Preparation method of chitosan-grafted beta-cyclodextrin bonded silica gel absorbent

• Main Authors: XIE ZENGHONG, WANG XIAOMING, LV HAIXIA, AN HONGTAO, YI JIAOJIAO
• Format: Patent
• Language: Chinese; English
• Published: 22.05.2013
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLYSACCHARIDES; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a chitosan-grafted beta-cyclodextrin bonded silica gel absorbent as well as a preparation method and application of the chitosan-grafted beta-cyclodextrin bonded silica gel absorbent, and belongs to the technical field of the absorbent material preparation. The preparation method of the chitosan-grafted beta-cyclodextrin bonded silica gel absorbent comprises the steps of (1) activating silica gel, (2) bonding the silica gel with gamma-aminopropyl, (3) carrying out silica gel formyl group modification reaction, and (4) bonding chitosan with glutaraldehyde and grafting beta-cyclodextrin with the chitosan. According to the chitosan-grafted beta-cyclodextrin bonded silica gel absorbent provided by the invention, the activated silica gel surface is chemically modified by gamma aminopropyl triethoxy silane, and then, cyclodextrin-grafted chitosan is taken as a functional monomer to compound a solid-phase extraction material. By combining cyclodextrin recognition performance and a chitosan ab