Super Absorbent Polymer

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SAPs are polymers that can absorb and retain extremely large amounts of a liquid relative to their own mass. The total absorbency and swelling capacity are controlled by the type and degree of cross-linkers used to make the gel. Low density cross-linked SAP generally have a higher absorbent capacity and swell to a larger degree. These types of SAPs also have a softer and more sticky gel formation. High cross-link density polymers exhibit lower absorbent capacity and swell, but the gel strength is firmer and can maintain particle shape even under modest pressure. Superabsorbents are synthetic polymers with water retention properties for a variety of uses. WATERLOCK is supplied as white powder. In contact with water the polymer hydrates and becomes a transparent gel. Each particle however remains separate and can absorb up to 500 times its weight of water resulting in a five hundred fold increase in particle size. Unlike most substances, which hydrate, the hydration are 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 polymer can thus act as water reservoir, that can be filled and emptied many times.