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Gel permeation chromatography of ethylene–propylene copolymerization products
Author(s) -
Ogawa Toshio,
Inaba Tadami
Publication year - 1977
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.1977.070211113
Subject(s) - copolymer , gel permeation chromatography , polypropylene , ethylene , calibration curve , molar mass distribution , materials science , polymer chemistry , calibration , chromatography , chemistry , organic chemistry , polymer , composite material , catalysis , mathematics , statistics , detection limit
A simple method to calculate average molecular weights and D (≡ M w / M n ) value from the GPC chromatogram of copolymerization products, especially for ethylene–propylene copolymerization products, was investigated by simulation technique. The method is based on the use of the calibration curve determined by the average ethylene content of the products. In addition to this method, the calibration curve prepared for polypropylene was also applied to determined the D value. Average molecular weights and D values were determined, with small errors, for narrow distribution samples with respect to molecular weight and chemical composition.