ANALYSIS OF THE PHASE-DIAGRAMS OF MIXTURES OF A NEMATIC LIQUID WITH NORMAL-ALKANES

被引:10
作者
ORENDI, H [1 ]
BALLAUFF, M [1 ]
机构
[1] MAX PLANCK INST POLYMER RES,W-6500 MAINZ,GERMANY
来源
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1992年 / 96卷 / 01期
关键词
LIQUID CRYSTALS; PHASE TRANSITIONS; STATISTICAL MECHANICS;
D O I
10.1002/bbpc.19920960115
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The complete phase diagrams in liquid range of mixtures of the nematic liquid crystal 4,4'-azoxyanisole (PAA) with n-dodecane, n-octadecane, and n-tetracosane have been determined. The experimental results are analyzed quantitatively in terms of a theory based on the Flory lattice model of nematic fluids. It is shown that all features present in the experimental phase diagrams are in accord with the theoretical predictions. Nearly quantitative agreement of theory and experiment can be reached if a concentration-dependent interaction parameter is used to describe the isotropic interaction between the nematic liquid crystal and the dissolved n-alkane.
引用
收藏
页码:96 / 100
页数:5
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共 44 条
[31]  
LAM LV, 1974, J CHEM SOC FARAD T 2, V70, P1465
[32]   EINE EINFACHE MOLEKULAR-STATISTISCHE THEORIE DER NEMATISCHEN KRISTALLINFLUSSIGEN PHASE .1. [J].
MAIER, W ;
SAUPE, A .
ZEITSCHRIFT FUR NATURFORSCHUNG PART A-ASTROPHYSIK PHYSIK UND PHYSIKALISCHE CHEMIE, 1959, 14 (10) :882-889
[33]   GENERALIZED LATTICE-MODEL TREATMENT OF NEMATIC-ISOTROPIC PHASE-EQUILIBRIUM IN UNIAXIAL BINARY-MIXTURES OF HARD MOLECULES [J].
MARTIRE, DE ;
GHODBANE, S .
JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (25) :6403-6409
[34]   COMPLETE PHASE-DIAGRAMS OF MIXTURES OF A NEMATIC LIQUID-CRYSTAL WITH NORMAL-ALKANES [J].
ORENDI, H ;
BALLAUFF, M .
LIQUID CRYSTALS, 1989, 6 (04) :497-500
[35]   SWELLING OF ISOTROPIC NETWORKS IN NEMATIC SOLVENTS [J].
ORENDI, H ;
BALLAUFF, M .
MACROMOLECULES, 1991, 24 (21) :5874-5878
[36]   ALKYL CHAINS IN A NEMATIC FIELD .1. A TREATMENT OF CONFORMER SHAPE [J].
PHOTINOS, DJ ;
SAMULSKI, ET ;
TORIUMI, H .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (11) :4688-4694
[37]   ALKYL CHAINS IN A NEMATIC FIELD .2. TEMPERATURE AND CHAIN-LENGTH DEPENDENCE OF ORIENTATIONAL ORDERING [J].
PHOTINOS, DJ ;
SAMULSKI, ET ;
TORIUMI, H .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (11) :4694-4700
[38]   CONSTRAINED CHAIN STATISTICS - D-NMR OF OCTANE IN A NEMATIC SOLVENT [J].
SAMULSKI, ET .
FERROELECTRICS, 1980, 30 (1-4) :83-93
[39]  
SANASUMA Y, 1991, POLYM J, V23, P117
[40]   COEFFICIENT OF VOLUME EXPANSION FOR PETROLEUM WAXES AND PURE NORMAL-PARAFFINS [J].
TEMPLIN, PR .
INDUSTRIAL AND ENGINEERING CHEMISTRY, 1956, 48 (01) :154-161