Blends of Crystallizable Polybutadiene Isomers: Compatibilization by Addition of Amorphous Diblock Copolymer

Abstract

Precipitated blends of two crystallizable polybutadiene (PBD) isomers were characterized in terms of crystallization and phase behavior, morphology, and tensile mechanical properties. The isomers are syndiotactic 1,2 PBD and trans 1,4 PBD. As predicted by Flory-Huggins theory, the blends exhibit heterogeneous behavior over the full range of composition. Tensile properties of the crystalline blends are intermediate between those of the corresponding crystalline homopolymers, while tensile properties of the amorphous blends are generally worse than either of the amorphous homopolymers. But in both cases, property enhancement is evident at approximately 10% 1,2 PBD content.

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Document Details

Document Type
Technical Report
Publication Date
Jul 24, 1991
Accession Number
ADA238879

Entities

People

  • Moira M. Nir
  • Robert E. Cohen

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Chemical Engineering
  • Chemistry
  • Crystal Structure
  • Macromolecules
  • Materials
  • Materials Science
  • Mechanical Properties
  • Microscopy
  • Molecules
  • Phase Diagrams
  • Polymer Chemistry
  • Polymers
  • Scattering
  • Tensile Properties
  • Thermodynamics
  • Transition Temperature
  • Transitions

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology

Technology Areas

  • Microelectronics