Please use this identifier to cite or link to this item:
Type: Artigo de evento
Title: Characterization Of A New Stationary Phase Based On Microwave Immobilized Polybutadiene On Titanium Oxide-modified Silica
Author: Morais L.S.R.
Jardim I.C.S.F.
Abstract: Titanium oxide-modified silica was prepared by reaction of silica with titanium tetrabutoxide and then was used as support in the preparation of stationary phases with self-immobilized polybutadiene (PBD) and PBD immobilized through microwave radiation. Chromatographic performance of the stationary phases was evaluated in terms of the efficiency (plates/m), asymmetry (A s), retention factor (k) and resolution (Rs) of two standard sample mixtures, one of then containing the basic compound N,N-dimethylaniline. A microwave irradiation of 30 min at 520 W gave the best efficiency (86,500 N m-1), greater than that of a 6-day self immobilized phase (69,500 N m-1). Self-immobilized stationary phases prepared with bare silica were also studied for comparison. These resulted in lower chromatographic performance, 43,800 N m-1, when compared to the self-immobilized phase prepared with titanized silica. © 2004 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.chroma.2004.09.044
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-17444370976.pdf171.18 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.