Sodium polyacrylate, also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [-CH2-CH(CO2Na)-]n and broad application in consumer products. This superabsorbent polymer has the ability to absorb as much as 100 to 1000 times its mass in water. Sodium polyacrylate is an anionic polyelectrolyte with negatively charged carboxylic groups in the main chain. While sodium neutralized polyacrylic acids are the most common form used in industry, there are also other salts available including potassium, lithium and ammonium.
The origins of superabsorbent polymer chemistry trace back to the early 1960s when the U.S. Department of Agriculture developed the first super absorbent polymer materials.
Video Sodium polyacrylate
Applications
Sodium polyacrylate and other derivatives of polyacrylic acid have a wide variety of commercial and industrial uses. These include:
- Animals
- Pet pad
- Horse urine odor absorbing
- Drown-free water source for feeder insects
- Health Care
- Paper diaper
- Sanitary napkin
- Nursing mat
- Medical bandage
- Wound dressings
- Industry
- Waste liquid control
- Drilling fluid
- Concrete protection
- Environment
- Anti-flood Bag
- Excreta collection
- Other products
- Wire and cable water blocking
- Artificial snow
- Hot/cold gel pack
- Urine bag
- Growing toys
- Thickening agent
- Fragrance carrier
- Fire-retardant gel
- Anti-fogging packing material
- Waterbed
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References
Source of the article : Wikipedia
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