Silica nanoparticles–nylon 6 composites: synthesis, characterization and potential use as sorbent
Autor
Reyes-Gallardo, E.M.
Lucena, Rafael
Cárdenas, Soledad
Editor
Royal Society of ChemistryFecha
2017Materia
Composite materialsNanoparticles
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Composite materials based on the combination of nanoparticles (NPs) and polymers have attracted much
attention in recent years thanks to their positive characteristics. In this article an easy, cheap and green
procedure for the synthesis of silica nanoparticles–nylon 6 composites is proposed. Several materials
comprising different NPs–polymer ratios have been synthesized and characterized. The evaluation of
their extraction performances indicated that the inclusion of NPs into the polymeric network increases
their superficial area, boosting their sorbent capacity, because the NPs modify the normal stacking of the
polymeric chains. Among the tested composite materials, the best one has been applied for the
dispersive micro-solid phase extraction of selected estrogens (estrone, b-estradiol and estriol) from
aqueous samples as a model analytical problem. The approach allows the determination of the target
compounds by LC-MS/MS at the low mg L 1 range with acceptable precision (better than 13.9%,
expressed as relative standard deviation). Finally, the potential use of the composite for the isolation of
the targets from more complex samples has been outlined.