Birefringence and Diffraction of Light in Ordered Block Copolymer Materials

B. A. Garetz; M. C. Newstein; H. J. Dai; S. V. Jonnalagadda; N. P. Balsara

doi:10.1021/ma00064a026

Birefringence and Diffraction of Light in Ordered Block Copolymer Materials

B. A. Garetz, M. C. Newstein, H. J. Dai, S. V. Jonnalagadda, N. P. Balsara

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The scattering of light from ordered block copolymer materials, consisting of irregularly shaped birefringent grains with randomly oriented optic axes, is analyzed theoretically and experimentally. We show that independent estimates of the characteristic grain sizes can be obtained from the far-field angular spread of the diffracted light and from the total orthogonally polarized scattered power. Experimental measurements on ordered polystyrene-polyisoprene diblock copolymer solutions in toluene support the predictions of the theory. Grain sizes estimated from diffraction and total power measurements are in agreement. Such measurements should aid in the physical characterization of ordered block copolymer materials, as well as other random anisotropic media.

Original language	English (US)
Pages (from-to)	3151-3155
Number of pages	5
Journal	Macromolecules
Volume	26
Issue number	12
DOIs	https://doi.org/10.1021/ma00064a026
State	Published - 1993

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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abstract = "The scattering of light from ordered block copolymer materials, consisting of irregularly shaped birefringent grains with randomly oriented optic axes, is analyzed theoretically and experimentally. We show that independent estimates of the characteristic grain sizes can be obtained from the far-field angular spread of the diffracted light and from the total orthogonally polarized scattered power. Experimental measurements on ordered polystyrene-polyisoprene diblock copolymer solutions in toluene support the predictions of the theory. Grain sizes estimated from diffraction and total power measurements are in agreement. Such measurements should aid in the physical characterization of ordered block copolymer materials, as well as other random anisotropic media.",

author = "Garetz, {B. A.} and Newstein, {M. C.} and Dai, {H. J.} and Jonnalagadda, {S. V.} and Balsara, {N. P.}",

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T1 - Birefringence and Diffraction of Light in Ordered Block Copolymer Materials

AU - Garetz, B. A.

AU - Newstein, M. C.

AU - Dai, H. J.

AU - Jonnalagadda, S. V.

AU - Balsara, N. P.

PY - 1993

Y1 - 1993

N2 - The scattering of light from ordered block copolymer materials, consisting of irregularly shaped birefringent grains with randomly oriented optic axes, is analyzed theoretically and experimentally. We show that independent estimates of the characteristic grain sizes can be obtained from the far-field angular spread of the diffracted light and from the total orthogonally polarized scattered power. Experimental measurements on ordered polystyrene-polyisoprene diblock copolymer solutions in toluene support the predictions of the theory. Grain sizes estimated from diffraction and total power measurements are in agreement. Such measurements should aid in the physical characterization of ordered block copolymer materials, as well as other random anisotropic media.

AB - The scattering of light from ordered block copolymer materials, consisting of irregularly shaped birefringent grains with randomly oriented optic axes, is analyzed theoretically and experimentally. We show that independent estimates of the characteristic grain sizes can be obtained from the far-field angular spread of the diffracted light and from the total orthogonally polarized scattered power. Experimental measurements on ordered polystyrene-polyisoprene diblock copolymer solutions in toluene support the predictions of the theory. Grain sizes estimated from diffraction and total power measurements are in agreement. Such measurements should aid in the physical characterization of ordered block copolymer materials, as well as other random anisotropic media.

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Birefringence and Diffraction of Light in Ordered Block Copolymer Materials

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