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High temperature stable OH-terminated poly(3,3,3-trifluoropropylmethylsiloxane/silphenylene) copolymer stationary phases for capillary gas chromatography

✍ Scribed by Wolfgang Blum; Reiner Aichholz

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
345 KB
Volume
3
Category
Article
ISSN
1040-7685

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✦ Synopsis

Abstract

The unexpectedly good thermal stability of OH‐terminated 3, 3, 3‐trifluoropropylmethylsiloxane/silarylene copolymers can be attributed to both the inclusion of bulky aromatic units in the polysiloxane backbone and to an autocrosslinking process taking place at temperatures above 370°C, being specific for trifluoropropyl substituted polysiloxanes. The crosslinking mechanism is discussed. Both new OH‐terminated phases, sildiphenylene/trifluoropropylmethyl and sildiphenylene ether/trifluoropropylmethyl‐polysiloxane (SA‐TF and SDPE‐TF) were characterized, and their performance at high temperatures (>400°C) is demonstrated.

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