Pulp. Determination of cellulose nanocrystal sulfur and sulfate half-ester content
This document specifies procedures for the laboratory determination of the total elemental sulfur and the sulfate half-ester content of cellulose nanocrystals (CNCs) by inductively coupled plasma-optical emission spectroscopy and conductometric titration, respectively, including sample preparation, measurement methods and data analysis.
This document is applicable to the characterization of CNCs:
with all monovalent counterions (particularly hydronium and sodium cations);
which are either in the never-dried state in aqueous suspension, or have been redispersed from a dried form; and
which have been extracted from any naturally occurring cellulose source using a range of sulfuric acid hydrolysis conditions, or have been sulfated post-hydrolysis using sulfuric acid.
| SDO | BSI: British Standards Institution |
| Document Number | ISO 21400 |
| Publication Date | Jan. 14, 2019 |
| Language | en - English |
| Page Count | |
| Revision Level | |
| Supercedes | |
| Committee | PAI/11 |
Failed to load document history.
| Publish Date | Document Id | Type | View |
|---|