Novel PEGylated pH-sensitive polymeric hollow microspheres

Panayiotis Bilalis, Nikos Boukos, George C. Kordas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Novel PEGylated pH-sensitive poly[methacrylic acid-co-poly(ethylene glycol) methyl ether methacrylate] [P(MAA-co-PEGMA)] hollow microspheres were synthesized by a two-stage distillation precipitation polymerization. PMAA@P(MAA-co-PEGMA) core shell microspheres were synthesized by the second-stage polymerization of MAA and PEGMA, using the N,N′- methylenebisacrylamide (MBAAm) as crosslinker in the presence of non-crosslinked PMAA microspheres. The cavity was formed by selective removal of PMAA core in ethanol. The resulted PEGylated hollow microspheres were characterized with Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FT-IR). The shrink and swelling behavior under different pH was studied by Dynamic Light Scattering (DLS).

Original languageEnglish (US)
Pages (from-to)180-183
Number of pages4
JournalMaterials Letters
Issue number1
StatePublished - Jan 15 2012
Externally publishedYes


  • Hollow microspheres
  • PEG
  • PEGylated
  • PMAA
  • Polymer
  • pH-sensitive

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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