Synthesis and Small-Angle X-Ray Scattering Investigations of Ureido-Pyrimidone Hydrogen Bonding Star and Linear Poly(ethylene-co-propylene)s

Abstract

Copolymers of poly(ethylene) and poly(propylene) having ureido-pyrimidone (UPy) hydrogen bonding moieties were synthesized and their bulk morphological behavior characterized. Anionic polymerization techniques allowed the synthesis of copolymers having well-defined linear, telechelic, and star architectures in which the UPy functional groups were located at the ends of the polymer chains. Small-angle x-ray scattering was used to characterize the bulk morphologies of these materials, which were found to be microphase separated, with the hydrogen bonding UPy moieties segregating from the copolymer bulk. The characteristic length scale observed varied substantially, depending on the molecular architecture, and is most likely correlated with the separation between microphase separated UPy-rich domains.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2006
Accession Number
ADA444301

Entities

People

  • Brian D. Mather
  • Casey L. Elkins
  • Frederick L Beyer
  • Timothy E. Long

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alcohols
  • Alkenes
  • Chemical Synthesis
  • Chemistry
  • Copolymers
  • Ethylenes
  • Hydrogen
  • Macromolecules
  • Materials
  • Molecules
  • Organic Chemistry
  • Polymers
  • Propenes
  • Scattering
  • Two Dimensional
  • X Ray Scattering
  • X Rays

Readers

  • Polymer Science and Technology

Technology Areas

  • Microelectronics