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Sodium polyacrylate ( ACR, ASAP, or PAAS ), [1] : 233 also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH 2 −CH (CO 2 Na)−] n and has broad applications in consumer products. This super-absorbent polymer (SAP) has the ability to absorb 100 to 1000 times its mass in water.
Polyacrylic acid and its derivatives (particularly sodium polyacrylate) are used in disposable diapers. Acrylic acid is also the main component of Superabsorbent Polymers (SAPs), which are cross-linked polyacrylates that can absorb and retain more than 100 times of their own weight in liquid.
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Polycarboxylates are linear polymers with a high molecular mass (M r ≤ 100 000) and with many carboxylate groups. They are polymers of acrylic acid or copolymers of acrylic acid and maleic acid. The polymer is used as the sodium salt (see: sodium polyacrylate). Use Isomers of the repeating unit in polyaspartic acid.
Sodium polyacrylate (SO-dee-um pol-ee-AK-ruh-late) is an odorless, grainy white powder. Its most impressive property is its ability to absorb large amounts of fluid, up to 800 times its volume of distilled water and lesser amounts of other liquid mixtures.
Dec 31, 2021 · The hydrophilicity and biocompatibility of the PMAA and the corresponding sodium salt (PMA sodium salt), together with their ability to absorb water molecules and swell, make these polyelectrolytes interesting materials for biomedical applications.
- 10.3390/ma15010282
- 2022/01
- Materials (Basel). 2022 Jan; 15(1): 282.
Mar 27, 2024 · Sodium polyacrylate can quickly absorb water and expand in volume when exposed to water. According to this principle, it can be used as an efficient cooling and oxygen barrier material in fire extinguishers.
Sodium polyacrylate is a super-absorbent polymer that works as a thickener, and emulsifier in cosmetics. It increases the viscosity of products and improves their texture. Body care: It functions as a thickening agent, texture enhancer, film-forming agent, and emulsion stabilizer.
