Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/345954
Type: Artigo
Title: An alternative route to produce standards for gel permeation chromatography using nitroxide mediated polymerization
Author: Malere, C. P. R.
Lona, L. M. F.
Abstract: All over the world standards for Gel Permeation Chromatography (GPC) are produced using ionic polymerization. Standards are commercialized in a broad range of molecular weight and their dispersity (Ð) must be lower than 1.1. This work proposes the synthesis of polystyrene standards using Nitroxide Mediated Polymerization (NMP), an alternative technique to produce controlled polymers that is much more robust when compared to ionic polymerization. Standards with different ranges of molecular weights were obtained, all of them with very narrow molecular weight distribution (MWD) and dispersity (Ð) lower than 1.10. In order to do that, several combinations of different initiators were tested. Advanced GPC Triple Detector was used to obtain important properties, such as absolute number and weight average molecular weights, dispersity and intrinsic viscosity. The analytical method used in the characterization of the samples was in-house validated in terms of linearity, accuracy, precision, repeatability and robustness. The validation study demonstrated the quality of the measurements and ensured that the information obtained for a given analyte by the GPC technique is reliable
Subject: Polimerização
Country: Brasil
Editor: Associação Brasileira de Engenharia Química
Rights: Aberto
Identifier DOI: 10.1590/0104-6632.20170341s20150547
Address: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322017000100283
Date Issue: 2017
Appears in Collections:FEQ - Artigos e Outros Documentos

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