A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose.

A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose. Research Abstract Details 

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A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose. Abstract Text:

Jonas Enebro,Dane Momcilovic,Matti Siika-Aho,Sigbritt Karlsson,Jonas Enebro,Dane Momcilovic,Matti Siika-Aho,Sigbritt Karlsson,Jonas Enebro,Dane Momcilovic,Matti Siika-Aho,Sigbritt Karlsson,

Two model sodium carboxymethyl celluloses (CMC) with similar monomer composition but with significant differences in the viscoelastic properties, that could not be assigned to variations in the average molar mass or molar mass distribution, were investigated with respect to the fraction of nonsubstituted cellulose segments in the polymers. The CMCs were hydrolyzed by a purified highly selective endoglucanase. The average molar mass and molar mass distribution of the enzyme products, as measured by size-exclusion chromatography with online multi-angle light scattering and refractive index detection (SEC/MALS/RI), revealed that the enzyme-catalyzed hydrolysis was more effective on one of the CMCs. To investigate whether this was due to a higher fraction of nonsubstituted cellulose segments in the polymer, the concentrations of nonsubstituted enzyme products, e.g., cellotetraose and cellopentaose, were measured by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). It was concluded that the two CMCs displayed significant differences in the fraction of nonsubstituted cellulose segments. Furthermore, the CMC with the strongest attractive intermolecular interactions, according to rheometry, also contained the highest fraction of nonsubstituted cellulose segments.

A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose. Publishing Authors By Initials

J Enebro,D Momcilovic,M Siika-Aho,S Karlsson,J Enebro,D Momcilovic,M Siika-Aho,S Karlsson,J Enebro,D Momcilovic,M Siika-Aho,S Karlsson,

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A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Biomacromolecules

VOLUME: 8

Page Numbers: 3253-7

Journal Abbreviation: Biomacromolecules

ISSN: 1525-7797

DAY: 1

MONTH: 09

YEAR: 2007

A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose. Information

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LANGUAGE: eng

NlmUniqueID: 100892849

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Grant and Affiliation Information for A new approach for studying correlations between the chemical structure and the rheological properties in carboxymethyl cellulose.

AFFILIATION: School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology (KTH), Stockholm, Sweden.

Country: United States

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MEDLINETA: Biomacromolecules

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