Kokufuta E, Suzuki S, Harada K
Biosystems. 1977 Dec;9(4):211-4. doi: 10.1016/0303-2647(77)90005-3.
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.
