A. A. Sakharova

Russian Academy of Sciences

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T. M. Frunze

Russian Academy of Sciences

ОА

О. А. Мельник

A. N. Nesmeyanov Institute of Organoelement Compounds

ТV

Тatyana V. Volkova

Institute of Solution Chemistry

ДА

Д. А. Сапожников

A. N. Nesmeyanov Institute of Organoelement Compounds

A. M. Matieva

A. N. Nesmeyanov Institute of Organoelement Compounds

Yakov S. Vygodskii

A. N. Nesmeyanov Institute of Organoelement Compounds

R. G. Gasanov

A. N. Nesmeyanov Institute of Organoelement Compounds

V.V. Korshak

A. N. Nesmeyanov Institute of Organoelement Compounds

Ya. S. Vygodskii

A. N. Nesmeyanov Institute of Organoelement Compounds

A. M. Polyakova

Russian Academy of Sciences

Cooperative Institutions

Russian Academy of Sciences

A. N. Nesmeyanov Institute of Organoelement Compounds

Lomonosov Moscow State University

N.D. Zelinsky Institute of Organic Chemistry

Institute of Synthetic Polymeric Materials

D. Mendeleyev University of Chemical Technology of Russia

Semenov Institute of Chemical Physics

Moscow State University of Fine Chemical Technologies

Moscow Aviation Institute

Moscow Architectural Institute

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Copolymers prepared on the basis of isopropenyl derivatives of o‐carborane

Die Makromolekulare Chemie (1992)

Michail M. Teplyakov Irina A. Khotina A. A. Sakharova О. А. Мельник Vladimir S. Papkov

Abstract New mono‐ and bifunctional isopropenyl derivatives of o ‐carborane were synthesized according to the Witting reaction, from the corresponding acetyl derivatives and methylenetriphenylphosphorane. The radical copolymerization with methyl methacrylate was investigated and thermal and thermomechanical characteristics of the obtained copolymers were studied. In copolymers prepared on the basis of a monofunctional carborane‐containing monomer, the increase of glass transition temperature takes practically a linear course with increasing boron content. In crosslinked copolymers the presence of o ‐carborane fragments leads to the widening of the glass transition temperature range, predominantly at low temperatures, irrespective of the type of bifunctional monomer used.

Carborane

10.1002/macp.1992.021930207

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Citations (3)

The effect of phosphorus on the high temperature pyrolysis of polymethylmethacrylate

Polymer Science U S S R (1982)

A.G. Gal'chenko N. A. Khalturinskii A. A. Sakharova Tatiana Popova T. M. Frunze

Degradation

10.1016/0032-3950(82)90079-x

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Synthesis of polymers with dicarbaundecaborate fragments

Acta Polymerica (1987)

T. M. Frunze О. А. Мельник A. A. Sakharova В. Н. Калинин

Abstract The ability of unsaturated dicarbaundecaborate derivatives to radical copolymerization with vinyl monomers is established. The copolymers of 1‐isopropenyl‐(3)‐1,2‐dicarbaundecaborate salts with methyl methacrylate and acrylonitrile are synthesized and the optimum conditions of copolymerization are found. A new method for synthesizing polymeric metallocarborane complexes, catalysts of hydrogenation and isomerization of olefines and dienes, is developed.

10.1002/actp.1987.010381202

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Citations (5)

Polymers Based on Unsaturated Derivatives of Carbaboranes

Russian Chemical Reviews (1988)

О. А. Мельник A. A. Sakharova T. M. Frunze

The literature data on the polymerisation and copolymerisation of unsaturated derivatives of carbaboranes and silicon- and carbaborane-containing compounds as well as the physicochemical properties of the polymers obtained are surveyed. Special attention has been devoted to the synthesis of polymers with dicarbaundecaborate fragments and metallocarbaborane complexes based on them. The bibliography includes 118 references.

10.1070/rc1988v057n09abeh003397

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Citations (5)

New mono- and difunctional monomers for polymerization

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science (1970)

T. M. Frunze A. A. Sakharova R. A. Lyubimskaya T. M. Ponkratova

10.1007/bf00913956

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ChemInform Abstract: SYNTHESIS OF UNSATURATED ESTERS OF M‐ AND P‐CARBORANEDICARBOXYLIC ACIDS

Chemischer Informationsdienst (1983)

V.V. Korshak N. J. BEKASOVA A. J. SOLOMATINA T. M. Frunze A. A. Sakharova

10.1002/chin.198310279

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New Polyheteroarylene Based Copolymers Formulation

High Performance Polymers (2001)

Yakov S. Vygodskii A. M. Matieva A. A. Sakharova Д. А. Сапожников Тatyana V. Volkova

Free radical initiated polymerization of methyl methacrylate containing 1–15 wt% of dissolved polyimide is studied by a calorimetric method. It is shown that polyimide (up to 10 wt%) addition leads to a shifting of the initial autoacceleration and initial autoretardation conversions to lower conversion values than those for polymerization of plain methyl methacrylate. It is stated that polyimide macromolecules do not create additional initiation reaction centres, but may take part in chain transfer and/or termination reactions during methyl methacrylate polymerization. Besides polyimides some other aromatic polymers, namely polyesters, polyamides, poly(ether ether ketone)s and poly(phthalide)s, have been used in similar processes. The new copolymers obtained differ in properties (solubility, thermal resistance, etc) compared to corresponding polymer components.

Phthalide

10.1088/0954-0083/13/2/327

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Citations (10)

Copolymers Obtained by ε-Caprolactam and Methyl Methacrylate Polymerization in the Presence of Polyimides

High Performance Polymers (2009)

Yakov S. Vygodskii Тatyana V. Volkova T. L. Batalova O. N. Zabegaeva E. M. Belavtseva

New copolymers have been synthesized by anionic or radical photopolymerization of ε-caprolactam or methyl methacrylate (MMA) in the presence of dissolved polyimides bearing hexafluoroisopropylidene, fluorene or other groups. Using diimides as models it was shown that the kinetics of anionic polymerization of ε-caprolactam depends on the nature of spacer between the imide cycles. The mechanical and tribological properties of copolymers, their water absorbance and the microstructure of copolymer films were studied. It was found that upon the selection of polyimide activator it was possible to gain the desirable control over the polymer properties, namely, the gel fraction content, phase composition, compression modulus, notched Izod impact strength, friction coefficient and temperature of frictional contact. The kinetics of radical polymerization of MMA in the presence of polyimide and model diimide has been studied by differential scanning photocalorimetry and infrared spectroscopy. From the results of the reaction kinetics and the study of polymer structures by Fourier transform infrared spectroscopy, nuclear magnetic resonance, size-exclusion chromatography and thermogravimetric analysis it has been established that radical photopolymerization of MMA in the presence of polyimide leads to the formation of copolymers owing to chain transfer reactions and/or chain termination by the relevant condensation polymer. It has been established that the imide cycles play a significant role in the formation of both copolymers with ε-caprolactam and MMA, respectively.

Caprolactam

Thermogravimetric analysis

10.1177/0954008309339410

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Citations (13)

Synthesis of polymeric phosphinocarborane complexes of Rh(I) and their catalytic properties in olefin and diene hydrogenation

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science (1985)

V. N. Kalinin О. А. Мельник A. A. Sakharova T. M. Frunze L. I. Zakharkin

Diene

10.1007/bf00956779

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Citations (2)