Patent ID: 11964220
Assignee: GUANGDONG UNIVERSITY OF PETROCHEMICAL TECHNOLOGY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A preparation method of a hydrophilic/oleophobic sponge, comprising the following steps:
mixing a nanoparticle suspension with a modifier solution to obtain a modified solution, wherein the nanoparticle suspension comprises a silica-encapsulated Fe3O4 nanoparticle suspension and/or a nano-silica ethanol suspension, and the modifier solution is a mixture of chitosan-acetic acid aqueous solution and polyvinyl alcohol (PVA) aqueous solution; and
soaking a sponge in the modified solution, mixing and crosslinking with glutaraldehyde aqueous solution to obtain the hydrophilic/oleophobic sponge:
wherein a mass ratio of modifiers in the modifier solution to glutaraldehyde in the glutaraldehyde aqueous solution is (2.7-1.5):(0.020-0.10).