High-Molecular Compounds (Selected Articles).

Abstract

During the study of anionic polymerization of methylmethacrylate (MMA) in solution of toluene on p-C4H9Li in presence of syndiotactic polymethylmethcrylate (PMMA -polymethyl methacrylate) we discovered new stereochemical effects. As is known, with anionic polymerization of MMA in solution of toluene is formed isotactic PMMA of following configuration composition: I=76, H=15, S=9%. The additions of the preliminarily obtained isotactic samples of PMMA do not have an effect on the structure of newly forming isotactic PMMA under the same conditions of polymerization. On the contrary, the additive of syndiotactic PMMA (I=2,6, H: = 32,4, S=65%), capable of forming stero-complex with isotactic PMMA, leads to a substantial changes in the polymerization and structure of the generatrix of polymer.

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Document Details

Document Type
Technical Report
Publication Date
Sep 04, 1987
Accession Number
ADA185427

Entities

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acetylenes
  • Acids
  • Alkynes
  • Boiling Point
  • Chemical Synthesis
  • Chemistry
  • Foreign Technology
  • Hydrochloric Acid
  • Machine Translation
  • Methacrylates
  • Molecular Weight
  • Organic Chemistry
  • Polymerization
  • Polymers
  • Polymethyl Methacrylate
  • Translations
  • Vision Disorders

Fields of Study

  • Chemistry

Readers

  • Polymer Science and Technology