Reinvestigation of the block copolymer modulated lamellar structure

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Reinvestigation of the block copolymer modulated lamellar structure. / Mortensen, Kell; Vigild, Martin Etchells.

In: Macromolecules, Vol. 42, No. 5, 2009, p. 1685–1690.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Mortensen, K & Vigild, ME 2009, 'Reinvestigation of the block copolymer modulated lamellar structure', Macromolecules, vol. 42, no. 5, pp. 1685–1690. https://doi.org/10.1021/ma8024249

APA

Mortensen, K., & Vigild, M. E. (2009). Reinvestigation of the block copolymer modulated lamellar structure. Macromolecules, 42(5), 1685–1690. https://doi.org/10.1021/ma8024249

Vancouver

Mortensen K, Vigild ME. Reinvestigation of the block copolymer modulated lamellar structure. Macromolecules. 2009;42(5):1685–1690. https://doi.org/10.1021/ma8024249

Author

Mortensen, Kell ; Vigild, Martin Etchells. / Reinvestigation of the block copolymer modulated lamellar structure. In: Macromolecules. 2009 ; Vol. 42, No. 5. pp. 1685–1690.

Bibtex

@article{6ed5e3309e1011debc73000ea68e967b,
title = "Reinvestigation of the block copolymer modulated lamellar structure",
abstract = "We report extended crystallographic studies on shear-aligned block copolymer systems within the metastable modulated lamellae (ML) state. With studies limited to the {"}classical{"} orientations parallel and perpendicular to shear plane, the apparent modulated state would likely have been assigned simple lamellar. Surprisingly, upon rotating the sample to intermediate angles additional scattering reflections appear, which reveal the apparent ML phase much beyond what was expected. The modulated structure is a slightly distorted fcc structure. With the sample sheared at relatively low temperature, presumably below the stable gyroid phase, we find a very well resolved ML texture corresponding to a simple twin structure of the distorted fcc structure. When shear-aligned within the hexagonal cylinder phase, and quenced to the gyroid phase or slightly below, we find ML alignment into a two-dimensional powder texture. ",
author = "Kell Mortensen and Vigild, {Martin Etchells}",
year = "2009",
doi = "10.1021/ma8024249",
language = "English",
volume = "42",
pages = "1685–1690",
journal = "Macromolecules",
issn = "0024-9297",
publisher = "American Chemical Society",
number = "5",

}

RIS

TY - JOUR

T1 - Reinvestigation of the block copolymer modulated lamellar structure

AU - Mortensen, Kell

AU - Vigild, Martin Etchells

PY - 2009

Y1 - 2009

N2 - We report extended crystallographic studies on shear-aligned block copolymer systems within the metastable modulated lamellae (ML) state. With studies limited to the "classical" orientations parallel and perpendicular to shear plane, the apparent modulated state would likely have been assigned simple lamellar. Surprisingly, upon rotating the sample to intermediate angles additional scattering reflections appear, which reveal the apparent ML phase much beyond what was expected. The modulated structure is a slightly distorted fcc structure. With the sample sheared at relatively low temperature, presumably below the stable gyroid phase, we find a very well resolved ML texture corresponding to a simple twin structure of the distorted fcc structure. When shear-aligned within the hexagonal cylinder phase, and quenced to the gyroid phase or slightly below, we find ML alignment into a two-dimensional powder texture.

AB - We report extended crystallographic studies on shear-aligned block copolymer systems within the metastable modulated lamellae (ML) state. With studies limited to the "classical" orientations parallel and perpendicular to shear plane, the apparent modulated state would likely have been assigned simple lamellar. Surprisingly, upon rotating the sample to intermediate angles additional scattering reflections appear, which reveal the apparent ML phase much beyond what was expected. The modulated structure is a slightly distorted fcc structure. With the sample sheared at relatively low temperature, presumably below the stable gyroid phase, we find a very well resolved ML texture corresponding to a simple twin structure of the distorted fcc structure. When shear-aligned within the hexagonal cylinder phase, and quenced to the gyroid phase or slightly below, we find ML alignment into a two-dimensional powder texture.

U2 - 10.1021/ma8024249

DO - 10.1021/ma8024249

M3 - Journal article

VL - 42

SP - 1685

EP - 1690

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 5

ER -

ID: 14335699