LYOTROPIC LIQUID-CRYSTAL PHASE FORMATION IN 1-(ALKANOYLMETHYL AMINO) 1-DEOXY-D-GLUCITOLS

被引:26
作者
HALL, C
TIDDY, GJT
PFANNEMULLER, B
机构
[1] PORT SUNLIGHT LAB,UNILEVER RES,QUARRY RD E,WIRRAL L63 3JW,MERSEYSIDE,ENGLAND
[2] UNIV SALFORD,DEPT CHEM & APPL CHEM,SALFORD M5 4WT,LANCS,ENGLAND
[3] UNIV FREIBURG,INST MACROMOLEC CHEM,W-7800 FREIBURG,GERMANY
关键词
D O I
10.1080/02678299108033150
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The lyotropic and thermotropic liquid crystals of a series of 1-(alkanoylmethyl amino) 1-deoxy-D-glucitols (C-8-C-12, C18 = ) oleoyl derivative) have been investigated by polarizing optical microscopy and differential scanning calorimetry. For chain lengths longer than the octanoyl derivative, the pure compounds form a lamellar (smectic A) phase before melting to the isotropic liquid. Both the liquid crystal and isotropic phases of the neat surfactant and aqueous mixtures supercool to form metastable states. In water the octanoyl derivative forms hexagonal (H1) phase, while the C-8-C12 compounds give H1, cubic (V1) and L-alpha mesophases. Only the L-alpha phase is observed with the oleoyl derivative.
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页码:527 / 537
页数:11
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