ISO/TS 20477:2017
(Main)Nanotechnologies — Standard terms and their definition for cellulose nanomaterial
Nanotechnologies — Standard terms and their definition for cellulose nanomaterial
ISO/TS 20477:2017 defines terms and definitions for different types of cellulose nanomaterials including secondary components found in cellulose nanomaterials due to their manufacturing processes. The document also gives information on cellulose micromaterials in Annex A. Where necessary, terms from the ISO/IEC 80004 vocabulary series are included in this document. Terms in this document are applicable to all types of cellulose nanomaterials regardless of production methods and their origin (plants, animals, algae or bacteria).
Nanotechnologies — Termes normalisés et leur définition pour les nanomatériaux à base de cellulose
L'ISO 20477 :2017 présente les termes et définitions relatifs à différents types de nanomatériaux à base de cellulose, y compris les composants secondaires résultant des processus de fabrication de ces nanomatériaux. Il donne également des informations sur les micromatériaux à base de cellulose décrits dans l'Annexe A. Lorsque nécessaire, les termes de vocabulaire définis dans la série de normes ISO/IEC 80004 sont inclus dans le présent document. Les termes contenus dans ce document sont applicables à tous les types de nanomatériaux à base de cellulose, quelles que soient leurs méthodes de production et leur origine (plantes, animaux, algues ou bactéries).
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Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 20477
First edition
2017-08
Nanotechnologies — Standard terms
and their definition for cellulose
nanomaterial
Termes normalisés et leur définition pour les nanomatériaux à base
de cellulose
Reference number
ISO/TS 20477:2017(E)
©
ISO 2017
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ISO/TS 20477:2017(E)
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ii © ISO 2017 – All rights reserved
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ISO/TS 20477:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Core nanotechnology terms related to cellulose nanomaterials . 1
3.2 Prerequiste non-nanotechnology terms related to cellulose nanomaterials . 2
3.3 Terms specific to cellulose nanomaterials . 3
Annex A (informative) Cellulose micromaterials . 5
Bibliography . 6
Index 7
© ISO 2017 – All rights reserved iii
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ISO/TS 20477:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www. iso. org/d irectives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www. iso. org/p atents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: ww w .iso. org/iso / foreword. html.
This document was prepared by Technical Committee ISO/TC 229, Nanotechnologies.
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ISO/TS 20477:2017(E)
Introduction
Cellulose is a polymer produced by nature. In plants, animals, algae and bacteria, cellulose is extruded
from terminal enzyme complexes (TC). TCs are made up of many identical subunits, each containing at
least one catalytic site from which a single cellulose chain is synthesized. Cellulose chains from a single
TC combine to form an elementary fibril. As TCs in plants, animals, algae, and bacteria have different
numbers and configurations of subunits, the elementary fibrils they produce have different geometries.
[4]
Whether cellulose nanomaterials are separated by industrial processes or produced directly
by organisms, they all contain a common structural component, which is the elementary fibril. This
common component, the elementary fibril, provides a way to describe cellulose nanomaterials from all
manufacturing methods and cellulose sources.
In industrial productions, cellulose nanomaterials can be manufactured by conversion of wood pulp
through chemical, biological or mechanical processes. In the case of bacterium-based cellulose
nanomaterials, they are produced directly by bacteria and can be further acid-hydrolysed to smaller
dimensions. Besides trees and bacteria, algae is another potential sources of cellulose nanomaterials for
industrial applications. Due to their renewable nature and unique properties, cellulose nanomaterials
have developed into platform materials that have application potential in a wide range of products
including those that currently utilize petroleum-based ingredients.
In the current stage of development, several terms to describe cellulose nanomaterials coexist and
have created confusion among users. Rather than delaying standards development until knowledge
accumulated with market maturity is available, we have an opportunity to define a standard vocabulary
for cellulose nanomaterials as they enter the market place. It is anticipated that as the market for
cellulose nanomaterials matures, so too will the standard vocabulary. Beginning to define a standard
vocabulary now will facilitate future communication, eliminate confusion, remove trade barriers and
provide policy makers and regulators with a set of consensus-based terms.
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TECHNICAL SPECIFICATION ISO/TS 20477:2017(E)
Nanotechnologies — Standard terms and their definition
for cellulose nanomaterial
1 Scope
This document defines terms and definitions for different types of cellulose nanomaterials including
secondary components found in cellulose nanomaterials due to their manufacturing processes. The
document also gives information on cellulose micromaterials in Annex A.
Where necessary, terms from the ISO/IEC 80004 vocabulary series are included in this document.
Terms in this document are applicable to all types of cellulose nanomaterials regardless of production
methods and their origin (plants, animals, algae or bacteria).
2 Normative references
There are no normative references in this document.
3 Terms and definitions
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 Core nanotechnology terms related to cellulose nanomaterials
3.1.1
nanoscale
length range approximately from 1 nm to 100 nm
Note 1 to entry: Properties that are not extrapolations from larger sizes are predominately exhibited in this
length range.
[SOURCE: ISO/TS 80004-1:2015, 2.1]
3.1.2
nanomaterial
material with any external dimension in the nanoscale (3.1.1) or having inter
...
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