Email this article Hydrolytic polycondensation of methylalkoxysilanes under pressure
- Authors: Kalinina A.A.1,2, Kholodkov D.N.1,2, Meshkov I.B.1,2, Pigaleva M.A.2,3, Elmanovich I.V.2,3, Molodtsova Y.A.2, Gallyamov M.O.2,3, Muzafarov A.M.1,2
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Affiliations:
- N. S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
- Faculty of Physics, M. V. Lomonosov Moscow State University
- Issue: Vol 65, No 4 (2016)
- Pages: 1104-1109
- Section: Full Articles
- URL: https://journals.rcsi.science/1066-5285/article/view/237923
- DOI: https://doi.org/10.1007/s11172-016-1419-7
- ID: 237923
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Abstract
Hydrolytic polycondensation of methytrialkoxysilanes under the pressure in water and in carbonic acid was investigated. It is shown, that both processes proceed with full conversion of the monomer to form a low molecular soluble polymethylsilsesquioxanes. However, they have a different structure: in water branched compounds were produced and in carboxylic acid polycyclic compounds were synthesized. A type of alkoxy group affects the course of the process. In the case of hydrolytic polycondensation of methyltriethoxysilane under the pressure, unlike methyltrimethoxysilane, full conversion is observed only when additional homogenization of the reaction mixture takes place by vigorous stirring or increasing temperature of the process.
About the authors
A. A. Kalinina
N. S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences; A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: aziz@ineos.ac.ru
Russian Federation, 70 ul. Profsoyuznaya, Moscow, 117393; 28 ul. Vavilova, Moscow, 119991
D. N. Kholodkov
N. S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences; A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: aziz@ineos.ac.ru
Russian Federation, 70 ul. Profsoyuznaya, Moscow, 117393; 28 ul. Vavilova, Moscow, 119991
I. B. Meshkov
N. S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences; A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: aziz@ineos.ac.ru
Russian Federation, 70 ul. Profsoyuznaya, Moscow, 117393; 28 ul. Vavilova, Moscow, 119991
M. A. Pigaleva
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Faculty of Physics, M. V. Lomonosov Moscow State University
Email: aziz@ineos.ac.ru
Russian Federation, 28 ul. Vavilova, Moscow, 119991; 1 Leninskie Gory, Moscow, 119991
I. V. Elmanovich
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Faculty of Physics, M. V. Lomonosov Moscow State University
Email: aziz@ineos.ac.ru
Russian Federation, 28 ul. Vavilova, Moscow, 119991; 1 Leninskie Gory, Moscow, 119991
Ya. A. Molodtsova
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Email: aziz@ineos.ac.ru
Russian Federation, 28 ul. Vavilova, Moscow, 119991
M. O. Gallyamov
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Faculty of Physics, M. V. Lomonosov Moscow State University
Email: aziz@ineos.ac.ru
Russian Federation, 28 ul. Vavilova, Moscow, 119991; 1 Leninskie Gory, Moscow, 119991
A. M. Muzafarov
N. S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences; A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
Author for correspondence.
Email: aziz@ineos.ac.ru
Russian Federation, 70 ul. Profsoyuznaya, Moscow, 117393; 28 ul. Vavilova, Moscow, 119991
