Difference between revisions of "Polyacrylic acid"
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Latest revision as of 09:10, 20 September 2010
| Poly(acrylic acid) | |
|---|---|
| File:Polyacrylic acid.png | |
| style="background: #F8EABA; text-align: center;" colspan="2" | Identifiers | |
| CAS number | 9003-01-4 |
| style="background: #F8EABA; text-align: center;" colspan="2" | Properties | |
| Molecular formula | (C3H4O2)n |
| Molar mass | variable |
| style="background: #F8EABA; text-align: center;" colspan="2" | Hazards | |
| EU classification | Irritant Xi |
| R-phrases | R36 R37 R38 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |
Poly(acrylic acid) or PAA is a type of polymer. The monomer of poly(acrylic acid) is acrylic acid. In a water solution at neutral pH, many of the side chains of PAA will lose their protons and acquire a negative charge. This makes PAA a polyelectrolyte.
Dry PAA is a white solid. It is capable of absorbing many times its weight in water, and hence is used in disposable diapers[1].
See also
References
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