Modified polyvinyl alcohol (PVA) refers to polyvinyl alcohol that has been chemically or physically altered to improve its performance and expand its range of applications. While unmodified PVA already possesses many desirable features—such as water solubility, film-forming ability, and non-toxicity—modifying it allows for greater control over its mechanical strength, thermal stability, moisture sensitivity, and compatibility with other materials.The most common way to modify PVA is through chemical modification. This involves grafting or blending PVA with other polymers or introducing functional groups such as carboxyl, sulfonic, or amino groups. These modifications help tailor the polymer’s properties for specific applications.

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