Oversized porous crystal adhesive microspheres and preparation method thereof

• Main Authors: ZHANG SONGHONG, YAO SHANJING, GUAN YIXIN, YUN JUNXIAN, YAO KEJIAN, TU CHANGMING, LIN DONGQIANG, XU LINHONG, SHEN SHAOCHUAN
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2012
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention provides oversized porous crystal adhesive microspheres, which has the particle size range of 500swung dash1500mu m, the average particle size of 800swung dash1300mu m, the particle size polydispersity exponent of 0.16swung dash0.3, the pore size of 1swung dash80mu m and the porosity of 90swung dash98%, and is prepared by taking polyacrylamide as a framework material. The invention utilizes a microchannel fluid focusing technology to form drops, the sizes of the formed microdrop are uniform, the crystal adhesive microspheres which are formed after crystallized pore forming and polymerization have narrow particle size distribution, the particle sizes are adjusted through the flowing of oil-water phases, so the controllable preparation of crystal adhesive microsphere particlesis realized; and the prepared crystal adhesive microspheres have narrow particle size distribution scope, more uniform particle sizes, large pore size, high porosity, good porous channel connectivityand certain mechanical str