Polyelectrolyte behavior of an interpolyelectrolyte complex formed in aqueous solution of a charged dendrimer and sodium poly(L-glutamate)

Article Abstract:

The binding of the protonated dendrimer G4-PAMAM as a guest polyelectrolyte (GPE) to the anionic homopolyelectrolyte NaPGA is studied by potentiometric titration in 0.25 M aqueous NaCl solution. The results are used to compute the polyelectrolyte (PE) behaviors for hypothetically noninteracting mixtures of the PEs at different stoichiometric ratios of the dendrimer's 126 chargeable amino groups to the 300 carboxylate groups of the NaPGA.

Spectra, Volumetric analysis, Sodium chloride

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Interpolyelectrolyte complex and coacervate formation of poly(glutamic acid) with a dendrimer studied by light scattering and SAXS

Article Abstract:

Light scattering was used to study interpolyelectrolyte complex (IPEX) formation between sodium poly(L-glutamate) and poly(amido amine) dendrimer in aqueous solution containing 0.25 M NaCl as a function of pH. A model describing the structural evolution of the polyelectrolyte association and microphase separation during dendrimer charging was proposed and checked against the existing scattering results.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Potassium & Sodium Compounds, Sodium & Sodium Compounds, Research, Sodium compounds, Aqueous solution reactions

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Structural evolution of an interpolyelectrolyte complex at charged dendrimers interacting with poly(L-glutamate)

Article Abstract:

The formation of interpolyelectrolyte complex (PEC) between sodium poly(l-glutamate) and fourth generation aminoterminated poly(amido amine) dendrimer and its aggregation by static and dynamic light scattering is discussed. It is observed for systems with carboxylate excess over amino/ammonium groups and again attributable to compact particles with similar size to the former.

Observations, Glutamate, Chemical reactions

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