Polyakryylihappoa

Polyakryylihappoa, also known as polyacrylic acid (PAA), is a polymer with the chemical formula (C3H4O2)n. It is a synthetic macromolecule composed of repeating acrylic acid monomer units. PAA is a water-soluble polymer that exists as a weak acid. It is typically produced through the polymerization of acrylic acid.

The properties of polyacrylic acid can be modified by adjusting its molecular weight and degree of cross-linking. Higher molecular weight PAA generally exhibits greater viscosity and thickening capabilities. Cross-linked versions of PAA form hydrogels, which can absorb and retain large amounts of water. These hydrogels are often used in applications requiring swelling and moisture absorption.

Polyakryylihappoa finds widespread use in various industries. It serves as a superabsorbent polymer in products like disposable diapers and adult incontinence products due to its ability to absorb many times its weight in water. In the detergent industry, it acts as a dispersant and anti-redeposition agent, preventing dirt from settling back onto fabrics during washing. PAA is also utilized in water treatment as a scale inhibitor and dispersant to prevent mineral buildup in pipes and industrial equipment. Furthermore, it is employed in cosmetics and personal care products as a thickener, emulsifier, and stabilizer. Its applications extend to agriculture for soil conditioning and to the pharmaceutical industry for drug delivery systems.