Thermolysis of Poly [bis(trifluoroethoxy)phosphazene]

H. R. Allcock; W. J. Cook

doi:10.1021/ma60039a006

Thermolysis of Poly [bis(trifluoroethoxy)phosphazene]

H. R. Allcock, W. J. Cook

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

Poly[bis(trifluoroethoxy)phosphazene], [NP(OCH₂CF₃)₂]_n, depolymerizes at temperatures above 150° to yield the cyclic trimer, tetramer, pentamer, higher oligomers, and medium molecular weight polymers. The reactions were studied by the use of gel permeation chromatography, mass spectrometry, and solution viscosity. At temperatures near 400°, depolymerization of some polymer samples was accompanied by the elimination of small amounts of gaseous ClCH₂CF₃. This constitutes a diagnostic test for the presence of residual P-Cl bonds in the polymer. The depolymerization was also studied in the presence of acidic and basic reagents and in solution: acids accelerate the depolymerization. The reaction mechanisms are discussed. The thermal behavior of [NP(OCH₂CF₂CF₂H)₂]_n is also described.

Original language	English (US)
Pages (from-to)	284-290
Number of pages	7
Journal	Macromolecules
Volume	7
Issue number	3
DOIs	https://doi.org/10.1021/ma60039a006
State	Published - May 1 1974

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1021/ma60039a006

Cite this

@article{b97fb700bef34a65801799bc8b7e6a1c,

title = "Thermolysis of Poly [bis(trifluoroethoxy)phosphazene]",

abstract = "Poly[bis(trifluoroethoxy)phosphazene], [NP(OCH2CF3)2]n, depolymerizes at temperatures above 150° to yield the cyclic trimer, tetramer, pentamer, higher oligomers, and medium molecular weight polymers. The reactions were studied by the use of gel permeation chromatography, mass spectrometry, and solution viscosity. At temperatures near 400°, depolymerization of some polymer samples was accompanied by the elimination of small amounts of gaseous ClCH2CF3. This constitutes a diagnostic test for the presence of residual P-Cl bonds in the polymer. The depolymerization was also studied in the presence of acidic and basic reagents and in solution: acids accelerate the depolymerization. The reaction mechanisms are discussed. The thermal behavior of [NP(OCH2CF2CF2H)2]n is also described.",

author = "Allcock, {H. R.} and Cook, {W. J.}",

year = "1974",

month = may,

day = "1",

doi = "10.1021/ma60039a006",

language = "English (US)",

volume = "7",

pages = "284--290",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "3",

}

TY - JOUR

T1 - Thermolysis of Poly [bis(trifluoroethoxy)phosphazene]

AU - Allcock, H. R.

AU - Cook, W. J.

PY - 1974/5/1

Y1 - 1974/5/1

N2 - Poly[bis(trifluoroethoxy)phosphazene], [NP(OCH2CF3)2]n, depolymerizes at temperatures above 150° to yield the cyclic trimer, tetramer, pentamer, higher oligomers, and medium molecular weight polymers. The reactions were studied by the use of gel permeation chromatography, mass spectrometry, and solution viscosity. At temperatures near 400°, depolymerization of some polymer samples was accompanied by the elimination of small amounts of gaseous ClCH2CF3. This constitutes a diagnostic test for the presence of residual P-Cl bonds in the polymer. The depolymerization was also studied in the presence of acidic and basic reagents and in solution: acids accelerate the depolymerization. The reaction mechanisms are discussed. The thermal behavior of [NP(OCH2CF2CF2H)2]n is also described.

AB - Poly[bis(trifluoroethoxy)phosphazene], [NP(OCH2CF3)2]n, depolymerizes at temperatures above 150° to yield the cyclic trimer, tetramer, pentamer, higher oligomers, and medium molecular weight polymers. The reactions were studied by the use of gel permeation chromatography, mass spectrometry, and solution viscosity. At temperatures near 400°, depolymerization of some polymer samples was accompanied by the elimination of small amounts of gaseous ClCH2CF3. This constitutes a diagnostic test for the presence of residual P-Cl bonds in the polymer. The depolymerization was also studied in the presence of acidic and basic reagents and in solution: acids accelerate the depolymerization. The reaction mechanisms are discussed. The thermal behavior of [NP(OCH2CF2CF2H)2]n is also described.

UR - http://www.scopus.com/inward/record.url?scp=0346731378&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0346731378&partnerID=8YFLogxK

U2 - 10.1021/ma60039a006

DO - 10.1021/ma60039a006

M3 - Article

AN - SCOPUS:0346731378

SN - 0024-9297

VL - 7

SP - 284

EP - 290

JO - Macromolecules

JF - Macromolecules

IS - 3

ER -

Thermolysis of Poly [bis(trifluoroethoxy)phosphazene]

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this