Aromatic polyesters with flexible side chains. 8. Studies on long periodical structure observed in layered crystalline phase

被引：18
|
作者：
Fu, K [1 ]
Nematsu, T [1 ]
Sone, M [1 ]
Itoh, T [1 ]
Hayakawa, T [1 ]
Ueda, M [1 ]
Tokita, M [1 ]
Watanabe, J [1 ]
机构：
[1] Tokyo Inst Technol, Dept Polymer Chem, Meguro Ku, Tokyo 1528552, Japan
来源：
MACROMOLECULES | 2000年 / 33卷 / 22期
关键词：
D O I：
10.1021/ma001056g
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Long periodical structure was studied for the crystal of a rigid-rod liquid crystalline BC-6 polyester composed of the 1,4-dihexyl ester of pyromellitic acid and 4,4'-biphenol with small-angle X-ray scattering (SAXS) and transmission electron microscope (TEM) measurements. The highly oriented crystalline fibers which were prepared by spinning a nematic melt of the sample and succeeding annealing showed well-defined scattering maxima with a spacing in the range of 250-300 Angstrom in the SAXS pattern and the corresponding clear stripes in the TEM photograph. The long spacing is attributed to the crystalline lamellae Stacked along the chain axis. This is the first example of long periodical structure in the fully aromatic polymer systems. The origin of the long periodic structure is discussed.
引用
收藏
页码：8367 / 8370
页数：4
相关论文
共 16 条
  • [1] THE STRUCTURE OF AROMATIC POLYESTERS WITH FLEXIBLE SIDE-CHAINS
    BISWAS, A
    DEUTSCHER, K
    WEGNER, G
    BLACKWELL, J
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 : 205 - POLY
  • [2] Aromatic polyesters with flexible side chains.: 10.: Studies on biaxiality in nematic liquid crystal of BC-n polyester
    Fu, Kai
    Sone, Masato
    Tokita, Masatoshi
    Watanabe, Junji
    POLYMER JOURNAL, 2006, 38 (05) : 442 - 446
  • [3] Aromatic Polyesters with Flexible Side Chains. 10. Studies on Biaxiality in Nematic Liquid Crystal of BC-n Polyester
    Kai Fu
    Masato Sone
    Masatoshi Tokita
    Junji Watanabe
    Polymer Journal, 2006, 38 : 442 - 446
  • [4] Rigid-rod polyesters with flexible side chains .6. Appearance of hexagonal columnar phase as a consequence of microsegregation of aromatic main chains and aliphatic side chains
    Watanabe, J
    Sekine, N
    Nematsu, T
    Sone, M
    Kricheldorf, HR
    MACROMOLECULES, 1996, 29 (13) : 4816 - 4818
  • [5] Layered structure and Xe sorption and diffusion properties of low-density liquid-crystalline polyesters with n-alkyl side chains
    Yoshimizu, H
    Tsukahara, M
    Suzuki, T
    Toida, J
    Ando, A
    Watanabe, J
    Tsujita, Y
    JOURNAL OF MOLECULAR STRUCTURE, 2005, 739 (1-3) : 19 - 26
  • [6] Rigid-rod polyesters with flexible side chains IX.: Phase behavior including nematic, layered, and hexagonal columnar phases in poly(p-biphenylene terephthalate) with alkoxy side chains
    Fu, K
    Sekine, N
    Sone, M
    Tokita, M
    Watanabe, J
    POLYMER JOURNAL, 2002, 34 (04) : 291 - 297
  • [7] Rigid-Rod Polyesters with Flexible Side Chains IX. Phase Behavior Including Nematic, Layered, and Hexagonal Columnar Phases in Poly(p-biphenylene terephthalate) with Alkoxy Side Chains
    Kai Fu
    Nobuhiro Sekine
    Masato Sone
    Masatoshi Tokita
    Junji Watanabe
    Polymer Journal, 2002, 34 : 291 - 297
  • [8] Phase structures, transition behaviors, and surface alignment in polymers containing a rigid rodlike backbone with flexible side chains. 2. Phase transition kinetics in a main-chain/side-chain liquid crystalline polyester
    Ge, JJ
    Zhang, AQ
    McCreight, KW
    Wang, SY
    Harris, FW
    Cheng, SZD
    MACROMOLECULES, 1998, 31 (13) : 4093 - 4101
  • [9] Phase structures and transition behaviors in polymers containing rigid rodlike backbones with flexible side chains. V. Methylene side-chain effects on structure and molecular motion in a series of polyimides
    McCreight, KW
    Ge, JJ
    Guo, MM
    Mann, I
    Li, FM
    Shen, Z
    Jin, XM
    Harris, FW
    Cheng, SZD
    JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1999, 37 (14) : 1633 - 1646
  • [10] Phase structures and transition behaviors in polymers containing rigid rodlike backbones with flexible side chains. V. Methylene side-chain effects on structure and molecular motion in a series of polyimides
    Maurice Morton Institute, Department Polymer Science, University of Akron, Akron, OH 44325-3909, United States
    J Polym Sci Part B, 14 (1633-1646):
12