Thursday, March 15, 2012
We usually use cloth diapers on our 10 month old, however occasionally we get some disposable diapers. They are amazing. The polymer sodium polyacrylate is responsible for the super absorbent properties of disposable diapers which allow me to be irresponsible and change our baby less frequently. The sodium within the polymer draws in water through osmosis. Sodium polyacrylate can absorb 500 times its weight in water, however the osmotic potential is decreased in the presence of urine since it already contains some salts. Below is a video demonstrating the amazing absorbent properties of this polymer, fortunately without displaying the graphic nature of a disposable diaper in a real world scenario.