Potentiometric titration behavior of polyaspartic acid prepared by thermal polycondensation.
The dissociation behavior of polyaspartic acid prepared by thermal polycondensation was studied by potentiometric titrations at various ionic strengths. From the analysis of the titration curves, the ratio of alpha- and beta-linkaged aspartyl residues was estimated at about 7:3 and the intrinsic dissociation constants of alpha- and beta-carboxyl groups are 3.25 and 4.35, respectively.
D001224:Aspartic Acid / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D010455:Peptides / Q000138:chemical synthesis; D011199:Potentiometry
D010455:Peptides; D001224:Aspartic Acid