31 KB510 KB30 KB199820252005Krajnc, PeterPulko, Irenaštevilka:3letnik:529 stranistr. 215-223ISSN:1318-0207COBISSID:9868566URN:URN:NBN:SI:doc-BECT6PZ3enSlovensko kemijsko društvoActa chimica slovenicaakrilatiemulzijska polimerizacijanosilcipolimeriporazdelitev velikosti delcevInfluence of crosslinker and monomer ratio on bead size distribution, swelling and polymer network flexibility of 4-nitrophenylacrylate polymer supports|Sphere shaped polymer supports with styrene and 4-nitrophenylacrylate as monomers and divinylbenzene (DVB) or ethyleneglycoldimethacrylate (EGDMA) as crosslinkers were prepared by free radical polymerization in suspension medium. Ratio of monomers as well as the crosslinking degree varied in order to test the influences on head size distribution, swelling and polymer network flexibility. The amount of crosslinker had an effect on bead size, average bead diameters being between 10 ?$/mu$?m and 35 ?$/mu$?m when 5% of crosslinker was applied and between 35 ?$/mu$? and 55 ?$/mu$? when 20% was used. The crosslinking degree also affected swelling in dichloromethane, water, methanol, toluene and acetonitrile, being more intense with lower concentrations of DVB or EGDMA. The flexibility of polymer networkwas investigated using reactions with 1,8-diaminooctane. High degrees of additional crosslinking was observed, namely between 58 and 95% indicating high flexibility of polymer networkTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaSlovensko kemijsko društvo