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The suspension polymerization with two organic phases was adopted to prepare spherical hypercrosslinked resin by self-polycondensation of 4,4′-bis-(chloromethyl)-1,1′-biphenyl (CMB). The chemical structure, morphology and pore characteristics of the novel spherical resin were characterized with Fourier transform infrared spectroscopy (FTIR), micrograph and Brunauer-Emmett-Teller (BET). It is found that the suspension system and stirring speed impose a great influence upon the regularity and size distribution of hypercrosslinked beads. To prepare CMB resin beads with diameter of about 300 μm, the optimal condition is as follows: stirring speed 300 r·min-1 , and the volume ratio of the two organic phases (nitrobenzene/dimethyl silicon oil) 1︰5. After the self-polycondensation and succedent post-crosslinking of CMB monomer, the spherical adsorbent presents high special surface area (1190 m2 ·g-1 ) and abundant pore volume (0.714 cm 3 ·g-1 ), and could be potentially applied in the adsorption of various organic molecules and synthesis of porous ion exchanger.
The suspension polymerization with two organic phases was adopted to prepare spherical hypercrosslinked resin by self-polycondensation of 4,4’-bis- (chloromethyl) -1,1’-biphenyl (CMB). The chemical structure, morphology and pore characteristics of the none spherical resin were characterized with Fourier transform infrared spectroscopy (FTIR), micrograph and Brunauer-Emmett-Teller (BET). It is found that the suspension system and stirring speed impose a great influence upon the regularity and size distribution of hypercrosslinked beads. prepare CMB resin beads with diameter of about 300 μm, the optimal condition is as follows: stirring speed 300 r · min-1, and the volume ratio of the two organic phases (nitrobenzene / dimethyl silicon oil) 1︰5. After the self -polycondensation and succedent post-crosslinking of CMB monomer, the spherical adsorbent presents high special surface area (1190 m 2 · g -1) and abundant pore volume (0.714 cm 3 · g -1), and could be potentially applied in t he adsorption of various organic molecules and synthesis of porous ion exchanger.