Behaviour of the miscibility of poly(ethylene oxide)/liquid crystal blends

被引：0
作者：
Rodrigues, JRS
Kaito, A
Soldi, V
Pires, ATN [1 ]
机构：
[1] Univ Fed Santa Catarina, Dept Quim, Lab Polimeros, BR-88040900 Florianopolis, SC, Brazil
[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 305, Japan
来源：
POLYMER INTERNATIONAL | 1998年 / 46卷 / 02期
关键词：
blend; liquid crystal; phase transition; miscibility;
D O I：
暂无
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 microscopic behaviour of blends of poly(ethylene oxide) with two different low molecular weight liquid crystals (LC) was studied in order to evaluate miscibility. One of the liquid crystal components had a phase transition temperature lower than the melting temperature of poly(ethylene oxide) (PEO), and the other a higher value. The low molecular weight liquid crystal components were 4-cyano-4'-n-heptylbiphenyl (7CB) and p-cyanophenyl p-pentyloxybenzoate (pCP). Thermal analysis and polarized optical and scanning electron microscopy were employed. The melting temperature (T(m)) depression of PEO increased with LC content in the blend, suggesting that the PEO was miscible with both liquid crystals in the isotropic phase. The spherulitic structural morphology of the semicrystalline components is affected by the presence of liquid crystals. (C) 1998 SCI.
引用
收藏
页码：138 / 142
页数：5
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