PHOTO-INITIATED GRAFT POLYMERIZATION OF LAURYL METHACRYLATE AND COPOLYMERIZATION OF LAURYL ACRYLATE AND STEARYL METHACRYLATE ON PET TRACK-ETCHED MEMBRANES
Keywords:
TRACK MEMBRANES, GRAFTING POLYMERIZATION, MEMBRANE DISTILLATION, WATER PURIFICATION, POLYETHYLENE TEREPHTHALATEAbstract
This article presents the results of a study on the modification of track-etched membranes (TM) based on polyethylene terephthalate (PET) aimed at enhancing their hydrophobic properties and improving efficiency in membrane distillation (MD) processes. Particular attention was given to photo-initiated graft polymerization of lauryl methacrylate (LMA) as well as copolymerization of lauryl acrylate (LA) with stearyl methacrylate (SMA) on the surface of the membranes. The influence of key parameters, including monomer concentration, irradiation intensity, and ultraviolet exposure time, on the grafting degree and the formation of the modified surface layer was analyzed in detail. The modified membranes were characterized by measuring water contact angle, porosity, and chemical composition using spectroscopic and elemental analysis. The findings confirmed the effectiveness of the chosen modification methods and demonstrated the possibility of significantly improving membrane hydrophobicity. Such improvements enhance membrane selectivity, resistance to wetting, and operational stability under MD conditions, broadening prospects for practical application in desalination, wastewater treatment, and advanced water purification processes.
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