Synthesis and characterization of monodisperse-porous, zwitterionic microbeads

KİBAR G., Tuncel A.

POLYMER BULLETIN, vol.73, no.7, pp.1939-1950, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 7
  • Publication Date: 2016
  • Doi Number: 10.1007/s00289-015-1586-y
  • Journal Name: POLYMER BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1939-1950
  • Hacettepe University Affiliated: Yes

Abstract

Zwitterionic, monodisperse-porous polymer beads were newly synthesized using a hydrophilic acrylic crosslinker (glycerol dimethacrylate, GDMA) or a hydrophobic one (ethylene dimethacrylate) including a zwitterionic functional monomer sulfopropyl-2-vinylpyridinium hydroxide (SVP) in a modified-staged shape template polymerization. The effects of monomer/seed latex ratio and diluent/seed latex ratio on the particle size, mean pore size, pore size distribution and specific surface area of the poly(1-(3-sulfopropyl)-2-vinylpyridinium hydroxide-co-glycerol dimethacrylate) poly(SVP-co-GDMA) and poly(1-(3-sulfopropyl)-2-vinylpyridinium hydroxide-co-ethylene glycerol dimethacrylate) poly(SVP-co-EDMA) microbeads were investigated. For both types of microbeads, the mean size decreased with decreasing monomer/seed latex ratio and decreasing diluent/seed latex ratio. Almost tenfold higher specific surface area was achieved using a hydrophobic crosslinking agent (EDMA) with respect to the hydrophilic one. Poly(SVP-co-GDMA) microbeads were satisfactorily used as a stationary phase in HILIC mode for the isocratic separation of polar organics with the plate heights up to 124 microns.