Liquid Crystalline Side-Chain Polysiloxanes with 4-Amino-4'-Stilbene- Carboxylic Ester Mesogens

Abstract

The liquid crystalline phases of polysiloxanes have been characterized by DSC, optical microscopy, and powder X-ray diffraction. The polysiloxanes form monolayers at the air/water interface with molecular areas of 30 - 35 A(2), and the films do not collapse at pressures of about 40 mN/m. The monolayers of CPS-1 and -2 showed good stability on water compared to those of HPS-1 and -2 as measured by isobaric surface area changes as a function of time. Moreover, there was little hysteresis between isotherms obtained by compression and subsequent decompression below 40 mN/m for CPS-1 and -2.

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Document Details

Document Type
Technical Report
Publication Date
Dec 09, 1993
Accession Number
ADA274510

Entities

People

  • Marietta O. Bautista
  • Matthias Naumann
  • R. S. Duran
  • Warren T. Ford

Organizations

  • Oklahoma State University–Stillwater

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Civil Engineering
  • Compression
  • Diffraction
  • Films
  • Isotherms
  • Materials
  • Microscopy
  • Military Research
  • Monomolecular Films
  • Phase
  • Phase Transformations
  • Polymers
  • Transition Temperature
  • United States
  • X Rays
  • X-Ray Diffraction

Readers

  • Polymer Science and Technology
  • Underwater engineering and Marine Technology.