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 language | English (US) |
|---|---|
| Pages (from-to) | 4587-4597 |
| Number of pages | 11 |
| Journal | Macromolecules |
| Volume | 28 |
| Issue number | 13 |
| State | Published - Jan 1 1995 |
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ASJC Scopus subject areas
- Materials Chemistry
Cite this
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 journal › Article
}
TY - JOUR
T1 - Light scattering and microscopy from block copolymers with cylindrical morphology
AU - Newstein, M. C.
AU - Garetz, Bruce
AU - Dai, H. J.
AU - Balsara, N. P.
PY - 1995/1/1
Y1 - 1995/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0029323203&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029323203&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0029323203
VL - 28
SP - 4587
EP - 4597
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 13
ER -