Progress on Polymer Degradation by Photoelectron Transfer
Abstract
1,5-Bis(3-hydroxypropoxy)-9,10-dimethoxyanthracene has been prepared and incorporated into poly (2-butynediyl oxalate). The photolysis results of the copolymer are described. Progress toward the preparation of 2-(4- carboxyphthalimoyl)-9,10- dimethoxyanthracene from 2-amino-9, 10-anthraquinone and mellitic anhydride is described is described. Synthetic intermediates have been characterized by ultraviolet visible, infrared and proton nuclear magnetic resonance spectroscopy. For some time this laboratory has been interested in energy absorptive materials, specifically polymers which could decompose cleanly to gaseous products on thermal or photic excitation. We recently reported the synthesis of some unsaturated polyoxalates according to the following equation and their characterization. The thermal decomposition of these polymers was studied by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and mass spectroscopy. The polymers were characterized by 1H-NMR spectra run in DMSO-d6. Since the chemical shifts of the end groups were sufficiently different from those of the internal groups, it is possible to determine molecular weights and degree of polymerization (DP) values by NMR end group analysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1991
- Accession Number
- ADA246276
Entities
People
- David E. Remy
- John W. Cullen
- Stephen J. Weininger
Organizations
- United States Army Soldier Systems Center