Polymer that can absorb and retain extremely large amounts of a liquid relative to its own mass.
- The liquid absorbed can be water or an organic liquid.
- The swelling ratio of a superabsorbent polymer can reach the order of 1000:1.
- Superabsorbent polymers for water are frequently polyelectrolytes.
PAC, 2004, 76, 889. 'Definitions of terms relating to reactions of polymers and to functional polymeric materials (IUPAC Recommendations 2003)' on page 903 (https://doi.org/10.1351/pac200476040889)