Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Sodium polyacrylate (ACR, ASAP, or PAAS),[1]: 233 also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH2−CH(CO2Na)−]n and has broad applications in consumer products.[2] This super-absorbent polymer (SAP) has the ability to absorb 100 to 1000 times its mass in water. Sodium polyacrylate is an anionic polyelectrolyte[3] with negatively charged carboxylic groups in the main chain. It is a polymer made up of chains of acrylate compounds. It contains sodium, which gives it the ability to absorb large amounts of water. When dissolved in water, it forms a thick and transparent solution due to the ionic interactions of the molecules. Sodium polyacrylate has many favorable mechanical properties. Some of these advantages include good mechanical stability, high heat resistance, and strong hydration. It has been used as an additive for food products including bread, juice, and ice cream.
While sodium neutralized polyacrylic acids are the most common form used in industry, there are also other salts available including potassium, lithium and ammonium.[4] The origins of super-absorbent polymer chemistry trace back to the early 1960s when the U.S. Department of Agriculture (USDA) developed the first super-absorbent polymer materials.
^ASM Heat Treating Society. Conference and Exposition (2003). Heat Treating and Surface Engineering : Proceedings of the 22nd Heat Treating Society Conference and the 2nd International Surface Engineering Congress, 15-17 September, 2003, Indianapolis, Indiana, USA. Narendra B. Dahotre, ASM International, International Surface Engineering Congress. Materials Park, Ohio: ASM International. ISBN 978-1-61503-261-7. OCLC 644399371.
^"What Is Sodium Polyacrylate & How Is it Used?". LIVESTRONG.COM. Retrieved 24 April 2020.
^Ma, Yunhao; Wang, Wenhang; Wang, Yabin; Guo, Yang; Duan, Songmei; Zhao, Kaixuan; Li, Shuzhi (1 November 2018). "Metal ions increase mechanical strength and barrier properties of collagen-sodium polyacrylate composite films". International Journal of Biological Macromolecules. 119: 15–22. doi:10.1016/j.ijbiomac.2018.07.092. ISSN 0141-8130. PMID 30021138. S2CID 51697320.
^"History of Super Absorbent Polymer Chemistry | M² Polymer Technologies Inc". | M² Polymer Technologies Inc. 21 February 2019. Retrieved 26 April 2020.
and 30 Related for: Sodium polyacrylate information
Sodiumpolyacrylate (ACR, ASAP, or PAAS),: 233 also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH2−CH(CO2Na)−]n...
its original weight in purified water. Different from sodiumpolyacrylate, potassium polyacrylate can be used as water retaining agent in agriculture and...
powder form of SodiumPolyacrylate, the positively charged sodium ions are bound to the polyacrylate, however in aqueous solutions the sodium ions can dissociate...
acrylic acid and maleic acid. The polymer is used as the sodium salt (see: sodiumpolyacrylate). Polycarboxylates are used as builders in detergents. Their...
An acrylate polymer (also known as acrylic or polyacrylate) is any of a group of polymers prepared from acrylate monomers. These plastics are noted for...
(further uses, chemical and physical details) Sodiumpolyacrylate (more uses and details) Potassium polyacrylate (more uses and details) Polyacrylamide (more...
Common hydrogel agriculture's ingredient is potassium polyacrylate or sodiumpolyacrylate. As a superabsorbent material, it can absorb plenty of water...
blended with sodium hydroxide in the presence of an initiator to form a poly-acrylic acid sodium salt (sometimes referred to as sodiumpolyacrylate). This polymer...
Methacrylic acid Acryloyl chloride Acrylamide Acrylate polymer Sodiumpolyacrylate Merck Index, 11th Edition, 124. International Union of Pure and Applied...
powdery chemical absorbent called sodiumpolyacrylate is incorporated into the fabric of the garment. Sodiumpolyacrylate can absorb around 300 times its...
(0.24–0.31 in) superabsorbent polymer water beads (most commonly sodiumpolyacrylate, colloquially called water beads, hydrogel balls, gel balls, water...
Dorset in January 2012. Upon further analysis these proved to be sodiumpolyacrylate granules, a kind of superabsorbent polymer with a variety of common...
breaks. Gel packs may be made by adding hydroxyethyl cellulose, sodiumpolyacrylate, superabsorbent polymer or vinyl-coated silica gel. Hot-or-cold packs...
polyaspartate is a potential green alternative to several materials such as sodiumpolyacrylate used in disposable diapers and agriculture. It can act as a super-swelling...
refrigerated during shipping. The active ingredient in many gel packs is sodiumpolyacrylate, a non-toxic powder that can stay cold when saturated with water...
formed by gamma reduction technique in aqueous solutions that contain sodiumpolyacrylate or partly carboxylated polyacrylamide or glutaric acids. By irradiating...
much less powerful, and shoot superabsorbent polymer (most commonly sodiumpolyacrylate) water beads (often sold commercially as garden moisture retainers)...
shown to do so in aerobic conditions. Aquamid Chitosan Rhoca-Gil Sodiumpolyacrylate, a similar material Herth G, Schornick G, Buchholz F (2015). "Polyacrylamides...
contain any of them. Tapioca also contains very little cholesterol, fat, or sodium. To support to the creation of tapioca pearls, some additives are used,...
introduction of super-absorbent material from polymers known as sodiumpolyacrylate that were originally developed in 1966. The first waterproof diaper...
chloride solution. This process is one of two used in the production of sodiumpolyacrylate, a superabsorbent polymer used in disposable diapers. Dispersion...
systems. This research focuses on a polyacrylate film developed for hybrid passive cooling. The film uses sodiumpolyacrylate, a low-cost industrial material...
the brand being discussed. Type Diapers (Pull-Up Style) Material SodiumPolyacrylate Polypropylene Wood Pulp Polyethylene Polyurethane/polyolefin elastics...
superabsorbent compared to the non-biodegradable standard cross-linked sodiumpolyacrylate. The results obtained have not yet led to the use of crosslinked...
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