ISO/TS 21346:2021
Nanotechnologies — Characterization of individualized cellulose nanofibril samples
This document specifies characteristics to be measured of individualized cellulose nanofibril (iCNF) samples in suspension and powder forms and their measurement methods. In addition, it provides sample preparation, measurement and data analysis procedures.
This document does not apply to the characterization of iCNFs that have been modified after they are manufactured.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Characteristics to be measured of iCNF samples and their measurement methods
5.1 General
5.2 Characteristics required to be measured or identified
5.2.1 Morphology and size
5.2.2 Total dry matter content
5.2.3 Crystal structure
5.2.4 Optical transmittance
5.2.5 Surface functional groups: Types
5.2.6 Surface functional groups: Content
5.2.7 Viscosity
5.3 Characteristics recommended to be measured or identified
5.3.1 Width and height
5.3.2 Length
5.3.3 Molecular weight distribution
5.3.4 Supernatant dry matter ratio
5.3.5 Crystallinity
5.3.6 Thermal stability
5.3.7 Ash content
5.3.8 Acid-soluble metal content
5.3.9 Organic contaminant content
5.3.10 Acetone-soluble matter content
5.3.11 Constituent sugar content
6 Reporting
Annex A (informative) Protocols for sample preparation, measurement and data analysis
Annex B (informative) Description of individualized cellulose nanofibril (iCNF)
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Characteristics to be measured of iCNF samples and their measurement methods
5.1 General
5.2 Characteristics required to be measured or identified
5.2.1 Morphology and size
5.2.2 Total dry matter content
5.2.3 Crystal structure
5.2.4 Optical transmittance
5.2.5 Surface functional groups: Types
5.2.6 Surface functional groups: Content
5.2.7 Viscosity
5.3 Characteristics recommended to be measured or identified
5.3.1 Width and height
5.3.2 Length
5.3.3 Molecular weight distribution
5.3.4 Supernatant dry matter ratio
5.3.5 Crystallinity
5.3.6 Thermal stability
5.3.7 Ash content
5.3.8 Acid-soluble metal content
5.3.9 Organic contaminant content
5.3.10 Acetone-soluble matter content
5.3.11 Constituent sugar content
6 Reporting
Annex A (informative) Protocols for sample preparation, measurement and data analysis
Annex B (informative) Description of individualized cellulose nanofibril (iCNF)
Bibliography