PAM

Polyacrylamide (or polycarbamoylethylene) is a polymer (-CH2CHCONH2-) formed from acrylamide subunits that can also be readily cross-linked. Acrylamide needs to be handled using best laboratory practice (such as wearing appropriate gloves, lab coat, etc. and having safe systems of work) to avoid poisonous exposure since it is a neurotoxin.

Polyacrylamide is not toxic, but unploymerized acrylamide can be present in the polymerized acrylamide. Therefore, it is recommended to handle it with caution. In the cross-linked form, it is hhighly water-absorbent, forming a soft gel used in such applications as polyacrylamide gel electrophoresis and in manufacturing soft contact lenses.

In the straight-chain form, it is also used as a thickener and suspending agent. More recently, it has been used as a subdermal filler for aesthetic facial surgery (see Aquamid).