authors |
Freire, CSR; Silvestre, AJD; Neto, CP; Rocha, RMA |
nationality |
International |
journal |
CELLULOSE |
author keywords |
alkaline hydrolysis; cellulose esters; degree of substitution (DS); fatty acids; GC-MS |
keywords |
FATTY-ACID; ESTERIFICATION; DS |
abstract |
The determination of the degree of substitution (DS) of fatty acid cellulose esters, representing a broad range of substituents (C-6, C-12, C-18 and C-22), was performed by alkaline hydrolysis of the ester groups and the quantification of fatty acids by gas chromatography-mass spectrometry (GC-MS) as their trimethylsilyl derivatives. The method was optimized and compared with established techniques for the DS determination (elemental analysis and alkaline hydrolysis/titrimetry). The results demonstrated that alkaline hydrolysis/GC-MS is a rapid, reliable and powerful method for analysis of fatty acid cellulose esters, particularly when different acyl substituents are present. |
publisher |
SPRINGER |
issn |
0969-0239 |
year published |
2005 |
volume |
12 |
issue |
5 |
beginning page |
449 |
ending page |
458 |
digital object identifier (doi) |
10.1007/s10570-005-2203-2 |
web of science category |
Materials Science, Paper & Wood; Materials Science, Textiles; Polymer Science |
subject category |
Materials Science; Polymer Science |
unique article identifier |
WOS:000232663300001
|