THERMAL TRANSITIONS IN POLY(ALKYL-4,4'-DIPHENOXY TEREPHTHALATE)S

被引：6

作者：

CAMPOY, I ^{[1
]}

MARCO, C ^{[1
]}

GOMEZ, MA ^{[1
]}

FATOU, JG ^{[1
]}

机构：

[1] CSIC, INST CIENCIA & TECNOL POLIMEROS, JUAN CIERVA 3, E-28006 MADRID, SPAIN

来源：

POLYMER BULLETIN | 1993年 / 31卷 / 01期

关键词：

D O I：

10.1007/BF00298770

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 thermal transitions of poly(alkyl-4,4'-diphenoxy terephthalate)s, in which the flexible spacer contains 5,6 and 7 methylene groups, have been studied by thermogravimetry, differential scanning calorimetry, X ray diffraction, thermoptical microscopy and small angle light scattering. The series shows a marked influence of the even and odd number of methylene groups on the crystal-liquid crystal transition temperatures and on the isotropization transition temperature. Nematic mesophases have been observed for the odd terms, and a transition from a smectic to a nematic mesophase has been observed for the even term.

引用

页码：97 / 104

页数：8

共 38 条

[21] THERMOTROPIC POLYESTERS .2. INVESTIGATION OF THE MESOPHASE PROPERTIES OF POLYMERS BASED ON 4,4'-DIHYDROXYBIPHENYL [J].

KRIGBAUM, WR ;

WATANABE, J ;

ISHIKAWA, T .

MACROMOLECULES, 1983, 16 (08) :1271-1279

[22] TRANSITIONS IN TRANS-1,4-POLYISOPRENE [J].

LOVERING, EG ;

WOODEN, DC .

JOURNAL OF POLYMER SCIENCE PART A-2-POLYMER PHYSICS, 1969, 7 (10PA) :1639-&

[23]

MANDELKERN L, 1984, ANAL CALORIMETRY

[24] THERMAL AND STRUCTURAL STUDY OF THE PHASE-TRANSITIONS IN LIQUID-CRYSTALLINE POLY(HEPTAMETHYLENE TEREPHTHALOYL-BIS-4-OXYBENZOATE) [J].

MARCO, C ;

LORENTE, J ;

GOMEZ, MA ;

FATOU, JG .

POLYMER, 1992, 33 (15) :3108-3115

[25]

MARCO C, 1990, MAKROMOL CHEM, V191, P1151

[26] LIGHT SCATTERING STUDIES OF ORIENTATION CORRELATIONS IN CHOLESTERYL ESTERS [J].

RHODES, MB ;

PORTER, RS ;

CHU, W ;

STEIN, RS .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1970, 10 (03) :295-&

[27] MELTING BEHAVIOR OF BULK CRYSTALLIZED POLYMERS [J].

ROBERTS, RC .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER LETTERS, 1970, 8 (05) :381-&

[28]

ROVIELLO A, 1982, MAKROMOL CHEM, V183, P895

[29] POLYMER BLEND OF POLYCARBONATE AND THERMOTROPIC LIQUID-CRYSTALLINE POLYESTER WITH A LONG FLEXIBLE SPACER IN THE MAIN CHAIN [J].

SHIN, BY ;

CHUNG, IJ .

POLYMER JOURNAL, 1989, 21 (11) :851-861

[30] DISTRIBUTION OF STRAIGHT-CHAIN LENGTHS IN UNANNEALED AND ANNEALED SOLUTION-CRYSTALLIZED POLYETHYLENE BY RAMAN-SPECTROSCOPY [J].

SNYDER, RG ;

SCHERER, JR ;

RENEKER, DH ;

COLSON, JP .

POLYMER, 1982, 23 (09) :1286-1294

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