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Solution studies of cellulose tricarbanilates obtained in homogeneous phase
Author(s) -
Terbojevich M.,
Cosani A.,
Camilot M.,
Focher B.
Publication year - 1995
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.1995.070551206
Subject(s) - gel permeation chromatography , tetrahydrofuran , dimethylacetamide , cellulose , homogeneous , molar mass distribution , degree of polymerization , phase (matter) , polymerization , osmometer , polymer chemistry , elemental analysis , chemistry , materials science , analytical chemistry (journal) , chromatography , organic chemistry , polymer , solvent , thermodynamics , physics
Abstract A number of cellulose samples was submitted to homogeneous phase carbanilation in dimethylacetamide/LiCl. The process is quantitative and leads to a completely substituted product, as verified by elemental analysis and UV spectroscopy. Tricarbanilated samples were characterized by viscometric and light‐scattering measurements in tetrahydrofuran. Our results are in good agreement with those reported in the literature, concerning products obtained in the heterogeneous phase. Gel permeation chromatography was performed for evaluating the molecular weight distribution of the parent cellulose, using both universal and linear calibration. The chromatographic technique is not adequate for samples exhibiting a high degree of polymerization. © 1995 John Wiley & Sons, Inc.