Starch-based hydrophobic paper as well as preparation method and application thereof

• Main Authors: WANG PIXIN, BAI YUNGANG, WANG CHAO, XU KUN, ZHANG FAN
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; FIBREBOARD; IMPREGNATING OR COATING OF PAPER; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS ORFROM PAPIER-MACHE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; POLYSACCHARIDES; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

The invention relates to the technical field of functional materials, in particular to starch-based hydrophobic paper as well as a preparation method and application thereof. The preparation method of the starch-based hydrophobic paper comprises the following steps: A) stirring and mixing a paper material and N, N-dimethylacetamide to obtain paper pulp; mixing the modified starch, hydrophobic silicon dioxide particles and N, N-dimethylacetamide to obtain a modified starch solution; b) stirring and mixing the modified starch solution and the paper pulp to obtain mixed pulp; and C) stirring and mixing the mixed slurry and a glutaraldehyde solution, and carrying out suction filtration to obtain the starch-based hydrophobic paper. The starch-based hydrophobic paper is used as an oil-water separation material and is suitable for demulsification separation of water-in-oil emulsion, and relatively high oil-water separation efficiency can be obtained. The starch and the silicon dioxide are used as additives, so that