Friday, March 10, 2017

Sponge that absorbs Oil but not Water - New Inventions

The sponge is made of a polyurethane foam coated in silane, which attracts oil. The ratio of the polyurethane to silane has to be precise: too little silane and the sponge won't absorb the oil, too much and the sponge can't be reused. Getting this ratio right is the trickiest part of the process. This delicate balance may make the sponge unusable in the open ocean, but it still holds promise in calmer coastal areas.

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