1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Effects of compositional polydispersity on gradient copolymer melts
Rent:
Rent this article for
USD
10.1063/1.4792200
/content/aip/journal/jcp/138/7/10.1063/1.4792200
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/7/10.1063/1.4792200
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of the composition profile for the linear gradient copolymer. The solid line denotes the average composition profile. The dash line denotes a deviation from the average composition profile. t is the segment index and is normalized by the degree of polymerization of the polymer chain. A schematic representation of different monomer sequences in gradient copolymers with the same chain length is provided in the inset. The open circles denote monomer A, and the closed circles denote monomer B.

Image of FIG. 2.
FIG. 2.

Inverse structure factor of the linear gradient copolymer melts with the average composition profile, G(t) = t, as a function of qR g for three compositional polydispersity: k y = 0, 0.1, 0.2.

Image of FIG. 3.
FIG. 3.

Plots of the critical point segregation, (χN) c (solid line), and the critical domain spacing, L c (dash line), as a function of the parameter k y .

Image of FIG. 4.
FIG. 4.

Equilibrium density profiles of A monomers at (a) χN = 30 and (b) χN = 100 for different values of k y . The period of the lamellar structure is D.

Image of FIG. 5.
FIG. 5.

Interfacial width W plotted as a function of k y for the lamellar phases at (a) χN = 30 and (b) χN = 100.

Image of FIG. 6.
FIG. 6.

Period of the lamellar phase as a function of χN for different values of k y .

Image of FIG. 7.
FIG. 7.

Equilibrium probability distribution functions of selected points along a single polymer chain for χN = 30. J = 0, 2, and 1 indicate the two chain ends and the mid-point of chain, respectively. The solid and dash lines correspond to the results from k y = 0 and k y = 0.15, respectively.

Image of FIG. 8.
FIG. 8.

Schematic comparison of the domain spacings formed by gradient copolymers in the region with a relatively small value of χN. In this and the following figures, D and D represent the domain spacings for system with compositional monodispersity and polydispersity, respectively.

Image of FIG. 9.
FIG. 9.

Equilibrium probability distribution functions of selected points along a single polymer chain for χN = 100. The index J (J = 0 ∼ 10) indicates 11 points (including two chain ends) selected uniformly along the polymer. The solid lines and dash lines correspond to the results for k y = 0 and k y = 0.15, respectively.

Image of FIG. 10.
FIG. 10.

Schematic comparison of the domain spacings formed by gradient copolymers in the region with a relatively large value of χN.

Loading

Article metrics loading...

/content/aip/journal/jcp/138/7/10.1063/1.4792200
2013-02-20
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of compositional polydispersity on gradient copolymer melts
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/7/10.1063/1.4792200
10.1063/1.4792200
SEARCH_EXPAND_ITEM