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The temperature influence upon the complexation process between poly(aspartic acid) and poly(ethylene glycol)

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Nita L.E., Chiriac A.P., Bercea M., Neamtu I

Editorial: ACS Publications, Industrial & Engineering Chemistry Research, 50(9), p.5369-5375, 2011.


The temperature influence upon the formation of an interpolymer complex (IPC) based on poly(aspartic acid) (PAS) and poly(ethylene glycol) (PEG), was investigated. The water PAS/PEG mixture was studied in the temperature range between 22°C and 37°C. The registered data were correlated with the blend composition and the molecular weight of PEG. The intervened interchain physical interactions, especially the hydrogen-bonds, were evidenced by FT-IR spectroscopy. The miscibility and polymer−polymer interactions were experimentally estimated from the dynamic viscosity. The determination of the zeta potential and electrical conductivity of the interpolymer complexes during their formation are in good agreement with the rheological and spectral data. The variation of the composition, respectively, the PAS/PEG ratio, and the different molecular weights of PEG were used in order to establish the optimum conditions for the IPC achievement.

Cuvinte cheie: poly(aspartic acid), poly(ethylene glycol), interpolymer complex