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Determination of Intermolecular Acetyl Distribution of Cellulose Triacetate by Reversed Phase High Performance Liquid Chromatography
Author(s) -
Asai Tanemi,
Shimamoto Shu,
Shibata Tohru,
Kawai Tadatomo,
Teramachi Shinya
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651002
Subject(s) - cellulose triacetate , chromatography , fractionation , chloroform , elution , chemistry , solvent , silica gel , intermolecular force , phase (matter) , methanol , cellulose , ternary operation , analytical chemistry (journal) , organic chemistry , molecule , computer science , programming language
The chromatographic method for the determination of the intermolecular acetyl distribution of cellulose triacetate (CTA) was established; the key point of the method is a gradient elution by gradually changing the solvent composition of the ternary mixture of chloroform, methanol, and water on a phenyl‐bonded silica gel stationary phase. A positive correlation between the retention time and the degree of acetyl substitution was observed under the established chromatographic conditions. The validity of the elution peak width as the measure of intermolecular acetyl distribution was confirmed by the co‐injection and fractionation experiments and the comparison of a peak width with a statistically estimated distribution.