The oxidation of PET track-etched membranes by hydrogen peroxide as an effective method to increase efficiency of UV-induced graft polymerization

  • Il'ya Korolkov L.N. Gumilyov Eurasian National University, Astana
  • Abzal Taltenov L.N. Gumilyov Eurasian National University, Astana
  • Anastassiya Mashentseva L.N. Gumilyov Eurasian National University, Astana
  • Olgun Guven Hacettepe University, Ankara
Keywords: track-etched membranes, poly(ethylene terephthalate), oxidation, graft polymerization, acrylic acid, ESR, modification of PET TeMs

Abstract

In this article, we report on functionalization of track-etched membrane based on poly(ethylene terephthalate) (PET TeMs) oxidized by advanced oxidation  systems and by grafting of acrylic acid using photochemical initiation technique for the purpose of increasing functionality thus expanding its practical application. Among advanced oxidation processes (H2O2/UV) system had been chosen to introduce maximum concentration of carboxylic acid groups. Benzophenone (BP) photo-initiator was first immobilized on the surfaces of cylindrical pores which were later filled with aq. acrylic acid solution. UV-irradiation from both sides of PET TeMs has led to the formation of grafted poly(acrylic acid) (PAA) chains inside the  membrane nanochannels. Effect of oxygen-rich surface of PET TeMs on BP adsorption and subsequent process of photo-induced graft polymerization of acrylic acid (AA) were studied by ESR. The surface of oxidized and AA grafted PET TeMs was characterized by UV-vis, ATR-FTIR, XPS spectroscopies and by SEM. 

Author Biographies

Il'ya Korolkov, L.N. Gumilyov Eurasian National University, Astana
Institute of Nuclear Physics, Almaty
Anastassiya Mashentseva, L.N. Gumilyov Eurasian National University, Astana
Institute of Nuclear Physics, Almaty

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Published
2015-12-30
How to Cite
Korolkov, I., Taltenov, A., Mashentseva, A., & Guven, O. (2015). The oxidation of PET track-etched membranes by hydrogen peroxide as an effective method to increase efficiency of UV-induced graft polymerization. Chemical Bulletin of Kazakh National University, (4), 30-38. https://doi.org/https://doi.org/10.15328/cb624
Section
Organic and Polymers Chemistry