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Use of an oligomer as an internal standard in gel permeation chromatography
Author(s) -
Patel G. N.,
Stejny J.
Publication year - 1974
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1974.070180715
Subject(s) - gel permeation chromatography , oligomer , chromatography , elution , permeation , solvent , chemistry , decane , polyethylene , polymer , volume (thermodynamics) , materials science , analytical chemistry (journal) , polymer chemistry , organic chemistry , membrane , thermodynamics , biochemistry , physics
The application of an oligomer as an internal standard in gel permeation chromatography was studied on narrow low molecular weight fractions of linear polyethylene using n ‐decane as the standard. A Waters gel permeation chromatograph was run continuously at 130°C with 0 ‐dichlorobenzene as solvent. It has been found that the values of the elution volume of given samples vary with time and that a simple correction using n ‐decane as an internal standard reduces the inaccuracy from the original 6% to less than 1%. The corrected elution volumes remain reproducible over a period of several months so that frequent calibration is eliminated. The use of the oligomer chemically similar to the polymer samples gives a much better result than the use of low molecular weight impurity as the standard.