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.

Nanotechnologies — Caractérisation d'échantillons de nanofibrilles individualisées de cellulose

General Information

• Status: Published
• Publication Date: 14-Mar-2021
• ICS: 07.120 - Nanotechnologies
• Technical Committee: ISO/TC 229 - Nanotechnologies
• Drafting Committee: ISO/TC 229/JWG 2 - Measurement and characterization
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2024
• Completion Date: 15-Jan-2024

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 21346
First edition
2021-03
Nanotechnologies —
Characterization of individualized
cellulose nanofibril samples
Nanotechnologies — Caractérisation d'échantillons de nanofibrilles
individualisées de cellulose
Reference number
ISO/TS 21346:2021(E)
©
ISO 2021

---------------------- Page: 1 ----------------------
ISO/TS 21346:2021(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TS 21346:2021(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Characteristics to be measured of iCNF samples and their measurement methods .2
5.1 General . 2
5.2 Characteristics required to be measured or identified . 3
5.2.1 Morphology and size . 3
5.2.2 Total dry matter content . 4
5.2.3 Crystal structure . 4
5.2.4 Optical transmittance . 4
5.2.5 Surface functional groups: Types . 4
5.2.6 Surface functional groups: Content . 5
5.2.7 Viscosity . 5
5.3 Characteristics recommended to be measured or identified. 5
5.3.1 Width and height . 5
5.3.2 Length. 6
5.3.3 Molecular weight distribution . 6
5.3.4 Supernatant dry matter ratio .
...

TECHNICAL ISO/TS
SPECIFICATION 21346
First edition
Nanotechnologies —
Characterization of individualized
cellulose nanofibril samples
Nanotechnologies — Caractérisation d'échantillons de nanofibrilles
individualisées de cellulose
PROOF/ÉPREUVE
Reference number
ISO/TS 21346:2020(E)
©
ISO 2020

---------------------- Page: 1 ----------------------
ISO/TS 21346:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2020 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TS 21346:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Characteristics to be measured of iCNF samples and their measurement methods .2
5.1 General . 2
5.2 Characteristics required to be measured or identified . 3
5.2.1 Morphology and size . 3
5.2.2 Total dry matter content . 4
5.2.3 Crystal structure . 4
5.2.4 Optical transmittance . 4
5.2.5 Surface functional groups: Types . 4
5.2.6 Surface functional groups: Content . 5
5.2.7 Viscosity . 5
5.3 Characteristics recommended to be measured or identified. 5
5.3.1 Width and height . 5
5.3.2 Length. 6
5.3.3 Molecular weight distribution . 6
5.3.4 Supernatant dry matter ratio .
...