Light scattering and microscopy from block copolymers with cylindrical morphology

M. C. Newstein, Bruce Garetz, H. J. Dai, N. P. Balsara

Research output: Contribution to journalArticle

Abstract

Cylindrical-morphology diblock copolymers, when ordered under quiescent conditions, exhibit a 4-fold cloverleaf Hv (depolarized) light scattering pattern, with an off-axis intensity maximum. The grain structure of these samples has been resolved by polarized-light microscopy. Closely-spaced grain pairs, whose optic axes are approximately perpendicular, have been observed. A correlated-grain-pair model is proposed, and scattering patterns are calculated using a correlation function approach. A 4-fold symmetry is a consequence of this model, and for some limited sets of model parameters, a qualitative agreement with experiment is observed.

Original languageEnglish (US)
Pages (from-to)4587-4597
Number of pages11
JournalMacromolecules
Volume28
Issue number13
StatePublished - Jan 1 1995

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Light scattering
Block copolymers
Optical microscopy
Crystal microstructure
Light polarization
Optics
Scattering
Experiments

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Newstein, M. C., Garetz, B., Dai, H. J., & Balsara, N. P. (1995). Light scattering and microscopy from block copolymers with cylindrical morphology. Macromolecules, 28(13), 4587-4597.

Light scattering and microscopy from block copolymers with cylindrical morphology. / Newstein, M. C.; Garetz, Bruce; Dai, H. J.; Balsara, N. P.

In: Macromolecules, Vol. 28, No. 13, 01.01.1995, p. 4587-4597.

Research output: Contribution to journalArticle

Newstein, MC, Garetz, B, Dai, HJ & Balsara, NP 1995, 'Light scattering and microscopy from block copolymers with cylindrical morphology', Macromolecules, vol. 28, no. 13, pp. 4587-4597.
Newstein, M. C. ; Garetz, Bruce ; Dai, H. J. ; Balsara, N. P. / Light scattering and microscopy from block copolymers with cylindrical morphology. In: Macromolecules. 1995 ; Vol. 28, No. 13. pp. 4587-4597.
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