Graft Polymerization of Allylamine for the Modification of PET Track-Etched Membrane

Authors

DOI:

https://doi.org/10.31489/2959-0663/3-25-3

Keywords:

track-etched membrane, poly(ethylene terephthalate), photo-induced graft polymerization, allylamine, CO2 capture, UV irradiation, surface functionalization, porous structure, polymeric membranes, modification

Abstract

Track-etched membranes (TMs), characterized by their precisely controlled pore size, geometry, and distribution, offer a promising platform for the development of advanced membrane systems and serve as model membranes for testing and optimizing surface modification techniques. This study presents a perspective modification of poly(ethylene terephthalate) track-etched membranes (PET TM) based on photo-induced graft polymerization of allylamine (AlAm) to introduce primary amine groups on the membrane surface. The polymerization process was optimized by evaluating key parameters, including reaction time, monomer concentration, solvent, and distance from UV-lamp. Optimal conditions for photoinduced graft polymerization were found: grafting time 60 minutes, AlAm monomer concentration 50 %, 2-propanol as a solvent and distance to UV lamp 10 cm. These parameters allowed effective modification of the polymer while maintaining the integrity of the membrane porous structure. The modified membranes were characterized using SEM-EDX, ATR FTIR, and UV-spectroscopy. The results demonstrate the successful fabrication of membranes with a high amino group content (up to 10.6±0.3 µmol/g) while preserving their porous structure. This functionalization enhances the practical potential for the environment and biomedical fields.

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Scheme of modification of PET TM

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Published

2025-09-21

How to Cite

Shakayeva, A. K., Omertasov, D. D., Zhatkanbayeva, Z. K., Zhumazhanova, A. T., Zdorovets, M. V., & Korolkov, I. V. (2025). Graft Polymerization of Allylamine for the Modification of PET Track-Etched Membrane. EURASIAN JOURNAL OF CHEMISTRY, 30(3(119), 85–92. https://doi.org/10.31489/2959-0663/3-25-3

Issue

Section

МODIFICATION AND DEVELOPMENT OF NEW TYPES OF TEMs