DENSITY AND CONCENTRATION FLUCTUATIONS IN POLY(STYRENE-B-PHENYLMETHYLSILOXANE) COPOLYMERS

被引:12
作者
FLOUDAS, G
VOGT, S
PAKULA, T
FISCHER, EW
机构
[1] Max-Planck-Institut für Polymerforschung, D-55021 Mainz
关键词
D O I
10.1021/ma00078a015
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Small-angle X-ray scattering (SAXS) is employed to study the density and concentration fluctuations near the microphase separation in poly(styrene-b-phenylmethylsiloxane) copolymers. The former were calculated from the measured isothermal compressibility and are continuous throughout the transition. The residual SAXS background intensity due to local concentration fluctuations is a sensitive probe of the order-disorder transition. The same results have been obtained by independent computer simulations of dense diblock copolymer melts.
引用
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页码:7210 / 7213
页数:4
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