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Rheology and Optical Properties of Thermotropic Liquid Crystalline Polymers

Rheology and Optical Properties of Thermotropic Liquid Crystalline Polymers
热致液晶聚合物的流变学和光学性质
批准号:
9101323
负责人:
H. Henning Winter
金额:
$37.06万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-08-01 至 1995-01-31

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中文摘要
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英文摘要
Novel applications of thermotropic liquid crystalline polymers (TLCP) are currently prevented by the lack of understanding of the structure formation processes in the liquid crystalline state and during solidification (transition to the crystal state). Such understanding is required for controlling mechanical, electrical, and optical properties which not only depend on the intrinsic molecular properties but also on the large-scale texture. This research involves a cooperative study of the structuring of TLCPs in rheological and magnetic fields. Light scattering and microscopy (R.S. Stein) and rheology (H.H. Winter) will be applied to specifically synthesized samples (Polaroid) and the magnetic field of a laboratory will be utilized to create the necessary alignment. Intermediate textural states will be produced by applying well-defined mechanical and electrical fields. The study of the field induced monodomain will give the intrinsic properties (Miesowicz viscosities, Frank elastic constants) which are needed to understand the behavior of polydomains. The natural polydomain and intermediate disclination densities will be studied to lay the foundation for practical applications (design of suitable processing equipment) as well as for a theoretical description of polydomain TLCPs.
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Collaborative Research: Self-Exfoliation as Promising Route to Novel Nanocomposite Processing
  • 批准号:
    1334460
  • 项目类别:
    Standard Grant
  • 资助金额:
    $36.61万
  • 财政年份:
    2013
  • 负责人:
    H. Henning Winter
  • 依托单位:
2007 Gordon Research Conference on Elastomers, Networks, and Gels, July 15-20, 2007, New London, NH
  • 批准号:
    0710962
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.4万
  • 财政年份:
    2007
  • 负责人:
    H. Henning Winter
  • 依托单位:
MRI: Development of a Filament Stretching Rheometer and Shear Micro-Rheometer with Optical Access for Measurements of Complex Fluids
  • 批准号:
    0421043
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2004
  • 负责人:
    H. Henning Winter
  • 依托单位:
Pore Formation during the Crystallization of Crosslinked Polymers which are Swollen in Supercritical Fluids
  • 批准号:
    0107156
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $21.78万
  • 财政年份:
    2001
  • 负责人:
    H. Henning Winter
  • 依托单位:
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