Polymer Characterization by 13C Nuclear Magnetic Resonance (NMR) spectroscopy: Acryloid K125-EA and High Molecular Weight PIBM

Abstract

Double precision Fourier transform 13C nuclear magnetic resonance (NMR) spectroscopy was used to determine the microstructure of Acryloid K125-EA and high molecular weight poly(isobutyl methacrylate), PIBM. The PIBM was found to exhibit Bernoullian behavior and to have a predominately syndiotactic structure with only isolated meso additions. The triad distribution showed that only 5% of the monomer units occur in runs of three like configurations or longer. The Acryloid K125-EA was found to consist of 82 mole % methyl methacrylate, 12 mole % ethyl acrylate and 6 mole % butyl acrylate. Like the PIBM, this polymer was also found to have a predominately syndiotactic structure with more racemic additions than meso additions.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1980
Accession Number
ADA082295

Entities

People

  • Linda L. Szafraniec

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acrylates
  • Alkenes
  • Biomedical And Dental Materials
  • Chemical Shifts
  • Chemistry
  • Copolymers
  • High Resolution
  • Macromolecules
  • Magnetic Resonance
  • Methacrylates
  • Microstructure
  • New York
  • Nuclear Magnetic Resonance
  • Polymers
  • Probability
  • Statistical Analysis
  • Synthetic Polymers

Readers

  • Organic Chemistry
  • Polymer Science and Engineering.
  • Snow Cover Descriptors for Reptiles and Their Illustrations.