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Electrospun polyamide-polyethylene glycol nanofibers for headspace solid-phase microextration
, Article Journal of Separation Science ; Vol. 37, issue. 14 , 2014 , pp. 1880-1886 ; ISSN: 16159306 ; Najarzadekan, H ; Roostaie, A ; Sharif University of Technology
Abstract
A solution of polyamide (PA) containing polyethylene glycol (PEG) as a side low-molecular-weight polymer was electrospun. After synthesizing the PA-PEG nanofibers, the constituent was subsequently removed (modified PA) and confirmed by Fourier transform infrared spectroscopy. The scanning electron microscopy images showed an average diameter of 640 and 148 nm for PA and PA-PEG coatings, respectively, while the latter coating structure was more homogeneous and porous. The extraction efficiencies of PA, PA-PEG, and the modified PA fiber coatings were assayed by headspace solid-phase microextraction of a number of chlorophenols from real water samples followed by their determination by gas...