Product Overview
Poly(acrylic acid), sodium salt (PAANa) is a water-soluble anionic polymer (polyelectrolyte) known for its dispersing, thickening, stabilizing, and water-binding properties in aqueous systems. This grade is supplied as a powder with an approximate molecular weight of 6,000, offering efficient performance where dispersion and ionic interactions are required.
Lower molecular weight PAANa grades are commonly used as pigment dispersants and stabilizers, while also supporting anti-redeposition and scale-control functionality in formulated systems.
Key Properties
- Water-soluble sodium salt form for rapid dissolution
- Anionic polyelectrolyte supporting dispersion and stabilization
- Moderate molecular weight for efficient performance with limited viscosity increase
- Useful for suspension stability, water binding, and anti-redeposition
- Compatible with a wide range of aqueous formulations
Applications
Superabsorbent Materials
Used in hygiene products, diapers, and agricultural water-retaining gels where water absorption and retention are important.
Coatings & Adhesives
Enhances adhesion, viscosity control, and durability in water-based coating and adhesive formulations.
Detergents & Cleaning Products
Provides dispersion and anti-redeposition performance in liquid detergents and cleaning formulations.
Water Treatment & Industrial Uses
Acts as a dispersant and scale-inhibitor component in wastewater processing and industrial water treatment systems.
Pharmaceutical & Medical Formulation Applications
Used as a controlled-release and bioadhesive polymer in formulation development and materials research where ionic interactions are leveraged.
Solubility & Compatibility
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Solubility: Freely soluble in water
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Polymer type: Anionic polyelectrolyte (sodium salt)
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Formulation compatibility: Performance influenced by pH, ionic strength, and presence of other charged species
The polymer can form complexes with other materials, including poly(ethylene oxide) and charged molecules. Evaluate performance under target formulation conditions.
Preparation Tips
- Add powder slowly to water under agitation to ensure uniform dissolution.
- Allow sufficient mixing time for complete hydration.
- Monitor ionic strength and pH, as these can influence dispersion behavior.
- Adjust formulation order of addition as needed for optimal stability.
Handling & Storage
- Store tightly sealed in a cool, dry place.
- Protect from moisture uptake.
- Use clean, dry tools to avoid contamination.
Frequently Asked Questions
1. What is Poly(acrylic acid), sodium salt commonly used for?
It is commonly used as a dispersant, stabilizer, and anti-redeposition agent in water-based systems such as detergents, coatings, water treatment formulations, and absorbent materials.
2. How does MW ~6,000 affect performance?
This moderate molecular weight provides effective dispersion and stabilization with relatively low viscosity contribution compared to higher molecular weight grades.
3. Is this polymer soluble in water?
Yes. Poly(acrylic acid), sodium salt is freely soluble in water and readily forms clear to slightly hazy solutions depending on concentration and formulation conditions.
4. What formulation factors influence performance?
Polymer concentration, pH, ionic strength, and the presence of other charged materials can all influence dispersion, stabilization, and solution behavior.
5. Can this polymer interact with other polymers?
Yes. PAANa can form complexes with other polymers, including poly(ethylene oxide), as well as with charged molecules, which may be useful in formulation and materials research.
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.
