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Molecules 2017, 22(11), 1985; doi:10.3390/molecules22111985

Characterization of Non-Derivatized Cellulose Samples by Size Exclusion Chromatography in Tetrabutylammonium Fluoride/Dimethylsulfoxide (TBAF/DMSO)

1
Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, 31030 Toulouse, France
2
Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, INP-EI PURPAN, 31062 Toulouse, France
*
Author to whom correspondence should be addressed.
Received: 28 September 2017 / Revised: 13 November 2017 / Accepted: 15 November 2017 / Published: 16 November 2017
(This article belongs to the Special Issue Natural Polymers and Biopolymers)
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Abstract

This paper deals with the use of tetrabutylammonium fluoride/dimethylsulfoxide (TBAF/DMSO) to characterize the molar mass distribution of non-derivatized cellulosic samples by size exclusion chromatography (SEC). Different cellulose samples with various average degree of polymerization (DP) were first solubilized in this solvent system, with increasing TBAF rates, and then analyzed by SEC coupled to a refractive index detector (RID), using DMSO as mobile phase. The Molar Masses (MM) obtained by conventional calibration were then discussed and compared with suppliers’ data and MM determined by viscosimetry measurements. By this non-classic method, molar mass of low DP samples (Avicel® and cotton fibers) have been determined. For high DP samples (α-cellulose and Vitacel®), dissolution with TBAF concentration of 10 mg/mL involved elution of cellulose aggregates in the exclusion volume, related to an incomplete dissolution or the dilution of TBAF molecules in elution solvent, preventing the correct evaluation of their molar mass. View Full-Text
Keywords: cellulose; molar mass; SEC analysis; conventional calibration cellulose; molar mass; SEC analysis; conventional calibration
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MDPI and ACS Style

Rebière, J.; Rouilly, A.; Durrieu, V.; Violleau, F. Characterization of Non-Derivatized Cellulose Samples by Size Exclusion Chromatography in Tetrabutylammonium Fluoride/Dimethylsulfoxide (TBAF/DMSO). Molecules 2017, 22, 1985.

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