Radical Polymerization of Vinyl Acetate in the Presence of Trialkyl Phosphites

Abstract

Radical polymerization of vinyl acetate initiated by BPO in the presence of different phosphites was studied. As it was observed, trialkylphosphites enhance polymerization rates. The molecular weights of polymers are affected by the initiator concentration and can be adjusted to higher or lower values. Polydispersities do not change with conversion and are lower than for PVAc obtained with BPO as an initiator (usually M sub w /M sub n = 1.6 to 1.7 for BPO/TFEP as an initiating system.). The presence of pentavalent phosphorous atoms in the BPO/TFEP system as well as in polymer obtained with that system was revealed by 31PNMR spectroscopy.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1994
Accession Number
ADA280829

Entities

People

  • Daniela Mardare
  • Dorota Greszta
  • Krzysztof Matyjaszewski

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Chemistry
  • Conversion
  • Explosives Initiators
  • Free Radicals
  • Magnetic Resonance
  • Military Research
  • Molecular Weight
  • Nuclear Magnetic Resonance
  • Phosphorus Compounds
  • Polymerization
  • Resonance
  • United States
  • United States Government

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry
  • Polymer Science and Technology