Thermal Degradation of Polyesters: Part 2. Aromatic and Semiaromatic Polymers.
Abstract
A detailed study was made of the thermal degradation of eight aliphatic polyesters and the results presented in Part I of this report. The results of a corresponding study of some polyesters containing aromatic rings in the polymer chain are now presented in Part II. Poly(hexamethylene terephthalate) degrades by the mechanism observed for aliphatic polymers--random scission and subsequent reaction of the olefinic and acid end-groups. when the acid part is aliphatic as in poly(1, 4-phenylene succinate) and poly(1, 4-phenylene sebacate), the polymers are less stable initially than comparable aliphatic polyesters. The degradation mechanism is more complex and involves cross-linking; the cross-linked sebacate product breaks down by a second degradation reaction but the succinate forms a residue which does not undergo further breakdown. jg p5
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1969
- Accession Number
- ADA306102
Entities
People
- I. J. Goldfarb
- R. Mcguchan
Organizations
- Air Force Research Laboratory