SPECTRAL STUDIES AND THERMAL-PROPERTIES OF A URETHANE-SUBSTITUTED POLYTHIOPHENE

被引:13
|
作者
LIU, MJ [1 ]
GREGORY, RV [1 ]
机构
[1] CLEMSON UNIV,SCH TEXT FIBER & POLYMER SCI,CLEMSON,SC 29631
关键词
SPECTRAL STUDIES; THERMAL PROPERTIES; URETHANE; POLYTHIOPHENE;
D O I
10.1016/0379-6779(94)02317-R
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A new polythiophene containing a urethane side chain in the beta-position was chemically polymerized in chloroform using FeCl3 as the oxidant. The urethane-substituted polythiophene is soluble not only in common organic solvents, such as chloroform and tetrahydrofuran, but also in strong polar solvents such as N,N-dimethylformamide, N,N-dimethylacetamide and N-methyl-2-pyrrolidinone. This allows the polymer to be blended with conventional polymers, such as polyurethane, polyacrylonitrile, polyamide, polycarbonate and polyester, in solution while maintaining good electrical conductivity. The structures of the monomer and polymer were characterized using NMR, IR, molecular weight and elemental analysis. The spectral results suggest that the chain order of this polymer is quite regular. M(w) and M(n) of this polymer obtained by gel permeation chromatography are 169 284 and 63 557, respectively. This polythiophene containing a urethane side chain also demonstrates solvatochromic behavior which was characterized by UV-Vis absorption spectroscopy. Glass transition temperatures obtained by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA) studies are 62 and 73 degrees C, respectively, and the melting point of this polymer measured by DSC is 265 degrees C. Thermogravimetric analysis results indicate that this polymer is a thermally stable material.
引用
收藏
页码:45 / 49
页数:5
相关论文
共 50 条
  • [21] EFFECT OF PROCESS VARIABLES ON THE THERMAL-PROPERTIES OF SOME RIGID URETHANE FOAMS
    NEET, TE
    PARKER, BG
    SMITH, CH
    ADVANCES IN URETHANE SCIENCE AND TECHNOLOGY, 1981, 8 : 155 - 170
  • [22] THE EFFECT OF ANNEALING ON THE THERMAL-PROPERTIES OF REACTION INJECTION MOLDED URETHANE ELASTOMERS
    DOMINGUEZ, RJG
    POLYMER ENGINEERING AND SCIENCE, 1981, 21 (18): : 1210 - 1217
  • [23] Ultraviolet photoelectron spectroscopy study of the thermochromic phase transition in urethane-substituted polydiacetylenes
    Wang, Xiaoyu
    Whitten, James E.
    Sandman, Daniel J.
    JOURNAL OF CHEMICAL PHYSICS, 2007, 126 (18):
  • [24] PREPARATION AND THERMAL-PROPERTIES OF HIGHLY SUBSTITUTED BENZYL STARCH
    BRAUN, D
    STIPP, G
    STARCH-STARKE, 1994, 46 (01): : 22 - 26
  • [25] gamma-ray polymerization of urethane-substituted diacetylenes: Reactivity and chain lengths
    Spagnoli, S
    Berrehar, J
    LapersonneMeyer, C
    Schott, M
    Rameau, A
    Rawiso, M
    MACROMOLECULES, 1996, 29 (17) : 5615 - 5620
  • [26] URETHANE-SUBSTITUTED POLYDIACETYLENES - SOLID-STATE POLYMERIZATION, CRYSTAL OPTICS, AND CONFORMATIONAL TRANSITIONS
    CHANCE, RR
    ECKHARDT, H
    SWERDLOFF, M
    FEDERICI, RR
    SZOBOTA, JS
    TURI, EA
    BOUDREAUX, DS
    SCHOTT, M
    ACS SYMPOSIUM SERIES, 1987, 337 : 140 - 151
  • [27] Change in the emission color and the quantum efficiency enhancement in urethane-substituted polythiophene/tris(8-hydroxyquinoline) aluminum double layer light-emitting devices
    Jung, SD
    Zyung, T
    Kim, WH
    Lee, CJ
    Tripathy, SK
    SYNTHETIC METALS, 1999, 100 (02) : 223 - 231
  • [28] STUDIES ON THERMAL-PROPERTIES OF BISMUTH VANADATE CATALYSTS
    SINHAMAHAPATRA, PK
    BHATTACHARYYA, SK
    JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 1979, 15 (02) : 233 - 249
  • [29] STUDIES ON THE THERMAL-PROPERTIES OF PVC - POLYSTYRENE ALLOY
    EBOATU, AN
    OLOJO, DO
    MOMOH, M
    JOURNAL OF APPLIED POLYMER SCIENCE, 1989, 37 (09) : 2485 - 2489
  • [30] STUDIES ON THERMAL-PROPERTIES OF CADMIUM TUNGSTATE CATALYST
    SINHAMAHAPATRA, PK
    BHATTACHARYYA, SK
    JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 1976, 53 (07) : 722 - 723