Abstract
Poly (diphenoxyphosphazene), [NP(OC6H5)2]n was subjected to thermal degradation studies over the temperature range of 100–400°, and the reaction products were analyzed by gel permeation chromatography, solution viscosity, and mass spectrometry. A general lowering of the molecular weight with increasing temperature was observed at temperatures above 100°. An initial sharp decrease in molecular weight was ascribed to chain cleavage at weak points along the backbone, and the formation of cyclic oligomers appeared to result from a subsequent cyclization-depolymerization process. The mechanism whereby chlorobenzene is formed as a trace fragmentation species is discussed. Depolymerizations in solution at temperatures between 30 and 161° were also studied.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 571-575 |
| Number of pages | 5 |
| Journal | Macromolecules |
| Volume | 7 |
| Issue number | 5 |
| DOIs | |
| State | Published - Sep 1 1974 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry
Cite this
}
The Thermal Breakdown of Poly(diphenoxyphosphazene). / Allcock, Harry R.; Moore, G. Y.; Cook, W. J.
In: Macromolecules, Vol. 7, No. 5, 01.09.1974, p. 571-575.Research output: Contribution to journal › Article
TY - JOUR
T1 - The Thermal Breakdown of Poly(diphenoxyphosphazene)
AU - Allcock, Harry R.
AU - Moore, G. Y.
AU - Cook, W. J.
PY - 1974/9/1
Y1 - 1974/9/1
N2 - Poly (diphenoxyphosphazene), [NP(OC6H5)2]n was subjected to thermal degradation studies over the temperature range of 100–400°, and the reaction products were analyzed by gel permeation chromatography, solution viscosity, and mass spectrometry. A general lowering of the molecular weight with increasing temperature was observed at temperatures above 100°. An initial sharp decrease in molecular weight was ascribed to chain cleavage at weak points along the backbone, and the formation of cyclic oligomers appeared to result from a subsequent cyclization-depolymerization process. The mechanism whereby chlorobenzene is formed as a trace fragmentation species is discussed. Depolymerizations in solution at temperatures between 30 and 161° were also studied.
AB - Poly (diphenoxyphosphazene), [NP(OC6H5)2]n was subjected to thermal degradation studies over the temperature range of 100–400°, and the reaction products were analyzed by gel permeation chromatography, solution viscosity, and mass spectrometry. A general lowering of the molecular weight with increasing temperature was observed at temperatures above 100°. An initial sharp decrease in molecular weight was ascribed to chain cleavage at weak points along the backbone, and the formation of cyclic oligomers appeared to result from a subsequent cyclization-depolymerization process. The mechanism whereby chlorobenzene is formed as a trace fragmentation species is discussed. Depolymerizations in solution at temperatures between 30 and 161° were also studied.
UR - http://www.scopus.com/inward/record.url?scp=0342409540&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0342409540&partnerID=8YFLogxK
U2 - 10.1021/ma60041a007
DO - 10.1021/ma60041a007
M3 - Article
AN - SCOPUS:0342409540
VL - 7
SP - 571
EP - 575
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 5
ER -