Some Polymer Geek Chic for the Weekend: Amazing Poly(acrylic acid)

No matter how often I see it demonstrated, I still think that poly(acrylic acid) and its salts are amazing materials. Sodium polyacrylate is used, as many of you know as a superabsorber – it can absorb about 1000 times its weight in water: 1 g is enough to turn a litre of water into a gel. Unsurprisingly, poly(sodium acrylate) is now a standard ingredient in baby diapers. It all works via hydrogen bonding…..the addition of salt to the gel will reverse the effect and destroy the gel:

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: