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

Autor: Vaca-Garcia, Carlos, Borredon, Elisabeth, Gaset, Antoine
Přispěvatelé: Institut National de la Recherche Agronomique - INRA (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Laboratoire de Chimie Agro-Industrielle (LCA), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Toulouse, Chimie Agro-Industrielle (CAI), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques-Institut National de la Recherche Agronomique (INRA), (OATAO), Open Archive Toulouse Archive Ouverte
Jazyk: angličtina
Rok vydání: 2001
Předmět:
Zdroj: Cellulose
Cellulose, Springer Verlag, 2001, vol.8 n°3., 225-231 available on : http://oatao.univ-toulouse.fr/31/2/Vaca-Garcia_31.pdf
ISSN: 1572-882X
0969-0239
Popis: International audience; 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%
Databáze: OpenAIRE
Externí odkaz: