Paas acrylic polymer
Paas acrylic polymer, Polyacrylic acid Sodium(PAAS) is a sodium salt of polyacrylic acid with the chemical formula [−CH2−CH(CO2Na)−]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.
Sodium polyacrylate is an anionic polyelectrolyte with negatively charged carboxylic groups in the main chain. Sodium polyacrylate is a chemical 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. 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.
Water-soluble polymers are used in many industries, especially polyacrylates. Some applications include thickeners, flocculants, dispersants, and drag reducing agents. Polyacrylates are also used as environmentally friendly adhesives or coatings.
In addition, sodium polyacrylate is used in paper diapers and Maximum Absorbency Garments as the absorbent material. It is also used in ice packs to convert the water used as the cooling agent into a gel, in order to reduce spillage in case the ice pack leaks. Sodium polyacrylate has also been studied for utilization in many applications such as nanofiltration of water to absorb water and concentrate the liquid with microbes. Also, it is used for eco-engineering as a water-retaining agent in rocky slopes for increasing moisture availability in the soil. This can improve the water retention availability of the soil and infiltration capacity in sandy soil.
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