Phase behavior of CTAB:: o-iodophenol binary system

被引：18

作者：

Endoh, K ^{[1
]}

Suga, H ^{[1
]}

机构：

[1] Kinki Univ, Sci & Technol Res Inst, Higashiosaka, Osaka 5778502, Japan

来源：

THERMOCHIMICA ACTA | 1999年 / 334卷 / 1-2期

关键词：

phase diagram; DSC; TG; surfactant with additive; intermolecular complex;

D O I：

10.1016/S0040-6031(99)00116-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The phase diagram of the binary system CTAB (cetyltrimethylammonium bromide): OIPh (o-iodophenol) was investigated by DSC and TG methods along with polarizing-microscopic and visual observations. It was found that CTAB and OIPh produced a 1 : 3 intermolecular complex in addition to the 1 : 1 complex already reported. Both complexes underwent incongruent melting at about 305 K and 365 K, respectively. Another complex of 2 : 1 ratio was observed in the high temperature region, which formed a solid solution of mesomorphic nature with the high-temperature metastable phase of CTAB over Limited composition range. The thermodynamics of formation of the 1 : 1 complex in the crystalline state is discussed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：89 / 96

页数：8

共 23 条

[1] ELLAGIC ACID-DERIVATIVES - A NEW MESOGENIC SERIES EXHIBITING A THERMOTROPIC CUBIC MESOPHASE [J].

BILLARD, J ;

ZIMMERMANN, H ;

POUPKO, R ;

LUZ, Z .

JOURNAL DE PHYSIQUE, 1989, 50 (05) :539-547

[2] STRUCTURE OF THE SMECTIC D-PHASE [J].

ETHERINGTON, G ;

LEADBETTER, AJ ;

WANG, XJ ;

GRAY, GW ;

TAJBAKHSH, A .

LIQUID CRYSTALS, 1986, 1 (03) :209-214

[3] CALORIMETRIC STUDY OF THIOPHENE FROM 13-K TO 300-K - EMERGENCE OF 2 GLASSY CRYSTALLINE STATES [J].

FIGUIERE, P ;

SZWARC, H ;

OGUNI, M ;

SUGA, H .

JOURNAL OF CHEMICAL THERMODYNAMICS, 1985, 17 (10) :949-966

[4] LOW-TEMPERATURE THERMAL DATA FOR THE 9 NORMAL PARAFFIN HYDROCARBONS FROM OCTANE TO HEXADECANE [J].

FINKE, HL ;

GROSS, ME ;

WADDINGTON, G ;

HUFFMAN, HM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1954, 76 (02) :333-341

[5]

GLEDHILL W, 1953, PHARM J, V151, P184

[6]

GRAY GW, 1984, LIQUID CRYSTALS PLAS

[7] A COMPLEX GENERATED IN A CATIONIC SURFACTANT-AROMATIC ADDITIVE SYSTEM [J].

HIRATA, H ;

KANDA, Y ;

SAKAIGUCHI, Y .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1989, 62 (08) :2461-2464

[8] THE MECHANISM OF ROTATION OF LONG-CHAIN ALKYL BROMIDES AND OTHER MOLECULES IN THE SOLID STATE [J].

HOFFMAN, JD ;

SMYTH, CP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1950, 72 (01) :171-180

[9] SOLID-SOLID PHASE-TRANSITIONS OF LONG-CHAIN NORMAL-ALKYLTRIMETHYLAMMONIUM HALIDES [J].

IWAMOTO, K ;

OHNUKI, Y ;

SAWADA, K ;

SENO, M .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1981, 73 (1-2) :95-103

[10] ELASTIC AND QUASIELASTIC NEUTRON-SCATTERING STUDIES IN KBR-KCN MIXED-CRYSTALS [J].

LOIDL, A ;

SCHRADER, T ;

KNORR, K ;

BOHMER, R ;

MERTZ, B ;

MCINTYRE, GJ ;

VOGT, T ;

MUTKA, H ;

MULLNER, M ;

JEX, H ;

HAUSSUHL, S .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1989, 75 (01) :81-99

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