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Journal of Physical Chemistry B
Volumn 112, Issue 27, 2008, Pages 7996-8009
Double-polyelectrolyte, like-charged amphiphilic diblock copolymers: Swollen structures and pH- And salt-dependent lyotropic behavior
Author keywords

[No Author keywords available]
Indexed keywords

CARBOXYLIC ACIDS; COPOLYMERIZATION; ORGANIC ACIDS; PLASTIC PRODUCTS; STYRENE;
EID: 49149127643     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp712015h     Document Type: Article
Times cited : (32)
References (63)
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  • 38
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    • Bendejacq, D.; Ponsinet, V.; Joanicot, M.; Loo, Y.-L.; Register, R. A. Macromolecules 2002, 35, 6645.
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  • 41
    • 84906370274 scopus 로고    scopus 로고
    • In spite of approximately equal molecular weights (i.e, 16 kg/mol, S53A39)-b-A133 and S83-b-A123 produce L phases of different characteristic sizes in the melt state, as a direct consequence of the effective Flory-Huggins interaction parameter ξeff between the two constitutive blocks: because of its statistical copolymerization with a significant amount of AA motives, S53A39) has an incompatibility with A 133 smaller than that of S83 with A123. The most remarkable repercussion of this feature is that (S53A 39)b-A133 forms a bilayer thinner and less dense in terms of surface chain density than that of S83-b-A123
    • 123.
  • 43
    • 0003702492 scopus 로고
    • Glatter, O, Kratky, O, Eds, Academic Press: London
    • Porod, G. Small-Angle X-ray Scattering; Glatter, O., Kratky, O., Eds.; Academic Press: London, 1982.
    • (1982) Small-Angle X-ray Scattering
    • Porod, G.1
  • 44
    • 84906413238 scopus 로고    scopus 로고
    • This formula is valid provided the scattering lamellar object can be considered as infinite, i.e, their thickness of the lamellae is much smaller than its lateral dimension
    • This formula is valid provided the scattering lamellar object can be considered as infinite, i.e., their thickness of the lamellae is much smaller than its lateral dimension.
  • 46
    • 84906369096 scopus 로고    scopus 로고
    • The derivative ∂αB/A/∂pH vs pH, however, still clearly shows two distinct contributions to ionization, one broad in the small pH range and the other much narrower in the large pH range. These, as before, are associated with the distinct ionizations of the two constituting blocks. However, the average apparent pHplateau and 〈pK A〉 of the blocks in the diblock, 7.43 and 6.07 for (S 53A39) and Am, respectively, are slightly different from those measured when the blocks were titrated as a mixture, i.e, 7.90 and 5.75. Therefore, the topological link in diblock (S53A39)-bA133, seems to have a slight additional effect on the respective ionizations of the two blocks. As far as the purely acrylic acid block A133 is concerned, this increase in the apparent 〈pKA〉 may be attributed to a hindered polyelectrolyte structure resulting from the self-association in water, b
    • A〉 may be attributed to a hindered polyelectrolyte structure resulting from the self-association in water, by analogy with what was observed with a poly(acrylic acid) covalently attached to a polyamide matrix (cf. ref 34) therefore restricted in terms of conformational entropy.
  • 48
    • 84906369097 scopus 로고    scopus 로고
    • s = 1.6 M, which may be the locus of a L ' to L transition.
    • s = 1.6 M, which may be the locus of a L ' to L transition.
  • 49
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    • Bendejacq, D.; Ponsinet, V. To be submitted as a note to the editor of Macromolecules.
    • Bendejacq, D.; Ponsinet, V. To be submitted as a note to the editor of Macromolecules.
  • 54
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    • The fitting procedure minimizes the reduced χ2 parameter ξ2, 1/(n- p)σ[qi2I exp(qi, qi 2Icomp(qi)]2/σ2(qi, where n is the number of experimental points, p that of adjustable parameters, I exp(qi) and Icomp(qi, the experimental and computed intensities at wave-vector qi, respectively, and qi, the experimental standard deviation at wave-vector qi
    • i.
  • 56
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    • Ionization Processes and Proton Binding in Polyprotic Systems: Small molecules, Proteins, Interfaces and Polyelectrolytes
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    • Borkovec, M.; Jönsson, B.; Koper, G. J. M. Ionization Processes and Proton Binding in Polyprotic Systems: Small molecules, Proteins, Interfaces and Polyelectrolytes. In Surface and Colloid Science; Matijevic, E., Ed.; Kluwer Academic, Plenum Press: New York, 2001; Vol. 16, pp 19-339.
    • (2001) Surface and Colloid Science , vol.16 , pp. 19-339
    • Borkovec, M.1    Jönsson, B.2    Koper, G.J.M.3

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.