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gel permeation chromatography

   Also found in: Acronyms, Wikipedia 0.01 sec.
gel permeation chromatography [¦jel ‚pər·mē′ā·shən ‚krō·mə′täg·rə·fē]
(analytical chemistry)
Analysis by chromatography in which the stationary phase consists of beads of porous polymeric material such as a cross-linked dextran carbohydrate derivative sold under the trade name Sephadex; the moving phase is a liquid.


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The gel permeation chromatography (GPC) and shear rheological tests are used to evaluate the parameters that are used to characterize the molecular structure of the modified HDPEs.
Tests conducted include nuclear magnetic resonance (NMR) for molecular structure; gas chromatography (GC) for oligomer and residue monomer/solvent; gel permeation chromatography (GPC) for molecular weight distribution; and inductively coupled plasma--atomic emission spectroscopy (ICP-AES) for residue metal contents.
A NEW photodiode array (PDA) detector for the TDAmax gel permeation chromatography system from Viscotek, a Malvern company, provides polymer scientists with a powerful and flexible tool for the rapid analysis of multi-component matrices.
 
 
 
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