Microemulsion photopolymerization of methacrylates stabilized with sodium dodecyl sulfate and poly(N-acetylethylenimine) macromonomers


David G., Ozer F., Simionescu B., Zareie H., Piskin E.

EUROPEAN POLYMER JOURNAL, cilt.38, ss.73-78, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 38 Konu: 1
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0014-3057(01)00162-8
  • Dergi Adı: EUROPEAN POLYMER JOURNAL
  • Sayfa Sayıları: ss.73-78

Özet

Methyl methacrylate and butyl methacrylate were polymerized in oil-in-water microemulsions that were stabilized by sodium dodecyl sulphate (SIDS). A poly(N-acetylethylenimine) (PNAEI) macromer was also included in the recipe, as a cosurfactant and a comonomer. Polymerizations were initiated by UV-irradiation. The average diameters of latex particles, obtained by STM, were in the range of 17-200 nm. The experimental data evidenced that the particle size was mainly dependent on the SDS/PNAEI ratio. Polymerization yields were around 75-85%. The synthesized copolymers have viscosity average molecular weights in the range of 2.1-2.4 x 10(6) and glass transition temperatures of 38.0-43.5 degreesC, lower than those obtained without using PNAEI. The investigation by means of FTIR and H-1-NMR techniques revealed that PNAEI was incorporated into the nanoparticles. (C) 2001 Elsevier Science Ltd. All rights reserved.