NUCLEAR RESONANCE SPECTROSCOPY OF ELASTOMER SOLUTIONS,

Abstract

Nuclear magnetic resonance spectra at 25 Mc/s of the elastomers polyisobutylene, polybutadiene (SKB), divinyl rubber and natural rubber were obtained for their solutions in CC14 and partly in benzene. For polyisobutylene solutions, a study of the dependence of the CH3 peak width upon the concentration of the solution showed that the width tends to a limiting value of ca. 5 c/s at infinite dilution, the value apparently not being connected with the reduced viscosity. The chemical shifts of the characteristic groups of the polymers are given. A chemical shift for the protons was found directly in block polybutadiene SKB. A method for determining the composition of polybutadiene by means of NMR spectra is proposed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1965
Accession Number
AD0615258

Entities

People

  • N. M. Sergeev
  • V. L. Karpov

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Chemical Shifts
  • Elastomers
  • Magnetic Resonance
  • Natural Rubber
  • Nuclear Magnetic Resonance
  • Nuclear Resonance
  • Polybutadiene
  • Polymers
  • Resonance
  • Rubber
  • Spectra
  • Spectroscopy
  • Synthetic Rubber

Fields of Study

  • Chemistry

Readers

  • Molecular Photonics/Laser Physics
  • Polymer Science and Technology
  • Theoretical Analysis.