Super Absorbent Polymers

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Super absorbent polymer (SAP) are polymers that can absorb and retain extremely large amounts of a liquid relative to their own mass and has water retention properties. it is a white powder and forms inti transparent gel when dissolved in water. Each particle of super absorbent polymer, however remains separate and can absorb up to 500 times its weight of water resulting in a 500 fold increase in particle size. Unlike most substances, which hydrate, the hydration of super absorbent polymer is fully reversible and the particle can return to its original size. The water can be removed by a variety of methods such as heating or high pressure. The super absorbent polymer can thus act as water reservoir, that can be filled and emptied many times.

• Water retention for supplying water to plants