Abstract
High polymeric organophosphazenes have been synthesized with trichloroethoxy side groups either as the sole substituents or as cosubstituents with trifluoroethoxy, phenoxy, or methoxyethoxyethoxy groups. Initially, small-molecule model compound studies were carried out between sodium trichloroethoxide and hexachlorocyclotriphosphazene at ambient temperature to yield the fully substituted product hexakis(trichloroethoxy)cyclotriphosphazene as a prelude to the synthesis of high polymeric trichloroethoxy homo-and cosubstituted phosphazenes. The cyclic trimeric and polymeric species were characterized by 1H and 31P NMR, GPC, and DSC techniques. Physical property comparisons were made with the long-established elastomers that contain both trifluoroethoxy and longer chain fluoroalkoxy side groups by the use of DSC, TGA, and limited oxygen index tests. The introduction of trichloroethoxy side groups further improves the resistance of these polymers to combustion.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 9085-9091 |
| Number of pages | 7 |
| Journal | Macromolecules |
| Volume | 45 |
| Issue number | 22 |
| DOIs | |
| State | Published - Nov 27 2012 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry
Cite this
}
Trichloroethoxy-substituted polyphosphazenes : Synthesis, characterization, and properties. / Chen, Chen; Liu, Xiao; Tian, Zhicheng; Allcock, Harry R.
In: Macromolecules, Vol. 45, No. 22, 27.11.2012, p. 9085-9091.Research output: Contribution to journal › Article
TY - JOUR
T1 - Trichloroethoxy-substituted polyphosphazenes
T2 - Synthesis, characterization, and properties
AU - Chen, Chen
AU - Liu, Xiao
AU - Tian, Zhicheng
AU - Allcock, Harry R.
PY - 2012/11/27
Y1 - 2012/11/27
N2 - High polymeric organophosphazenes have been synthesized with trichloroethoxy side groups either as the sole substituents or as cosubstituents with trifluoroethoxy, phenoxy, or methoxyethoxyethoxy groups. Initially, small-molecule model compound studies were carried out between sodium trichloroethoxide and hexachlorocyclotriphosphazene at ambient temperature to yield the fully substituted product hexakis(trichloroethoxy)cyclotriphosphazene as a prelude to the synthesis of high polymeric trichloroethoxy homo-and cosubstituted phosphazenes. The cyclic trimeric and polymeric species were characterized by 1H and 31P NMR, GPC, and DSC techniques. Physical property comparisons were made with the long-established elastomers that contain both trifluoroethoxy and longer chain fluoroalkoxy side groups by the use of DSC, TGA, and limited oxygen index tests. The introduction of trichloroethoxy side groups further improves the resistance of these polymers to combustion.
AB - High polymeric organophosphazenes have been synthesized with trichloroethoxy side groups either as the sole substituents or as cosubstituents with trifluoroethoxy, phenoxy, or methoxyethoxyethoxy groups. Initially, small-molecule model compound studies were carried out between sodium trichloroethoxide and hexachlorocyclotriphosphazene at ambient temperature to yield the fully substituted product hexakis(trichloroethoxy)cyclotriphosphazene as a prelude to the synthesis of high polymeric trichloroethoxy homo-and cosubstituted phosphazenes. The cyclic trimeric and polymeric species were characterized by 1H and 31P NMR, GPC, and DSC techniques. Physical property comparisons were made with the long-established elastomers that contain both trifluoroethoxy and longer chain fluoroalkoxy side groups by the use of DSC, TGA, and limited oxygen index tests. The introduction of trichloroethoxy side groups further improves the resistance of these polymers to combustion.
UR - http://www.scopus.com/inward/record.url?scp=84870225861&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870225861&partnerID=8YFLogxK
U2 - 10.1021/ma301822m
DO - 10.1021/ma301822m
M3 - Article
AN - SCOPUS:84870225861
VL - 45
SP - 9085
EP - 9091
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 22
ER -