poly(methacrylic acid)

Poly(methacrylic acid) is a synthetic polymer featuring pendant carboxylic acid groups along its backbone, giving it strong hydrophilic character and pH-responsive behavior. It is widely used in pharmaceutical delivery systems, adhesives, coatings, and water-treatment applications where its ability to absorb moisture, form hydrogen bonds, and respond to pH changes is valuable. Engineers select this polymer when seeking biocompatible, chemically reactive matrices for controlled-release formulations or superabsorbent materials, though its thermal stability and mechanical strength are generally lower than commodity polymers, limiting load-bearing structural applications.