GB/T 2910.9-2024Textiles - Quantitative chemical analysis - Part 9: Mixtures of acetate with certain other fibres (method using benzyl alcohol) (English PDF)

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020

Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents.

This document is Part 9 of GB/T 2910 Textiles - Quantitative chemical analysis. GB/T

2910 has been published in the following parts.

-- Part 1.General principles of testing;

-- Part 2.Ternary fibre mixture;

-- Part 3.Mixtures of acetate and certain other fibres (method using acetone);

-- Part 4.Mixtures of certain protein fibres with certain other fibres (method using

hypochlorite);

-- Part 5.Mixtures of viscose, cupro or modal and cotton fibres (method using

sodium zincate);

-- Part 6.Mixtures of viscose or certain types of cupro or modal or lyocell and

cotton fibres (method using formic acid and zinc chloride);

-- Part 7.Mixtures of polyamide and certain other fibres (method using formic acid);

-- Part 8.Mixtures of acetate and triacetate fibres (method using acetone);

-- Part 9.Mixtures of acetate with certain other fibres (method using benzyl

alcohol);

-- Part 10.Mixtures of triacetate or polylactide and certain other fibres (method

using dichloromethane);

-- Part 11.Mixtures of certain cellulose fibres with certain other fibres (method

using sulfuric acid);

-- Part 12.Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain

elastane fibres with certain other fibres (method using dimethylformamide);

-- Part 13.Mixtures of certain chlorofibers and certain other fibers (method using

carbon disulfide /acetone)

-- Part 14.Mixtures of acetate and certain chlorofibres (method using acetic acid);

Textiles - Quantitative chemical analysis - Part 9.Mixtures of

acetate with certain other fibres (method using benzyl alcohol)

1 Scope

This document describes the determination of the acetate content of a mixture of the

following fibres after the removal of non-fibrous matter using the benzyl alcohol

method.

-- acetate fiber, and

-- triacetate fiber, polypropylene fiber, polyolefin elastic fiber, melamine fiber,

polypropylene/polyamide composite fiber and polyacrylate fiber.

2 Normative references

The provisions of the following documents constitute the essential clauses of this

document through normative references in this text. Among them, for referenced

documents with dates, only the versions corresponding to the dates are applicable to

this document; for referenced documents without dates, the latest versions (including

all amendments) are applicable to this document.

GB/T 2910.1 Textiles - Quantitative chemical analysis - Part 1.General principles

of testing (GB/T 2910.1-2009, ISO 1833-1.2006, IDT)

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Principle

The benzyl alcohol reagent is used to dissolve and remove acetate fiber from a mixture

of known dry mass. The residue is collected, washed, dried and weighed. The corrected

mass is used to calculate its percentage in the dry mass of the mixture and the mass

fraction of acetate is obtained from the difference.

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