is a condensation polymer
based on aspartic acid
. The polymerization
reaction is an example of a step-growth polymerization
to a polyamide
and in one practical procedure aspartic acid is simply heated to 180 °C
resulting in water
release and the formation of a poly(succinimide) with succinimide repeating units
. In the subsequent step this polymer is reacted with sodium hydroxide
in water which results in partial cleavage of the amide bonds
. Two different bonds (α
) are hydrolyzed
resulting in a sodium poly(aspartate) copolymer
with 30% α-linkages and 70% β-linkages.
Sodium poly(aspartate) is used as an anti-scaling agent. It is a chelating agent.
- A Green Polymerization of Aspartic Acid for the Undergraduate Organic Laboratory George D. Bennett J. Chem. Educ. 2005 82 1380 Abstract