UV-induced graft polymerization of acrylic acid in the sub-micronchannels of oxidized PET track-etched membrane

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:365

Article

Korolkov, Ilya V.^1,2  Mashentseva, Anastassiya A.^1,2  Guven, Olgun³  Taltenov, Abzal A.¹ 

[1] LN Gumilyov Eurasian Natl Univ, Astana 010008, Kazakhstan

[2] Inst Nucl Phys Republ Kazakhstan, Alma Ata 050032, Kazakhstan

[3] Hacettepe Univ, Dept Chem, TR-06800 Ankara, Turkey

关键词: Track-etched membranes;    Poly(ethylene terephthalate);    Oxidation;    Graft polymerization;    Acrylic acid;   

DOI  :  10.1016/j.nimb.2015.07.057

来源: Elsevier

【 摘 要 】

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 sub-micronchannels. 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. (C) 2015 Elsevier B.V. All rights reserved.

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