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Analysis of polysiloxane fluid PFMS-5 by HPLC

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Abstract

Polymethylphenylsiloxane liquid PFMS-5 is used as a high temperature heat transfer fluid and a working fluid in the high-vacuum pumps. It is one of the most high-temperature stationary phases in gas chromatography. However, some samples have an upper temperature limit of 280 to 350°С. The composition of this fluid was studied by HPLC. For identification a set of compounds isolated by preparative gas chromatography was obtained. A previously synthesized product consisting of linear polymethylphenylsiloxanes with the number of silicon atoms from 3 to 120 was used. By using a diode array detector the UV-spectra of all the components in the obtained chromatogram were recorded. On the basis of these data it can be concluded that the liquid PFMS-5 consists of polymer homologues with the number of silicon atoms from 3 to 13. In addition to linear methylphenyloligosiloxanes methylphenylsiloxanes of other structure are present in the liquid. Linear methylphenyloligosiloxanes were identified

About the Authors

G. N. Turkeltaub
Moscow Technological University (Institute of Fine Chemical Technologies), 86, Vernadskogo pr., Moscow 119571
Russian Federation


E. A. Smirnova
Moscow Technological University (Institute of Fine Chemical Technologies), 86, Vernadskogo pr., Moscow 119571
Russian Federation


E. A. Chernyshev*
Moscow Technological University (Institute of Fine Chemical Technologies), 86, Vernadskogo pr., Moscow 119571
Russian Federation


References

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For citation:


Turkeltaub G.N., Smirnova E.A., Chernyshev* E.A. Analysis of polysiloxane fluid PFMS-5 by HPLC. Fine Chemical Technologies. 2015;10(6):83-87. (In Russ.)

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ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)