials, heavy metal treatment, wastewater decomposition and filtration, precious metal recovery, hygienic products, liquid absorption materials and the like. 本发明提供了一种以聚乙二醇为致孔剂的壳聚糖/丝素基双重结构多孔吸附过滤材料，所述多孔吸附过滤材料由丝素、壳聚糖和致孔剂组成，丝素和壳聚糖的质量比为1-9:9-1，所述的壳聚糖分子量50000-100000，壳聚糖的脱乙酰度80-9