Product Overview
Poly(acrylic acid) (PAA) is a high-molecular-weight polymer known for strong hydrophilicity, high viscosity contribution, and excellent dispersing properties in aqueous systems. This product is supplied as a 25% solution in water (MW ~345,000), offering convenient handling and easier incorporation into water-based formulations.
PAA is commonly used in applications that benefit from controlled rheology, binding, dispersion, and water retention, including water treatment, coatings, adhesives, and personal care formulations.
Key Properties
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25% aqueous solution for easy dosing and formulation
- High hydrophilicity and strong water interaction
- Effective viscosity building and rheology control in water-based systems
- Excellent dispersing and stabilization performance
- Useful binding and film-forming contribution in compatible formulations
Applications
Water Treatment
Used as a dispersant and scale inhibitor in industrial water systems to help stabilize suspended solids and reduce mineral deposition.
Superabsorbent Polymers
Used in the development of highly absorbent hydrogel and superabsorbent systems for hygiene products and absorbent materials, including diapers and related absorbent structures.
Coatings & Adhesives
Enhances adhesion, film formation, and formulation stability in water-based coatings and adhesive systems, including paints, inks, and pressure-sensitive adhesives.
Cosmetics & Personal Care
Functions as a thickener and stabilizer in gels, lotions, and other personal care formulations where viscosity control and suspension stability are desired.
Absorbent & Dressing Materials
Used in absorbent material development, including hydrogel structures and dressing-type material applications where water uptake and retention are important.
Solubility & Compatibility
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Supplied in: Water (25% solution)
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pH behavior: pH-responsive due to carboxylic acid groups; neutralization can impact viscosity.
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Formulation compatibility: Typically compatible with many water-based systems; performance may vary with salts, pH, surfactants, and solvents.
Final formulation properties depend on polymer concentration, ionic strength, temperature, and degree of neutralization. Evaluate under target formulation conditions.
Formulation & Use Tips
- Mix thoroughly before use to ensure uniformity.
- Add slowly when diluting to avoid localized viscosity increases.
- Adjust pH gradually; viscosity may change significantly with neutralization.
- Consider electrolyte effects when formulating.
Handling & Storage
- Store tightly closed in the original container.
- Keep in a cool, dry area and protect from contamination.
- Avoid extreme temperatures and inspect prior to use.
Frequently Asked Questions
1. What does “25% solution in water” mean?
This product is supplied as an aqueous solution containing 25% Poly(acrylic acid) by weight, which simplifies measuring, pumping, and blending into water-based formulations.
2. What is Poly(acrylic acid) commonly used for?
Poly(acrylic acid) is commonly used for rheology control, dispersion, binding, and water retention in applications such as water treatment, coatings, adhesives, superabsorbent materials, and personal care formulations.
3. How does molecular weight impact performance?
Molecular weight influences viscosity, thickening efficiency, and binding or film-forming behavior. Performance is also affected by concentration, pH, ionic strength, and formulation composition.
4. Why does viscosity change after pH adjustment?
As carboxylic acid groups ionize during neutralization, polymer chain interactions change, often increasing viscosity. Electrolytes and other formulation components can further influence final behavior.
Safety & Documentation
Follow standard laboratory and industrial hygiene practices. Refer to the Safety Data Sheet (SDS) for hazard information, recommended PPE, and safe handling guidance.
