ISO 21701:2019

Textiles —Test method for accelerated hydrolysis of textile materials and biodegradation under controlled composting conditions of the resulting hydrolysate

This document specifies a test method for the determination of the biodegradability of the hydrolysate of textile materials obtained after accelerated hydrolysis under controlled composting conditions by measurement of the amount of evolved carbon dioxide with a gas chromatography. This test method can be applied to petroleum-based man-made biodegradable textile materials which are manufactured from polyethylene terephthalate succinate, polycaprolactone, polypropylene carbonate, polybuthylene succinate or copolymer using them.

Textiles — Méthode d’essai pour hydrolyse accélérée des matières textiles et la biodégradation dans des conditions de compostage contrôlées de l'hydrolysat résultant

General Information

• Status: Published
• Publication Date: 03-Sep-2019
• ICS: 59.080.01 - Textiles in general
• Technical Committee: ISO/TC 38 - Textiles
• Drafting Committee: ISO/TC 38/WG 30 - Tests for Biodegradability
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 09-Jan-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21701
First edition
2019-09
Textiles — Test method for accelerated
hydrolysis of textile materials and
biodegradation under controlled
composting conditions of the resulting
hydrolysate
Textiles — Méthode d’essai pour hydrolyse accélérée des matières
textiles et la biodégradation dans des conditions de compostage
contrôlées de l'hydrolysates résultant
Reference number
ISO 21701:2019(E)
©
ISO 2019

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ISO 21701:2019(E)

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ii © ISO 2019 – All rights reserved

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ISO 21701:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reference material . 3
6 Apparatus . 3
7 Test procedure . 4
7.1 Preparation of test material . 4
7.2 Preparation of the inoculum . 4
7.3 Accelerated hydrolysis test (abiotic test) . 4
7.4 Biodegradation test (biotic test) of hydrolysate . 4
7.5 Gas chromatographic analysis . 5
8 Calculation and expression of results . 5
8.1 Amount of carbon dioxide in grams . 5
8.2 Percentage of biodegradation . 7
8.3 Validity of results . 7
9 Test report .
...