Preparation of a polyacrylonitrile/multi-walled carbon nanotubes composite by surface-initiated atom transfer radical polymerization on a stainless steel wire for solid-phase microextraction

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Minet, I (Author) Other; Hevesi, L (Author) Other; Manuel Azenha (Author) FCUP; Delhalle, J (Author) Other; Mekhalif, Z (Author) Other

Journal

Title: Journal of Chromatography A

Vol. 1217 No. 43

Pages: 2758-2767

ISSN: 0021-9673

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 53 Citations

Scopus - 58 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Physical sciences > Chemistry > Organic chemistry > Polymer chemistry ; Physical sciences > Chemistry > Analytical chemistry ; Physical sciences > Chemistry > Physical chemistry > Surface chemistry

Other information

Authenticus ID: P-003-7DZ

DOI: 10.1016/j.chroma.2010.02.030

Abstract (EN): We report on the fabrication and performances of a solid-phase microextraction (SPME) fiber based on a stainless steel wire coated with a covalently attached polyacrylonitrile (PAN)/multi-walled carbon nanotubes (MWCNTs) composite. This new coating is obtained by atom transfer radical polymerization (ATRP) of acrylonitrile mixed with MWCNTs. ATRP is initiated from 11-(2-bromo-2-methylpropionyloxy)-undecyl-phosphonic acid molecules grafted on the wire surface via the phosphonic acid group. The extraction performances of the fibers are assessed on different classes of compounds (polar, non-polar, aromatic, etc.) from water solutions by headspace extraction. The optimization of the parameters affecting the extraction efficiency of the target compounds was studied as well as the reproducibility and the repeatability of the fiber. The fibers sustain more than 200 extractions during which they remain chemically stable and maintain good performances (detection limits lower than 2 mu g/l, repeatability, etc.). Considering their robustness together with their easy and inexpensive fabrication, these fibers could constitute promising alternatives to existing products.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10