ISO 21915-1:2020 テキスタイル—一部のセルロース繊維（リヨセル、キュプロ）とそれらのブレンドの定性的および定量的分析—パート1：走査型電子顕微鏡およびスペクトル分析法を使用した繊維の識別 | ページ 2

Foreword

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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/directives ).

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This document was prepared by Technical Committee ISO/TC 38, Textiles.

A list of all parts in the ISO 21915 series can be found on the ISO website.

Introduction

The qualitative and quantitative determination of fibres is important for the distribution of textile products. In many countries, it is legally obligatory to attach information on the type of fibres used and their composition to textile products.

Therefore, the standards for the fibre identification and composition test methods have been developed on the fibres or blends of fibres as possible.

Cupro and lyocell described in this document are regenerated cellulose fibres and can be said to be materials that contribute to a sustainable society in that raw materials are not derived from petroleum.

There is difficulty to identify if the fibre is cupro or lyocell. Because the characteristics of appearance, chemical resistance, infrared spectroscopy (IR) spectrum, etc. are almost the same, the qualitative property according to ISO/TR 11827 and the quantification by the ISO 1833 series cannot be performed in some cases. The identification methods between cupro and lyocell are specified in this document with the new technical aspects.

ISO 21915 is composed of three parts. ISO 21915-1 specifies the identification method of cupro and lyocell by scanning electron microscope and infrared spectrum analysis. Those may be the time-consuming methods to use the composition analysis. ISO 21915-2 and ISO 21915-3 specify the methods for the composition analysis. The method to be used is determined by the instrument availability and experience.

1 Scope

This document specifies the qualitative analysis for cupro and lyocell using the two methods separately

• scanning electron microscope (SEM) method based on the application of ISO 20705, and
• spectral analysis method.

These testing methods are applied only for cupro and lyocell, or those blends. If other fibres are present, those are identified using the test method of ISO/TR 11827 and removed using the relevant part of the ISO 1833 series.

This method is not applicable for the fibre surface that is damaged during the process (e.g. chemically or physically).

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography