Properties of Some Diblock Copolymers Based on 1,3 Butadiene Monomer.

Abstract

The properties of three series of diblock copolymers are discussed. One series of polymers is comprised of two diblock copolymers of polystyrene and 1,2 polybutadiene in which the polybutadiene microstructure is essentially pure 1,2 addition. Hydrogenation of these polymers leads to a second set of block copolymers of polystyrene and polybutene-1. The polybutene-1 segments are atactic and therefore exhibit amorphous, rubbery behavior. A third series of samples contains four diblock copolymers of 1,4 polybutadiene and 1,2 polybutadiene; microphase separation is observed for these 1,4 polybutadiene/1,2 polybutadiene materials. Results of small-amplitude forced-oscillation mechanical tests and of large deformation constant rate of strain measurements are reported and discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 25, 1980
Accession Number
ADA090144

Entities

People

  • David E. Wilfong
  • Jose M. Torradas
  • Robert E. Cohen

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Alkanes
  • Biomedical And Dental Materials
  • Block Copolymers
  • Butadienes
  • Chemical Engineering
  • Copolymers
  • Dielectric Polymers
  • Engineering
  • Materials
  • Mechanical Properties
  • Physical Properties
  • Polybutadiene
  • Polymeric Films
  • Polymers
  • Stress Strain Relations
  • Stresses
  • Synthetic Rubber

Readers

  • Polymer Science and Technology

Technology Areas

  • Microelectronics