polyacrylate powder, a super absorbent polymer.
Sodium polyacrylate is a polymer, meaning that it consists of chains
of identical units, known as monomers.
water is added to the white crystalline polymer, they absorb many
times their size and a polymeric gel forms. In the absorbing process,
the gel that forms swells.
how much water does this polymer absorb? Make your prediction below.
diapers use small amounts of sodium polyacrylate to absorb baby
urine. The more polymer powder in a diaper, the more urine it can
addition to its use in disposable diapers, sodium polyacrylate,
have many uses.
is found in soil to help soil retain water.
is used by florists as a dirt-free way to store water and to keep
cut flowers fresh for a long time.
is used in filtration units that remove water from airplane and
automobile fuels such that vehicles perform more efficiently.
is used to make Gro-Creatures,
which are toys shaped like dinosaurs, fish, lizards, and other
assorted animals that increase in size when placed in water. These
critters can be dried out and rehydrated over and over again.
the sodium polyacrylate is immersed in water, there is a higher
concentration of water outside the polymer. When water approaches
a sodium polyacrylate molecule it is "drawn" to the center of the
molecule by osmosis.
The ability of the polymer to absorb excessive amounts of water
is due to osmotic pressure (the movement of water through a membrane
permeable only to water). The sodium polyacrylate absorbs water
until there is an equal concentration of water inside and outside.
who have alllergies, especially allergy to disposable diapers should
be an observer or recorder for the group. Sodium
polyacrylate is non-toxic! However, if placed in the eye, the eye
will become dry and irritated. Inhalation of the powder will also
be irritating to nasal membranes. Be careful, and minimize exposure
to sodium polyacrylate. Dispose of excess powder and/or gelled material
in the trash. Do not put down the sink!