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Type: Artigo de evento
Title: Chromatographic Evaluation Of Self-immobilized Stationary Phases For Reversed-phase Liquid Chromatography
Author: Bottoli C.B.G.
Collins K.E.
Collins C.H.
Abstract: The preparation of stationary phases for HPLC using polymers deposited on silica usually includes an immobilization step involving cross-linking by free radicals induced by ionizing radiation or by other radical initiators. The present paper reports changes which occur at ambient temperature in the character of poly(methyloctylsiloxane) deposited on porous silica particles as a function of the time interval between particle loading and column packing. Column performance and retention factors increase with time and these changes are attributed to rearrangement (self-assembly) which result in "self-immobilization" of the polymer molecules on the silica surface. © 2002 Elsevier Science B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/S0021-9673(02)01535-2
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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