Research output: Contribution to journal › Article › peer-review
Conformational properties and interaction of polyelectrolyte pH-sensitive stars. / Rud, O.V.; Birshtein, T.M.
In: Polymer Science - Series A, Vol. 55, No. 12, 2013, p. 757-771.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Conformational properties and interaction of polyelectrolyte pH-sensitive stars
AU - Rud, O.V.
AU - Birshtein, T.M.
PY - 2013
Y1 - 2013
N2 - Changes in the conformations of two polyelectrolyte stars with amphiphilic segments during their convergence are investigated by the Scheutjens-Fleer method (a numerical method of solving self-consistent field equations). The stars are placed in an aqueous-salt solvent at a pH close to the pK of the segments of polyelectrolyte arms. Individual stars have a two-phase quasi-micellar conformation at a sufficiently strong hydrophobicity of segments in the uncharged state and at a sufficiently low salt concentration. This conformation is formed via separation of star arms into two groups: One consists of uncharged arms and forms a dense core in the star center, while the other consists of arms coming through and forming a corona with charged arms. When stars in this conformation converge, the transition of arms from the corona on the side of the oncoming star to the core occurs inside both stars. When stars touch each other with their cores, the stars merge into a united quasi-micelle. The free energy of interacti
AB - Changes in the conformations of two polyelectrolyte stars with amphiphilic segments during their convergence are investigated by the Scheutjens-Fleer method (a numerical method of solving self-consistent field equations). The stars are placed in an aqueous-salt solvent at a pH close to the pK of the segments of polyelectrolyte arms. Individual stars have a two-phase quasi-micellar conformation at a sufficiently strong hydrophobicity of segments in the uncharged state and at a sufficiently low salt concentration. This conformation is formed via separation of star arms into two groups: One consists of uncharged arms and forms a dense core in the star center, while the other consists of arms coming through and forming a corona with charged arms. When stars in this conformation converge, the transition of arms from the corona on the side of the oncoming star to the core occurs inside both stars. When stars touch each other with their cores, the stars merge into a united quasi-micelle. The free energy of interacti
U2 - 10.1134/S0965545X13120080
DO - 10.1134/S0965545X13120080
M3 - Article
VL - 55
SP - 757
EP - 771
JO - Polymer Science - Series A
JF - Polymer Science - Series A
SN - 0965-545X
IS - 12
ER -
ID: 7407523