Please use this identifier to cite or link to this item:
Type: Artigo de evento
Title: Influence Of Air On Polybutadiene Used In The Preparation Of Stationary Phases For High-performance Liquid Chromatography
Author: Lopes N.P.
Collins K.E.
Jardim I.C.S.F.
Abstract: A 100ml bottle of polybutadiene, PBD, was repeatedly exposed to air over a period of 6 months. Samples were taken at time zero (PBD-0), after 3 months (PBD-3) and 6 months (PBD-6). These samples were sorbed onto HPLC silica by an open-air solution-evaporation procedure, which involved exposure to the atmosphere for 6 days. Portions of the three sets of samples were used to compare self-immobilization and the effects of 100°C thermal treatments in air or nitrogen on HPLC performance of the resulting phases. It is concluded that self-immobilization is enhanced by prior exposure of sorbed PBD to air and subsequent heating at 100°C further enhances column performance. The best performance (105platesm-1) resulted from 4h heating of PBD-6 material in nitrogen. © 2004 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.chroma.2003.12.035
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-1242338060.pdf133.31 kBAdobe PDFView/Open

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