General post-modified cellulose porous material and preparation method thereof

The invention relates to a general post-modified cellulose porous material and a preparation method thereof. The material is prepared in the mode that cellulose suspending liquid, acetoacetic acid cellulose solution and amino silane coupling agent are mixed and frozen, then general post-modified cellulose porous material is obtained, the surface contains acetoacetic acid functional groups, and theacetoacetic acid functional groups can be subjected to reversible modification by functional molecules which contains primaquine groups by using dynamic covalent enamine bonding. The preparation method comprises the steps that the amino silane coupling agent is added into the cellulose suspending liquid and stirred to obtain mixed suspending liquid, then the acetoacetic acid cellulose solution isadded into the mixed suspending liquid and stirred, the mixture is subjected to standing to obtain mixed gel, liquid nitrogen freezing is conducted to obtain icy gel, and after freezing and drying and roasting and curing, the