X-RAY-DIFFRACTION STUDY OF THE SMECTIC-C MESOPHASE OF A SIDE-CHAIN POLYACRYLATE CONTAINING A SULFIDE SUBSTITUTED MESOGEN

被引：1
|
作者：
FRANCESCANGELI, O
MELONE, S
LAUS, M
ANGELONI, AS
GALLI, G
CHIELLINI, E
机构：
[1] UNIV BOLOGNA,DIPARTIMENTO CHIM IND & MAT,I-40136 BOLOGNA,ITALY
[2] UNIV PISA,DIPARTIMENTO CHIM & CHIM IND,I-56126 PISA,ITALY
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1994年 / 254卷
关键词：
D O I：
10.1080/10587259408036084
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
An X-ray study was performed on powder specimen and oriented fibers of a side chain liquid-crystalline polyacrylate containing a sulfide substituent. The X-ray diffraction patterns showed the presence of a bilayer smectic C mesophase with the mesogenic groups tilted by an angle beta approximate to 40 degrees with respect to the layer normal. The electron density profile rho(z) along the direction normal to the smectic layers was calculated by Fourier inversion and the results suggest a minor interdigitation of the aliphatic chains. The positional smectic order parameter was also determined.
引用
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页码：321 / 333
页数：13
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