THE SYNTHESIS AND CHARACTERIZATION OF SPIRO POLYMERS,
Abstract
The synthesis of the first completely organic spiro polymers is reported. This was accomplished by the acid-catalyzed condensation of pentaerythritol with 1,4-cyclohexanedione and with 1,10-cyclooctadecanedione. The temperature at which 50% decomposition occurs of these polymers was determined by thermo-gravimetric analysis and was found to be in the 400-450C range, which was higher than expected for nonaromatic, oxygen-containing polymers. The proof of structure of these spiro polymers, in which they were shown to be linear polyspiroketals rather than randomly cross-linked polymers, was accomplished by infrared analysis, elemental analysis, X-ray crystallography, intrinsic viscosity measurements, and solubility studies. Several other spiro polymers of lower molecular weight were synthesized and a correlation between molecular weight and thermal stability, as well as solubility, was observed. Finally, a copolymer of pentaerythritol, 1,4-cyclohexanedione and 1,10-cyclooctadecanedione was synthesized and its thermal properties, solubility characteristics, and molecular structure were studied. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 09, 1966
- Accession Number
- AD0641873
Entities
People
- Angelo A. Volpe
- William J. Bailey
Organizations
- Naval Ordnance Laboratory