ON THE INTERACTION OF THE MORPHOLOGICAL STRUCTURE AND THE LC BEHAVIOR OF LC SIDE-GROUP BLOCK-COPOLYMERS

被引：70

作者：

FISCHER, H ^{[1
]}

POSER, S ^{[1
]}

ARNOLD, M ^{[1
]}

机构：

[1] UNIV BRISTOL,HH WILLS PHYS LAB,BRISTOL BS8 1TL,AVON,ENGLAND

来源：

LIQUID CRYSTALS | 1995年 / 18卷 / 03期

关键词：

D O I：

10.1080/02678299508036651

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The interaction between morphological structure and phase behaviour of a LC side group block copolymer has been investigated using DSC, TEM and small angle X-ray diffraction. All samples of Polystyrene-block-2-(3-cholesteryloxycarbonyloxy)ethyl methacrylate (PS-b-PChEMA) show a phase separation between the two blocks. It was found that in the case of those samples where the liquid crystalline sub-phase is not continuous (spheres), only a nematic phase is seen, whereas in all samples in which there is a continuous liquid crystalline sub-phase, the smectic A phase of the homopolymer is formed. On the other hand, the block copolymer seems to stabilize the LC phase; no dependency of the clearing temperatures on the molecular weight of the LC blocks has been observed.

引用

页码：503 / 509

页数：7

共 30 条

[21]

KODAIRA T, 1992, MAKROMOL CHEM, V193, P1331

[22]

KOMIYA Z, MACROMOLECULES, V26, P1387

[23]

MOLLER M, 1989, MAKROMOL CHEM, V190, P1153

[24] MICROPHASE SEPARATION OF ABC-TYPE TRIBLOCK COPOLYMERS [J].

NAKAZAWA, H ;

OHTA, T .

MACROMOLECULES, 1993, 26 (20) :5503-5511

[25] MOLECULAR ENGINEERING OF LIQUID-CRYSTAL POLYMERS BY LIVING POLYMERIZATION .23. SYNTHESIS AND CHARACTERIZATION OF AB BLOCK COPOLYMERS BASED ON OMEGA-[(4-CYANO-4'-BIPHENYL)-OXY]ALKYL VINYL ETHER, 1H,1H,2H,2H-PERFLUORODECYL VINYL ETHER, AND 2-(4-BIPHENYLOXY)ETHYL VINYL ETHER WITH 1H,1H,2H,2H-PERFLUORODECYL VINYL ETHER [J].

PERCEC, V ;

LEE, MS .

JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 1992, 29 (09) :723-740

[26] SMALL-ANGLE NEUTRON-SCATTERING STUDY OF BLOCK CO-POLYMER MORPHOLOGY [J].

RICHARDS, RW ;

THOMASON, JL .

MACROMOLECULES, 1983, 16 (06) :982-992

[27] DEPENDENCE OF THE OBDD MORPHOLOGY ON DIBLOCK COPOLYMER MOLECULAR-WEIGHT IN COPOLYMER HOMOPOLYMER BLENDS [J].

SPONTAK, RJ ;

SMITH, SD ;

ASHRAF, A .

MACROMOLECULES, 1993, 26 (05) :956-962

[28] ORDERED BICONTINUOUS DOUBLE-DIAMOND STRUCTURE OF STAR BLOCK COPOLYMERS - A NEW EQUILIBRIUM MICRODOMAIN MORPHOLOGY [J].

THOMAS, EL ;

ALWARD, DB ;

KINNING, DJ ;

MARTIN, DC ;

HANDLIN, DL ;

FETTERS, LJ .

MACROMOLECULES, 1986, 19 (08) :2197-2202

[29]

TSUKAHARA Y, 1982, POLYM J, V14, P878

[30] SYNTHESIS AND CHARACTERIZATION OF LC SIDE-CHAIN AB BLOCKCOPOLYMERS [J].

ZASCHKE, B ;

FRANK, W ;

FISCHER, H ;

SCHMUTZLER, K ;

ARNOLD, M .

POLYMER BULLETIN, 1991, 27 (01) :1-8

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