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Interfacial properties of statistical copolymer brushes in contact with homopolymer melts
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10.1063/1.3575182
/content/aip/journal/jcp/134/15/10.1063/1.3575182
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/15/10.1063/1.3575182
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Enrichment of segments in the brush for different f (, and χN = 10); and (b) different χN (f = 0.5, , and α = 1.0).

Image of FIG. 2.
FIG. 2.

Effective volume fraction of A segments in the interface as a function of w b/h calculated from SCFT (a) and SST (b) for different values of . Overall volume fraction of A segments in the brush is f = 0.5. Parameters α = 1.0 and χN = 10.

Image of FIG. 3.
FIG. 3.

Interfacial widths from SCFT (solid) and SST (dashed) as a function of the key parameters. Unless otherwise stated, chains are purely random (λ = 0); (a) Varying f, χN = 10, α = 1.0, and ; (b) Varying χN, f = 0.5, α = 1.0, and ; (c) Varying α, f = 0.5, χN = 10, and ; and (d) Varying , f = 0.5, χN = 10, and α = 1.0.

Image of FIG. 4.
FIG. 4.

(a) Interfacial widths between the brush and the melt as a function of , with f = 0.5, χN = 10, and α = 1.0 for different blockiness of sequences; and (b) Enrichment of segments in the brush structure for different blockiness of sequences. Parameters f = 0.5, , and χN = 10.

Image of FIG. 5.
FIG. 5.

Interaction potentials for different values of f. χN = 10, α = 1.0, and .

Image of FIG. 6.
FIG. 6.

Interfacial energy of the brush–melt interface for purely random chains (λ = 0) (a) for different values of fN = 10, α = 1.0, and ); (b) for different values of χN (f = 0.5, α = 1.0, and ); (c) for different values of α (f = 0.5, χN = 10, and ); and (d) for different values of (f = 0.5, χN = 10, and α = 1.0). The dotted lines in (c) and (d) show predictions for the autophobic scenario. The insets show corresponding predictions from SST.

Image of FIG. 7.
FIG. 7.

(a) Interfacial energy and (b) effective concentration of A segments in the interfacial region displayed as a function of for different kinds of randomness. f = 0.5, χN = 10, and α = 1.0.

Image of FIG. 8.
FIG. 8.

(a) Plot of γ(f) − γ(1 − f) vs f as a function of . χN = 10, and α = 1.0. (b) Plot of γ(f) − γ(1 − f) vs f as a function of type of randomness. α = 1.0, χN = 10, and . In both plots, the dotted lines correspond to the theoretically reported limits of the neutral window from Meng and Wang (Ref. 62).

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/content/aip/journal/jcp/134/15/10.1063/1.3575182
2011-04-18
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Interfacial properties of statistical copolymer brushes in contact with homopolymer melts
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/15/10.1063/1.3575182
10.1063/1.3575182
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