Results 251 to 260 of about 133,066 (344)
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, 2017
The size distributions of sulfur (S), vanadium (V), and nickel (Ni) compounds in four crude oils, two residues, and their saturate, aromatic, resin, and asphaltene (SARA) fractions were determined using gel permeation chromatography (GPC) coupled to ...
Germán Gascón +8 more
semanticscholar +1 more source
The size distributions of sulfur (S), vanadium (V), and nickel (Ni) compounds in four crude oils, two residues, and their saturate, aromatic, resin, and asphaltene (SARA) fractions were determined using gel permeation chromatography (GPC) coupled to ...
Germán Gascón +8 more
semanticscholar +1 more source
Journal of Agricultural and Food Chemistry, 2015
A simple analytical method was developed for the simultaneous analysis of 18 perfluorinated compounds (PFCs) in edible oil. The target compounds were extracted by acetonitrile, purified by gel permeation chromatography (GPC) and dispersive solid-phase ...
Lili Yang +9 more
semanticscholar +1 more source
A simple analytical method was developed for the simultaneous analysis of 18 perfluorinated compounds (PFCs) in edible oil. The target compounds were extracted by acetonitrile, purified by gel permeation chromatography (GPC) and dispersive solid-phase ...
Lili Yang +9 more
semanticscholar +1 more source
Gel Permeation Chromatography of Polyelectrolytes
Journal of Liquid Chromatography, 1981Abstract The mechanisms are discussed which control the GPC elution of ionic solutes, both the polyelectrolytes and the low molecular salts. The processes involved are quite general and valid in organic and in aqueous solvents. The conclusion is that gel permeation chromatography is a powerfull method to characterize poly-electrolytes; and it is shown ...
Rinaudo, M. +2 more
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Fluorinated gels for gel permeation chromatography
Die Makromolekulare Chemie, 1993AbstractThe aim of these investigations was the development of stationary phases for GPC compatible with fluorinated solvents. The properties of crosslinked copolymers of 4‐(2‐heptafluoropropoxy‐1, 2,2‐trifluoroethoxy)styrene (1) were investigated in dependence of the mode of synthesis. Divinylbenzene (DVB) was used as crosslinking agent.
Hans‐Jürgen Juhl, Walter Heitz
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Endeavour, 1984
Abstract Gel permeation chromatography is the most valuable single technique in the molecular weight characterisation of polymers. The power of this technique lies in its ability to give information on the whole molecular weight distribution. In Britain, the Polymer Supply and Characterisation Centre provides a GPC service for research workers in the
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Abstract Gel permeation chromatography is the most valuable single technique in the molecular weight characterisation of polymers. The power of this technique lies in its ability to give information on the whole molecular weight distribution. In Britain, the Polymer Supply and Characterisation Centre provides a GPC service for research workers in the
openaire +2 more sources
Gel permeation chromatography of polymers
Journal of Polymer Science: Polymer Symposia, 1975AbstractThe literature on gel permeation chromatography (GPC) is surveyed and briefly reviewed to provide a guide to some of the more important references, particularly those dealing with equipment and polymer molecular weight determination. A number of applications of GPC in the authors' laboratories are discussed in order to illustrate use of the GPC
J. F. Hooper +2 more
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Journal of the American Chemical Society, 2013
Poly(ionic liquid)s (PILs) are an important class of technologically relevant materials. However, characterization of well-defined polyionic materials remains a challenge.
Hongkun He +5 more
semanticscholar +1 more source
Poly(ionic liquid)s (PILs) are an important class of technologically relevant materials. However, characterization of well-defined polyionic materials remains a challenge.
Hongkun He +5 more
semanticscholar +1 more source
Journal of Chromatography A, 1976
Abstract An automated gel permeation chromatograph-low-angle laser light-scattering system capable of measuring the molecular-weight distribution of soluble polymers without the necessity of calibration is described. The automation system eliminates most of the tediousness associated with molecular-weight distribution measurement.
openaire +2 more sources
Abstract An automated gel permeation chromatograph-low-angle laser light-scattering system capable of measuring the molecular-weight distribution of soluble polymers without the necessity of calibration is described. The automation system eliminates most of the tediousness associated with molecular-weight distribution measurement.
openaire +2 more sources
Gel permeation chromatography of polyoxymethylene
Journal of Applied Polymer Science, 1974Gel permeation chromatography of polyoxymethylene has been studied using N,N-dimethylformamide as the solvent. Polyoxymethylene samples used here are a copolymer of tetraoxane with 1,3-dioxolane and a commercial polyoxymethylene whose molecular weight distributions are moderately broad.
Isao Ishigaki +3 more
openaire +2 more sources
, 2014
The size distribution of sulfur, vanadium, and nickel was determined for four crude oils and their distillation cuts using gel permeation chromatography (GPC) coupled to inductively coupled plasma high-resolution mass spectrometry (ICP HR MS).
Alain Desprez +5 more
semanticscholar +1 more source
The size distribution of sulfur, vanadium, and nickel was determined for four crude oils and their distillation cuts using gel permeation chromatography (GPC) coupled to inductively coupled plasma high-resolution mass spectrometry (ICP HR MS).
Alain Desprez +5 more
semanticscholar +1 more source