화학공학소재연구정보센터
Chinese Journal of Chemical Engineering, Vol.21, No.4, 447-452, 2013
Two Organic Phase Suspension Polymerization for Novel Hypercrosslinked Resin Bead by Polycondensation of CMB
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 (FM), 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 mu m, 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 the adsorption of various organic molecules and synthesis of porous ion exchanger.