ISO 21400:2018

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Pulp — Determination of cellulose nanocrystal sulfur and sulfate half-ester content

Published By	Publication Date	Number of Pages
ISO	2018-12	34

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Categories: 85.040 - Pulps, ISO

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Description

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:

a) with all monovalent counterions (particularly hydronium and sodium cations);

b) which are either in the never-dried state in aqueous suspension, or have been redispersed from a dried form; and

c) 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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	2018-12
Pages Count	34
Language	English
Edition	1
File Size	1.7 MB
ICS Codes	85.040 - Pulps

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ISO 21400:2018

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