BIREFRINGENCE AND DIFFRACTION OF LIGHT IN ORDERED BLOCK-COPOLYMER MATERIALS

被引：61
作者：
GARETZ, BA
NEWSTEIN, MC
DAI, HJ
JONNALAGADDA, SV
BALSARA, NP
机构：
[1] POLYTECH INST NEW YORK,DEPT CHEM ENGN,BROOKLYN,NY 11201
[2] POLYTECH INST NEW YORK,DEPT ELECT ENGN,BROOKLYN,NY 11201
来源：
MACROMOLECULES | 1993年 / 26卷 / 12期
关键词：
D O I：
10.1021/ma00064a026
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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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页码：3151 / 3155
页数：5
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