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Molecular weight distribution of a polyester
Author(s) -
Hansen Charles M.,
Sather Glenn A.
Publication year - 1964
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.1964.070080602
Subject(s) - polyester , fractionation , polymer , melting point , molar mass distribution , solvent , cyclohexane , materials science , polymer chemistry , chromatography , chemical engineering , chemistry , organic chemistry , composite material , engineering
Combined solvent composition and column temperature gradients were employed to effect the efficient fractionation of a polyester into several molecular weight fractions in about 16 hr. Mixtures of methyl ethyl ketone and cyclohexane were used as eluents for the fractionation which was conducted in a copper column packed with glass beads. In previously reported polymer fractionations with solvent and temperature gradients the temperatures at all points in the column have been either above or below the melting point of the polymer. This study demonstrates that hexanediol–succinic acid polyester may be efficiently fractionated by using a column temperature range which brackets the melting point of the polymer.