title: Potentiometric titration behavior of polyaspartic acid prepared by thermal polycondensation.
abstract: 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.
mesh_terms: D001224:Aspartic Acid / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D010455:Peptides / Q000138:chemical synthesis; D011199:Potentiometry
chemical_list: D010455:Peptides; D001224:Aspartic Acid