Sodium methallyl sulfonate (SMAS) is a sulfonate monomer with the chemical formula C₄H₇NaO₃S. It is primarily used in industrial and chemical applications, particularly in polymer and material science. Here are its main uses:
1. Copolymerization in Polymers
- SMAS is commonly used as a comonomer in the production of water-soluble polymers and superabsorbent polymers (SAPs).
- It improves the hydrophilicity (water affinity) and ionic character of polymers, making them useful in:
- Detergents & Dispersants – Enhances solubility and anti-scaling properties.
- Water Treatment – Used in scale inhibitors and anti-corrosion agents.
- Textile & Paper Industries – Acts as a modifier for fiber and paper coatings.
2. Acrylic Fiber Production
- Incorporated into polyacrylonitrile (PAN) fibers to improve dyeability and moisture absorption.
3. Adhesives & Coatings
- Enhances the performance of latex paints, adhesives, and coatings by increasing stability and water resistance.
4. Oilfield Chemicals
- Used in enhanced oil recovery (EOR) as a surfactant or viscosity modifier in drilling fluids.
5. Personal Care & Cosmetics
- Sometimes used in hair gels, creams, and other personal care products for its film-forming and stabilizing properties.
Key Properties:
- High reactivity due to the double bond (methallyl group).
- Sulfonate group provides excellent water solubility and chemical stability.
