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GB/T 39748.10-2021Urine-absorbing aids for incontinence - Test methods for characterizing polymer-based absorbent materials - Part 10: Determination of extractable polymer content by potentiometric titration (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

March 9, 2021

Implementation date

March 9, 2021

Scope

GB/T 39748.10-2021 (Urine-absorbing aids for incontinence - Test methods for characterizing polymer-based absorbent materials - Part 10: Determination of extractable polymer content by potentiometric titration) is available as an English-translated PDF.

GB/T 39748.10-2021 is the Chinese standard "Urine-absorbing aids for incontinence - Test methods for characterizing polymer-based absorbent materials - Part 10: Determination of extractable polymer content by potentiometric titration".

Its scope clause reads: This part of GB/T 39748 specifies the carboxylic acid groups of different chain lengths that can be extracted by polyacrylate (PA) super absorbent powder in brine.

Method for measuring mass fraction. This test method is used for extractable polymer mass fractions ranging from 5.29% to 9.00% (see Appendix A), but it is expected to be suitable for more A wide range of. Its clauses include terms and definitions.

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Document preview — GB/T 39748.10-2021

National Standard of the People's Republic of China

Classification: C 45

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test principle
5 Reagent
6 Test equipment
7 Sampling
8 Test procedure
9 Calculation
10 Accuracy
11 Inspection report
Appendix A (informative appendix) Statistical results of experiments between laboratories

1 Scope

This part of GB/T 39748 specifies the carboxylic acid groups of different chain lengths that can be extracted by polyacrylate (PA) super absorbent powder in brine.

Method for measuring mass fraction.

This test method is used for extractable polymer mass fractions ranging from 5.29% to 9.00% (see Appendix A), but it is expected to be suitable for more

A wide range of.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article

Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.

ISO 187 Standard atmospheric conditions for the treatment and testing of paper, paperboard and pulp samples (Paper, boardandpulps-Standard atmosphereforconditioningandtestingandprocedureformonitoringtheatmosphereandconditioning ofsamples)

ISO 3696 Analytical laboratory water characteristics and test methods (Waterforanalyticallaboratoryuse-Specification andtestmethods)

ISO 5725-2 Measurement methods and accuracy of results (accuracy and precision) Part 2.Determining the repetition of standard measurement methods

The basic method of performance and reproducibility [Accuracy(truenessandprecision)ofmeasurementmethodsandresults-Part

2 Basicmethodforthedeterminationofrepeatabilityandreproducibilityofastandardmeasurement

method]

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Extractables

The sum of the soluble acid and carboxylate groups extracted from the super absorbent powder, where the carboxylate groups can be monomers, oligomers or polymer.

3.2 Saltgroup

Alkali metal salts of carboxylate groups, also known as neutralizing carboxylates.

3.3 Acidgroup

Carboxylate group. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 187 · ISO 3696 · ISO 5725

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