Deformation of polyelectrolyte brushes in strong flows: Good solvent regime

Macromolecules

Volumn 30, Issue 4, 1997, Pages 1179-1187

  Harden, J L ^a,b,d   Borisov, O V ^c   Cates, M E ^b  

^a UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^b UNIVERSITY OF EDINBURGH   (United Kingdom)

^c MAX PLANCK INSTITUTE FOR POLYMER RESEARCH   (Germany)

^d JOHNS HOPKINS UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DEFORMATION; FLOW OF FLUIDS; GRAFTING (CHEMICAL); MATHEMATICAL MODELS; SOLVENTS;

CHARGE FRACTION; POLYELECTROLYTE BRUSHES; SCALING THEORY;

POLYELECTROLYTES;

EID: 0031075116     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma9612337     Document Type: Article

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37. ion can be important for grafted polyampholytes, however. See also ref 6 for discussion.
38. The effective Stokes radius of a counterion is the sum of the bare ion size and the thickness of the hydration shell around it. The bare ion size may be much smaller than a, but the thickness of the hydration shell can be substantial.
39. Harden, J. L., submitted to Macromolecules.
40. Spatial corrections to V(z) due to polymer density variations in the 2 direction are small for the semidilute conditions in a good solvent brush. So, although they may in principle be considered, they do not qualitatively change the results presented here.
41. max is the size of this last blob. This technical detail does not qualitatively affect any of our conclusions.
42. In the monoblock picture, however, the crossover region is sharper than in the local analysis.
43. Otherwise, the blob concept breaks down entirely and α is so large that the presence of charge modifies the chain statistics.
44. Borisov, O. V.; Zhulina, E. B., submitted to J. Phys. Fr. II.
45. We expect that since the counterion contribution to the polyelectrolyte drag is in general small for good solvent conditions, our results will not be significantly affected by this approximation.