Phase diagram for the adsorption of weak polyelectrolytes at a soft charged surface

Article Abstract:

The adsorption of polyelectrolytes at oppositely charged surfaces is experimentally studied. The polymer surface coverage, [Gamma], at equilibrium is measured by two reflectivity techniques, ellipsometry and polarization modulated infrared reflection absorption spectroscopy (PM-IRRAS), as a function of the surface charge density [sigma], and of the polymer ionization degree, [alpha].

Thin films, Multilayered, Multilayered thin films, Adsorption, Structure

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Determination of charge and molecular weight of rigid-rod polyelectrolytes

Article Abstract:

The Higashi method is used for synthesizing rigid-rod poly(aramide) polyelectrolytes and its effective charge is determined by using Electrophoresis NME spectroscopy and diffusion NMR spectroscopy. The molecular weight of the polymer is found to be 14000 g/mol.

Usage, Nuclear magnetic resonance spectroscopy, Molecular weights

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