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Findings from Sharif University of Technology Broaden Understanding of Polyethylenes (Electrospun polyamide-polyethylene glycol nanofibers for...

August 29, 2014



Findings from Sharif University of Technology Broaden Understanding of Polyethylenes (Electrospun polyamide-polyethylene glycol nanofibers for headspace solid-phase microextration)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Polyethylenes is now available. According to news reporting out of Tehran, Iran, by NewsRx editors, research stated, "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."

Our news journalists obtained a quote from the research from the Sharif University of Technology, "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 chromatography with mass spectrometry. To prepare the most appropriate coatings, the amounts and the flow rate of the electrospinning solution were investigated. Various extraction parameters, such as the salt content, desorption condition, extraction temperature, and time were optimized. The limits of detection of the method were in the range of 0.8-25 ng/L, while the RSDs at two concentration levels of 200 and 80 ng/L were between 2.1 and 12.2%."

According to the news editors, the research concluded: "The analysis of real water samples led to relative recoveries between 85 and 98% with a linearity of 8-1500 ng/L."

For more information on this research see: Electrospun polyamide-polyethylene glycol nanofibers for headspace solid-phase microextration. Journal of Separation Science, 2014;37(14):1880-1886. Journal of Separation Science can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Journal of Separation Science - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1615-9314)

Our news journalists report that additional information may be obtained by contacting H. Bagheri, Sharif Univ Technol, Dept. of Chem, Environm & Bioanalyt Labs, Tehran, Iran. Additional authors for this research include H. Najarzadekan and A. Roostaie (see also Polyethylenes).

Keywords for this news article include: Iran, Asia, Tehran, Alkenes, Polyenes, Nanofiber, Hydrocarbons, Nanotechnology, Organic Chemicals, Polyethylene Glycols, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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