ISO 1833-10:2019 pdf free.Textiles一Quantitative chemical analysis -Mixtures of triacetate or polylactide with certain other fibres ( method using dichloromethane).
1 Scope
This document specifies a method, using dichioromethane, to determine the mass percentage of triacetate or polylactide, after removal of non-fibrous matter, in textiles made of mixtures of
— triacetate or polylactide with
— wool or other animal hair, silk, protein, cotton, viscose, cupro, modal,lyoceil, polyarnide, polyester, acrylic, elastoinultiester, polypropylene, elastolefin, melamine, polypropylene/polyatnide bicomponent,polyacrylate and glass fibres.
Triacetate fibres which have been partially hydrolysed (i.e. saponification) cease to be completely soluble in the reagent. In such cases, this method is not applicable.
2 Normative references
The following referenced documents are indispensable for the application 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.
Iso 1833-1, Textiles — Quantitative chemical analysis — Part 1: General principles of testing
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Principle
The triacetate or polylactide fibres are dissolved out from a known dry mass of the mixture, with dichioromethane. The residue is collected, washed, dried and weighed; its mass, corrected if necessary, is expressed as a percentage of the dry mass of the mixture. The percentage of triacetate or polylactide is found by the difference.
5 Reagents
Use the reagents described in ISO 1833-1 together with that given in 5.1.
5.1 Dichioromethane.
SAFETY PRECAUTIONS — The toxic effects of this reagent shall be borne in mind and full
precautions shall be taken during use.
6 Apparatus
Use the apparatus described in Iso 1833-1 together with that given in L
6.1 Conical flask, minimum capacity 200 ml, glass-stoppered.
7 Test procedure
Follow the general procedure given in ISO 1833-1, and then proceed as follows.
To the specimen contained in the conical flask i) add 100 ml of dichioromethane (5i) per gram of specimen. Insert the stopper and shake the flask to wet out the specimen. Allow the flask to stand for 30 mm at room temperature, shaking it at intervals of about 10 mm.
Decant the liquid through the weighed filter crucible.
Add 60 ml of dichioromethane to the residue in the flask, shake it by hand, and filter the contents of the flask through the filter crucible. Transfer any residual fibres to the crucible by washing out the flask with a little more dichloromethane.
Drain the crucible using suction to remove excess liquid, refill the crucible with dichloromethane, and allow it to drain under gravity.
Finally, drain the crucible using suction. Rinse with hot water to eliminate all the solvent, dry the crucible and residue, then cool and weigh them.
8 Calculation and expression of results
Calculate the results as described in the general instructions of ISO 1833-1.
The value of d is 1,00 except for polyester elastomultiester, elastolefin and melamine fibre, for which d is 1,01.
In the case of triacetate that is not completely soluble in the reagent, the percentage of triacetate is calculated using a value of d is 1,02. The percentage of triacetate thus calculated should be deducted from 100 to give the percentage of the other fibre.
9 Precision
On a homogeneous mixture of textile materials, the confidence limits of the results obtained by this method are not greater than ±1 percentage point for the confidence level of 95 %.ISO 1833-10 pdf download.