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Determination of the degree of substitution (DS) of mixed cellulose esters by elemental analysis

Vaca-Garcia, Carlos and Borredon, Elisabeth and Gaset, Antoine Determination of the degree of substitution (DS) of mixed cellulose esters by elemental analysis. (2001) Cellulose, vol.8 (n°3). pp. 225-231. ISSN 1572-882X

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Official URL: http://dx.doi.org/10.1023/A:1013133921626

Abstract

Equations for transforming the results of elemental analysis (EA) into degree of substitution (DS) values for aliphatic cellulose esters were developed. The equations allow to determine the DS of cellulose derivatives bearing not only one but also two different acyl substituents. Error transmission studies revealed that the accuracy of the DS-values for a pure sample depends on both the number of carbon atoms in the substituents and on the uncertainty of the EA, especially from the hydrogen content. This method provides accurate DS-values (± 0.10 in most cases) if H-content determinations are within ± 0.1%

Item Type:Article
Additional Information:The original publication is available on http://www.springerlink.com/content/100153/?p=b8f56ca5322a4602b3615038165f6852&pi=0
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
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Deposited By:Carlos VACA GARCIA

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