Determination of Residual Monomer in Polymer Emulsions by Rapid Distillation and Gas Chromatography.

Tweet, Orlando.; Miller, W. K.

doi:10.1021/ac60200a026

Cited by 20 publications

(3 citation statements)

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“…Mediante técnicas cromatógraficas de líquidos y gases se puede determinar la presencia de monómero residual en vasos grado alimenticio [7][8][9][10], así mismo se puede caracterizar por infrarrojo para corroborar la presencia de este monómero, el cual se espera que esté en cantidad menor a 1.0 ppm. Se ha reportado también la determinación de estireno residual en poliestireno utilizando técnicas espectrofotométricas en el rango del ultravioleta.…”

Section: E O'ucfu Dunclassified

Análisis de Monómero Residual en Envases de Poliestireno Grado Alimenticio

et al. 2012

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En el presente trabajo se realizó el análisis de estireno residual en vasos de poliestireno mediante espectroscopia infrarroja; así mismo, se determinaron las condiciones del análisis cromatográfico tanto de HPLC como de cromatografía de gases, para determinar la concentración de este monómero en vasos grado alimenticio. Una muestra de vasos de poliestireno se disolvió en acetona, se precipitó con metanol, el extracto concentrado fue analizado bajo determinadas condiciones de cromatografía de líquidos de alta resolución, así como cromatografía de gases. Se prepararon estándares de diferente concentración con el fin de determinar el límite de detección de cada técnica cromatográfica. Mediante HPLC se alcanzó una sensibilidad de 25 ppm, que es muy alta, por lo que este tipo de muestras no pueden ser analizadas con las condiciones cromatográficas del presente estudio. La concentración mínima detectada mediante cromatografía de gases fue 2.0 ppm, el monómero residual presente en muestras de vasos de poliestireno se detectó previamente de manera cualitativa por FT-IR y semicuantitativa por cromatografía degases.

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Section: E O'ucfu Dunclassified

Análisis de Monómero Residual en Envases de Poliestireno Grado Alimenticio

et al. 2012

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“…There are several injection methods currently used in GC monomer determinations. However, all of these techniques fall into two categories: direct injection and injection of the vapor above the polymer, or polymer solution (2). Direct injection of a polymer, or its precipitates, is perhaps the most common method.…”

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confidence: 99%

A direct injection gas‐liquid chromatographic method to monitor polymer melt devolatilization: Methyl methacrylate in poly(methyl methacrylate)

Edkins

Notorgiacomo

Biesenberger

1990

Polymer Engineering & Sci

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A new capillary gas chromatography method to monitor a residual monomer in a polymer is described. A short (5 m) crosslinked methyl silicone fused silica capillary column with flame ionization detection gave good separation efficiency and parts‐per‐million detection limits. Capillary gas‐liquid chromatography was superior to packed column analysis (SP 1000) in terms of both analytical utility and ease of use. This technique may prove useful for monitoring other monomer/polymer systems.

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“…Polarography has been used for the determination of acrylonitrile (3). The gas chromatographic determination of residual monomers in latex systems has been reported (2,(6)(7)(8).…”

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Determination of Residual Monomers and Other Volatile Components in Styrene Based Polymers by Gas Chromatography.

Shapras¹,

Claver²

1964

Anal. Chem.

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The minimum time required for complete diffusion of silicon was not evaluated. It was convenient in this laboratory to have the diffusion period cover between 16 and 20 hours, which was overnight, and the results of Tables I, II, and III represent these time periods.It is not believed that the addition of tartaric acid in the color development of silicon in this procedure is necessary because little or no phosphate is believed to ' diffuse into the sodium hydroxide portion. However, tartaric acid was added throughout these determinations as a safety feature.No study was made, at this time, to ascertain the maximum amounts of SiF4 that can be diffused and collected by the amounts of NaOH that are used throughout this procedure. Likewise, no study was undertaken at this time to determine silicon in organic materials; however, since fluoride is determined using diffusion procedures (11) in organics, it would seem likely that silicon in organosilicons known as silicones, silanes, or siloxanes could be determined by this procedure. LITERATURE CITED(1) A8TM Methods, "Chemical Analysis of Metals," p. 368 (1956).(2) Carlson, A. B., Banks, C. V., Anal.

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Determination of Residual Monomer in Polymer Emulsions by Rapid Distillation and Gas Chromatography.

Cited by 20 publications

References 4 publications

Análisis de Monómero Residual en Envases de Poliestireno Grado Alimenticio

Análisis de Monómero Residual en Envases de Poliestireno Grado Alimenticio

A direct injection gas‐liquid chromatographic method to monitor polymer melt devolatilization: Methyl methacrylate in poly(methyl methacrylate)

Determination of Residual Monomers and Other Volatile Components in Styrene Based Polymers by Gas Chromatography.

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