Layer-by-layer coated imidazolium – Styrene copolymers fibers for improved headspace-solid phase microextraction analysis of aromatic compounds

David J.S. Patinha, Nellepalli Pothanagandhi, Kari Vijayakrishna, Armando J.D. Silvestre, Isabel M. Marrucho

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The design of poly(ionic liquids) (PILs) and their application as solid phase microextraction (SPME) fibers has been attracting enormous attention mainly due to the need for new SPME coating materials with improved analytical sensitivity. In this work, the tunability of PILs is explored by preparing different imidazolium monomers bearing benzyl, naphtylmethyl or pentyl pending groups that were subsequently co-polymerized, by reversible addition–fragmentation chain transfer (RAFT) polymerization with styrene. The obtained co-polymers showed excellent thermal stability up to 275 °C, with no melting point up to 250 °C. SPME fibers were prepared by an innovative approach based on layer-by-layer spray coating. The thin (<10 μm) SPME coatings were tested in GC-FID for the detection of volatile aromatic compounds such as benzene (B), toluene (T), ethylbenzene (E) and xylene (X) present in aqueous samples and the extraction parameters optimized. Superior results were obtained when comparing these LbL PILS-based SPME fibers with a commercial fiber composed of poly(dimethylsiloxane), with an increase in the detectable areas of 83%, 69%, 57% and 58% for B, T, E and X, respectively. Low relative standard deviations were obtained for the same fiber (< 5.6%) and also for different fibers (< 9.8%). Furthermore, a spiked soil sample was used to mimic a real contaminated soil sample and excellent recovery results, ranging from 67.0% to 102.2%, were obtained.

Original languageEnglish
Pages (from-to)93-100
Number of pages8
JournalReactive and Functional Polymers
Volume125
DOIs
Publication statusPublished - 1 Apr 2018

Fingerprint

Solid Phase Microextraction
Aromatic compounds
Styrene
Copolymers
Fibers
Ionic Liquids
coating
Ionic liquids
Soil
Coatings
Bearings (structural)
Xylenes
Soils
Toluene
Benzene
Parameter extraction
Ethylbenzene
Polymerization
Freezing
xylene

Keywords

  • BTEX extraction
  • Layer-by-layer
  • Poly(ionic liquids)
  • Solid phase microextraction
  • SPME
  • Spray coating

Cite this

Patinha, David J.S. ; Pothanagandhi, Nellepalli ; Vijayakrishna, Kari ; Silvestre, Armando J.D. ; Marrucho, Isabel M. / Layer-by-layer coated imidazolium – Styrene copolymers fibers for improved headspace-solid phase microextraction analysis of aromatic compounds. In: Reactive and Functional Polymers. 2018 ; Vol. 125. pp. 93-100.
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Layer-by-layer coated imidazolium – Styrene copolymers fibers for improved headspace-solid phase microextraction analysis of aromatic compounds. / Patinha, David J.S.; Pothanagandhi, Nellepalli; Vijayakrishna, Kari; Silvestre, Armando J.D.; Marrucho, Isabel M.

In: Reactive and Functional Polymers, Vol. 125, 01.04.2018, p. 93-100.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Layer-by-layer coated imidazolium – Styrene copolymers fibers for improved headspace-solid phase microextraction analysis of aromatic compounds

AU - Patinha, David J.S.

AU - Pothanagandhi, Nellepalli

AU - Vijayakrishna, Kari

AU - Silvestre, Armando J.D.

AU - Marrucho, Isabel M.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - The design of poly(ionic liquids) (PILs) and their application as solid phase microextraction (SPME) fibers has been attracting enormous attention mainly due to the need for new SPME coating materials with improved analytical sensitivity. In this work, the tunability of PILs is explored by preparing different imidazolium monomers bearing benzyl, naphtylmethyl or pentyl pending groups that were subsequently co-polymerized, by reversible addition–fragmentation chain transfer (RAFT) polymerization with styrene. The obtained co-polymers showed excellent thermal stability up to 275 °C, with no melting point up to 250 °C. SPME fibers were prepared by an innovative approach based on layer-by-layer spray coating. The thin (<10 μm) SPME coatings were tested in GC-FID for the detection of volatile aromatic compounds such as benzene (B), toluene (T), ethylbenzene (E) and xylene (X) present in aqueous samples and the extraction parameters optimized. Superior results were obtained when comparing these LbL PILS-based SPME fibers with a commercial fiber composed of poly(dimethylsiloxane), with an increase in the detectable areas of 83%, 69%, 57% and 58% for B, T, E and X, respectively. Low relative standard deviations were obtained for the same fiber (< 5.6%) and also for different fibers (< 9.8%). Furthermore, a spiked soil sample was used to mimic a real contaminated soil sample and excellent recovery results, ranging from 67.0% to 102.2%, were obtained.

AB - The design of poly(ionic liquids) (PILs) and their application as solid phase microextraction (SPME) fibers has been attracting enormous attention mainly due to the need for new SPME coating materials with improved analytical sensitivity. In this work, the tunability of PILs is explored by preparing different imidazolium monomers bearing benzyl, naphtylmethyl or pentyl pending groups that were subsequently co-polymerized, by reversible addition–fragmentation chain transfer (RAFT) polymerization with styrene. The obtained co-polymers showed excellent thermal stability up to 275 °C, with no melting point up to 250 °C. SPME fibers were prepared by an innovative approach based on layer-by-layer spray coating. The thin (<10 μm) SPME coatings were tested in GC-FID for the detection of volatile aromatic compounds such as benzene (B), toluene (T), ethylbenzene (E) and xylene (X) present in aqueous samples and the extraction parameters optimized. Superior results were obtained when comparing these LbL PILS-based SPME fibers with a commercial fiber composed of poly(dimethylsiloxane), with an increase in the detectable areas of 83%, 69%, 57% and 58% for B, T, E and X, respectively. Low relative standard deviations were obtained for the same fiber (< 5.6%) and also for different fibers (< 9.8%). Furthermore, a spiked soil sample was used to mimic a real contaminated soil sample and excellent recovery results, ranging from 67.0% to 102.2%, were obtained.

KW - BTEX extraction

KW - Layer-by-layer

KW - Poly(ionic liquids)

KW - Solid phase microextraction

KW - SPME

KW - Spray coating

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DO - 10.1016/j.reactfunctpolym.2018.02.010

M3 - Article

VL - 125

SP - 93

EP - 100

JO - Reactive & Functional Polymers

JF - Reactive & Functional Polymers

SN - 1381-5148

ER -