Unimolecular and Bimoleculare Exchange Reactiions in Controlled Radical Polymerization.

Abstract

Well defined polymers can be produced by radical polymerization using three different approaches: degenerative, transfer, reversible homolytic cleavage of covalent species, and reversible homolytic cleavage of persistent radicals. The first method requires high degenerative transfer coefficients but allows for slow initiation; the other two methods require that the equilibrium be strongly shifted towards dormant species, and that initiation is fast. All three approaches may provide controlled polymerizations, but not living polymerizations, because chain breaking reactions can not be eliminated although their contribution can be strongly reduced.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1995
Accession Number
ADA295862

Entities

People

  • D. Greszta
  • D. Mardare
  • K. Matyjaszewski
  • S. Gaynor
  • T. Shigemoto

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acids
  • Alkenes
  • Block Copolymers
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Coefficients
  • Copolymers
  • Exchange Reactions
  • Kinetics
  • Metals
  • Military Research
  • Molecular Weight
  • Polymerization
  • Polymers
  • Transition Metals

Fields of Study

  • Chemistry

Readers

  • Neurotrauma and Rehabilitation Medicine.
  • Organic Chemistry
  • Theoretical Analysis.