Publicaciones 2011-2020

@article{RN406,
title = {Synthesis and Characterization of Poly (Ionic Liquid) Derivatives of N -Alkyl Quaternized Poly(4-Vinylpyridine)},
author = { X. Briones and R.A. Tapia and P.R. Campodonico and M. Urz\'{u}a and A. Leiva and R. Contreras and J. Gonz\'{a}lez-Navarrete},
url = {/brokenurl#<Go to ISI>://WOS:000429499900008},
doi = {10.1016/j.reactfunctpolym.2018.01.003},
issn = {1381-5148},
year = {2018},
date = {2018-01-01},
journal = {Reactive & Functional Polymers},
volume = {124},
pages = {64-71},
abstract = {The main motivation of this work is to obtain poly (ionic liquids) (PILs) derived from poly (4-vinyl pyridine) of different hydrophobic character containing BF4-, PF6-, (CF3SO2)(2) N- and CF3SO3- as counterions. PILs were synthesized from N -alkyl quaternized poly(4-vinylpyridine) P-4VP(+) -CnBr- with different alkyl chain length},
keywords = {bromide, carbon, chromium chromium, composite, liquid), liquid)s, removal, retention, salts, separation, water},
pubstate = {published},
tppubtype = {article}
}

@article{RN277,
title = {Adsorption of as (V) by Poly (N-Octyl-4-Vinylpyridinium) Bromide: Determination of as (V) by Direct Measurement of Fluorescence on the Solid Phase},
author = { J. Gonz\'{a}lez-Navarrete and M.I. Toral and A. Leiva and M. Yazdani-Pedram and H. Rios and X. Briones and M. Urz\'{u}a},
url = {/brokenurl#<Go to ISI>://WOS:000390510200015},
doi = {10.1016/j.reactfunctpolym.2016.10.011},
issn = {1381-5148},
year = {2016},
date = {2016-01-01},
journal = {Reactive & Functional Polymers},
volume = {109},
pages = {112-119},
publisher = {2016 Elsevier B.V.},
abstract = {Adsorption of As (V) by poly (N-octyl-4-vinylpyridinium) bromide (P4VPyC8), used as solid phase, was studied. Determination of As (V) was carried out by direct measurement of the fluorescence intensity on the solid phase. Adsorption variables were optimized for obtaining optimum values of pH and agitation time, where pH 9.0 and 60 min were established as optimum values. The adsorption of arsenic (V) was characterized by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. It was found that the fluorescence of the solid phase increases as the concentration of arsenic increases. Linearity was observed in the concentration range 6.80 to 90.0 mu g L-1. The detection limit for determination of As (V) by this method was 2.24 mu g L-1 and the relative standard deviation (RSD) was 1.72%. The amount of retained As (V) was 0.154 mg/g of solid phase. The determination of As (V) in a sample of tap water by this method was well compared with the value reported by an external certified laboratory. Therefore, the method of analysis proposed here could be used as a screening methodology for monitoring the fulfillment of the norm for arsenic concentration in tap water.},
keywords = {adsorption, arsenate, arsenic arsenic, atomic-absorption-spectrometry, carbon drinking-water, extraction, fluorescence, heavy-metal ions, nanotubes, performance phase, preconcentration, removal, samples, solid toxic water},
pubstate = {published},
tppubtype = {article}
}