Determination of the structure of polyelectrolyte brushes

Macromolecules

Volumn 32, Issue 26, 1999, Pages 8952-8964

  Tran, Y ^a   Auroy, P ^a   Lee, L T ^a,b  

^a INSTITUT CURIE   (France)

^b CEA SACLAY   (France)

Author keywords

[No Author keywords available]

Indexed keywords

DENSITY (SPECIFIC GRAVITY); ELECTROSTATICS; ELLIPSOMETRY; GRAFT COPOLYMERS; INFRARED SPECTROSCOPY; NEUTRON REFLECTION; POLYSTYRENES; SALTS; SULFONATION;

POLYELECTROLYTE BRUSHES;

POLYELECTROLYTES;

EID: 12944327948     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma990443r     Document Type: Article

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41. It should be mentioned that the counterion distribution has been determined in the presence of 0.1 M tetramethylammonium chloride in solution. This bulk concentration is much less than the inner counterion concentration (on the order of 1 M). It does not change the brush profile, as shown in the next paragraph. In the absence of tetramethylammonium chloride in solution, we observe a slow disappearance of the counterions. This is attributed to exchanges with other ions (most likely sodium) that are present in the bulk at a trace level. More detail will be given in a forthcoming publication.
42. A is Avogadro's number and α (monomer size) is supposed to be the same for the counterion.
43. The 5 mol/L NaCl concentration is close to the solubility limit of NaCl in water.