Properties and Morphology of Amorphous Hydrocarbon Block Copolymers.

Abstract

The purpose of this review is to discuss the more recent advances in the investigation of the relation between the morphology of block copolymers and their properties. First we shall discuss the thermodynamic conditions under which homogeneous block copolymers can be formed. These homogeneous systems are interesting because their underlying chain dynamics can be treated by the accepted molecular models. Viscoelastic relaxation times computed from these theories are in good agreement with experimental data. Next we present some examples of block copolymer morphologies, taken from the electron micrographs now available in the literature. Statistical theories capable of satisfactorily explaining the observed morphologies are then briefly discussed. Finally the elastic, viscoelastic and rheological properties of these materials are described. In all instances the dominant influence of the microdomain structure on these properties is demonstrated.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1978
Accession Number
ADA052441

Entities

People

  • Mitchel Shen

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Biomedical And Dental Materials
  • Block Copolymers
  • Chemical Compounds
  • Chemical Engineering
  • Chemistry
  • Composite Materials
  • Copolymers
  • Engineered Materials
  • Experimental Data
  • Hydrocarbons
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Military Research
  • Stresses

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Technology
  • Systems Analysis and Design

Technology Areas

  • Microelectronics