BS ISO 21400:2018 Pulp. Determination of cellulose nanocrystal sulfur and sulfate half-ester content

BS ISO 21400:2018

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

Status : Current   Published : January 2019

Format
PDF

Format
HARDCOPY



What is this standard about?

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.




Standard NumberBS ISO 21400:2018
TitlePulp. Determination of cellulose nanocrystal sulfur and sulfate half-ester content
StatusCurrent
Publication Date14 January 2019
Normative References(Required to achieve compliance to this standard)ISO/TS 80004-6, ISO 3696, ISO 14644-1, ISO/TS 80004-1, ISO/TS 80004-2
Informative References(Provided for Information)ISO 11885:2007, ISO 14720-2:2013, ISO/TS 20477:2017, ISO/TR 24498:2006
International RelationshipsISO 21400:2018
DescriptorsSulfates, Sulfur, Cellulose, Determination of content, Pulp
ICS85.040
Title in FrenchPâte. Détermination de la teneur en soufre et en demi-ester de sulfate des nanocristaux de cellulose
CommitteePAI/11
ISBN978 0 580 94399 7
PublisherBSI
FormatA4
DeliveryYes
Pages36
File Size1.061 MB
Price£214.00


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