What is ISO 17190-4 about?
ISO 17190-4 discusses polyacrylate superabsorbent powders for urine-absorbing aids for incontinence. ISO 17190-4 outlines a test method for the evaluation of mass loss upon heating for cross-linked polyacrylate superabsorbent powders.
Method shown in ISO 17190-4 applies to powdered polymeric superabsorbent materials that are free flowing under the specified test conditions. Substances other than water that are volatile in this temperature range will interfere. The onus is on the polymer formulator/producer to decide if such interference is possible and exclude the method from use, providing an alternative. Or modify the method accordingly.
Who is ISO 17190-4 for?
ISO 17190-4 on the estimation of the moisture content as weight loss upon heating for Polyacrylate superabsorbent powders is useful for:
- Manufacturers of polyacrylate superabsorbent powders
- Test centers for polyacrylate superabsorbent powders
- Regulatory authorities
Why should you use ISO 17190-4?
Polyacrylate superabsorbent powders absorb water or urine by a process called osmosis. When the polymer is placed in urine, there is a tendency for the atoms contained in the powder to distribute equally between the network and water. Extractables are the sum of the soluble acid and salt groups of monomeric, oligomeric, and polymeric carboxylates extracted from the superabsorbent polymer
ISO 17190-4 guidelines provides requirements on Water, Sodium hydroxide solution, Hydrochloric acid solution, Sodium chloride solution, Standard buffer solutions, sampling, procedure, calculations, reports, precision for estimation of the moisture content as weight loss upon heating in polyacrylate powder. This helps in conducting proper assessment and provides reliable results for the estimation of the moisture content as weight loss upon heating in polyacrylate superabsorbent powder that can be reproduced in any laboratory.
What’s changed since the last update?
BS ISO 17190-4:2020 supersedes ISO 17190-4:2001, which has been withdrawn. BS ISO 17190-4:2020 has a full-text review and new laboratory analysis with a statistical evaluation with respect to ISO 17190-4:2010.