| 摘要 |
PURPOSE: Provided is a method for producing a granular polymer for fillers of high performance liquid chromatography and ion chromatography column by suspension polymerization. CONSTITUTION: The method comprises the steps of (i) adding 50-95 wt% of monomer of copolymer obtained by mixing styrene-divinylbenzene, ethylvinylbenzene-divinylbenzene, styrene-divinylbenzene-acrylate or glycidylmethacrylate-divinylbenzene(the monomers are used in the same molecular ratios, respectively) in 5-8 times of dispersing solvent as total weight of the used monomers, 0.5-4 wt% of polymerization initiator, 3-50 wt% of stabilizer, and 0.001-0.02 wt% of adjuvant stabilizer, (ii) rapidly stirring the monomers at 10,000-20,000 RPM until polymerization reaches to 5-50 wt% based on total weight of synthesized polymer, and (iii) adding 0.001-1 wt% of stabilizer to the reaction product of the step(ii) in 3-4 portions at 1-60 min. intervals while slowly stirring at 400-700 RPM, so as to suspension polymerize the mixture, thereby synthesizing fine globular, granular poly(styrene-polydivinyl benzene) copolymer, poly(ethylene vinyl benzene)-poly(divinylbenzene) copolymer, poly(styrene)-poly(divinylbenzene)-poly(acrylate) copolymer, or poly(glycidyl methacrylate)-poly(divinylbenzene) copolymer having particle size of 1-110 micrometer.
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