STUDY OF MOLECULAR-DYNAMICS OF A NEMATIC MAIN-CHAIN LIQUID-CRYSTALLINE POLYESTER BY DIELECTRIC-SPECTROSCOPY

被引：3
|
作者：
MUCHA, M [1 ]
BLUMSTEIN, A [1 ]
机构：
[1] UNIV MASSACHUSETTS,DEPT CHEM,LOWELL,MA 01854
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1994年 / 249卷
基金：
美国国家科学基金会;
关键词：
D O I：
10.1080/10587259408038656
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Dielectric spectroscopy was applied to study the molecular dynamics of a nematic main-chain liquid crystalline polyester using a Du Pont Dielectric Analyser. The dielectric measurements covered a frequency range from 0.03 to 100000Hz and a temperature range from -100 to 160 degrees C leading from the transition region up to the isotropic fluid region. Dielectricrelaxation processes alpha,beta,gamma and delta were observed and analysed. Apparent activation energies of the processes were calculated.
引用
收藏
页码：61 / 74
页数：14
相关论文
共 50 条
  • [41] DIELECTRIC-RELAXATION SPECTROSCOPY AND MOLECULAR-DYNAMICS OF A LIQUID-CRYSTALLINE POLYACRYLATE CONTAINING SPIROPYRAN GROUPS
    KELLAR, EJC
    WILLIAMS, G
    KRONGAUZ, V
    YITZCHAIK, S
    JOURNAL OF MATERIALS CHEMISTRY, 1991, 1 (03) : 331 - 337
  • [42] DIELECTRIC-SPECTROSCOPY ON 2 CONCENTRATIONS OF A MIXTURE OF LOW AND HIGH MOLECULAR LIQUID-CRYSTALLINE COMPOUNDS
    KRESSE, H
    STETTIN, H
    KOSTROMIN, SG
    SHIBAEV, VP
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1990, 178 : 1 - 9
  • [43] MOLECULAR-DYNAMICS OF LIQUID-CRYSTALLINE SIDE-CHAIN POLYMERS - THE DIELECTRIC-RELAXATION BEHAVIOR OF A SILOXAN POLYMER IN THE NEMATIC AND ISOTROPIC PHASES
    ATTARD, GS
    WILLIAMS, G
    GRAY, GW
    LACEY, D
    GEMMEL, PA
    POLYMER, 1986, 27 (02) : 185 - 189
  • [44] Chain folding in liquid-crystalline main-chain polymers with a smectic phase
    Vix, A
    Stocker, W
    Stamm, M
    Wilbert, G
    Zentel, R
    Rabe, JP
    MACROMOLECULES, 1998, 31 (26) : 9154 - 9159
  • [45] The role of crystallinity in the deformation of main-chain liquid-crystalline copolyesters
    Salahshoor-Kordestani, S
    Hanna, S
    Windle, AH
    POLYMER, 2000, 41 (17) : 6619 - 6626
  • [46] Main-chain liquid-crystalline polymers bearing different anion
    Bai, Lu
    Zhang, Jungang
    Teng, Yi
    Gao, Zilu
    Wang, Jiwei
    Meng, Fanbao
    LIQUID CRYSTALS, 2023, 50 (02) : 260 - 269
  • [47] SYNTHESIS AND PROPERTIES OF MAIN-CHAIN LIQUID-CRYSTALLINE POLYURETHANE ELASTOMERS
    HE, XD
    JIA, XD
    YU, XH
    JOURNAL OF APPLIED POLYMER SCIENCE, 1994, 54 (02) : 207 - 218
  • [48] VISCOELASTIC PROPERTIES OF A MODEL MAIN-CHAIN LIQUID-CRYSTALLINE POLYETHER
    GILLMOR, JR
    COLBY, RH
    HALL, E
    OBER, CK
    JOURNAL OF RHEOLOGY, 1994, 38 (05) : 1623 - 1638
  • [49] MOLECULAR-DYNAMICS IN SOME SIDE-CHAIN LIQUID-CRYSTALLINE POLYMERS
    BORMUTH, FJ
    HAASE, W
    LIQUID CRYSTAL CHEMISTRY, PHYSICS, AND APPLICATIONS, 1989, 1080 : 232 - 239
  • [50] DIFFUSION AND MELT VISCOSITY OF A MAIN-CHAIN LIQUID-CRYSTALLINE POLYETHER
    HALL, E
    OBER, CK
    KRAMER, EJ
    COLBY, RH
    GILLMOR, JR
    MACROMOLECULES, 1993, 26 (15) : 3764 - 3771
12345