Three-dimensional free-radical copolymerization of methyl methacrylate with diunsaturated monomers in the presence of an aromatic polyimide

Vygodskii, Ya. S.; Volkova, Тatyana V.; Sakharova, A. A.; Sapozhnikov, Dmitry; Никифорова, Г. Г.; Matieva, A. M.

doi:10.1134/s0965545x06070030

Cited by 13 publications

(17 citation statements)

References 6 publications

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“…In order to achieve the maximum polymerization rate and obtain a mixture of the required viscosity with maximum filling, FCPI with relatively low molecular weight properties (ηinh = 0.36 dLg−1, Mn = 36 kDa, Mw = 56 kDa) was synthesized. Previously, using the example of methyl methacrylate polymerization in the presence of FCPI characterized by different molecular weights, it was shown that the maximum values of the polymerization rates of this monomer are obtained at a lower molecular weight of the PI [44]. Furthermore, the introduction of a low molecular weight PI also leads to an increase in the performance characteristics of the resulting copolymers as well [47].…”

Section: Resultsmentioning

confidence: 99%

“…Previously, we performed investigations of free radical thermal homo-and copolymerization of (meth)acrylates, styrene and N-vinyl-2-pyrrolidone containing dissolved polyheteroarylenes including PIs [37][38][39][40][41][42][43][44]. It was found that the obtained polymer systems differ from the corresponding homopolymers in terms of molecular weight characteristics, thermal and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The study of the kinetics of free radical thermal and photopolymerization (meth)acrylates in the presence of polyimide, polyarylate and their model compounds by differential scanning photocalorimetry, FTIR, ESR spectroscopy, etc. [38,[41][42][43][44][45][46][47] allowed us to identify the mechanism of copolymer formation due to the chain transfer reaction to functional groups of polyheteroarylenes, in particular to imide cycles [42,43,46,47]. The introduction of polyheteroarylenes into the monomer(s) and subsequent polymerization in situ contributed to an increase in the thermal and mechanical properties of the copolymers formed compared to unmodified carbon-chain homopolymers [37][38][39][40][41][42][43][44][45][46][47], opening up wide possibilities for obtaining various functional materials.…”

Section: Introductionmentioning

confidence: 99%

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Soluble Fluorinated Cardo Copolyimide as an Effective Additive to Photopolymerizable Compositions Based on Di(meth)acrylates: Application for Highly Thermostable Primary Protective Coating of Silica Optical Fiber

Sapozhnikov,

Melnik,

Chuchalov

et al. 2024

Preprint

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The development of photocurable compositions is in high demand for the manufacture of func-tional materials for electronics, optics, medicine, energy, etc. The properties of the final pho-to-cured material are primarily determined by the initial mixture, which needs to be tuned for each application. In this study we propose to use simple systems based on di(meth)acrylate, polyimide and photoinitiator for the preparation of new photo-curable compositions. It was es-tablished that a fluorinated cardo copolymide (FCPI) based on 2,2-bis-(3,4-dicarboxydiphenyl)hexafluoropropane dianhydride, 9,9-bis-(4-aminophenyl)fluorene and 2,2-bis-(4-aminophenyl)hexafluoropropane (1.00:0.75:0.25 mol) has excellent solubility in di(met)acrylates. This made it possible to prepare solutions of FCPI in such monomers, to study the effect of FCPI on the kinetics of their photopolymerization in situ and the properties of the resulting polymers. According to the obtained data, the solutions of FCPI (23 wt.%) in 1,4-butanediol diacrylate (BDDA) and FCPI (15 wt.%) in tetraethylene glycol diacrylate were tested for the formation of the primary protective coatings of the silica optical fibers. It was found that the new coating of poly(BDDA–FCPI23%) can withstand prolonged annealing at 200°C (72 h), which is comparable or superior to the known most thermally stable photo-curable coatings. The proposed approach can be applied to obtain other functional materials.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soluble Fluorinated Cardo Copolyimide as an Effective Additive to Photopolymerizable Compositions Based on Di(meth)acrylates: Application for Highly Thermostable Primary Protective Coating of Silica Optical Fiber

Sapozhnikov,

Melnik,

Chuchalov

et al. 2024

Preprint

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“…On the other hand the research into the radical thermal polymerization of acrylates [5][6][7][8] and styrene [9] containing dissolved polyheteroarylenes, particularly polyimides, including the three-dimensional copolymerization of MMA with various difunctional monomers [10,11], has shown the possibility to synthesize copolymers containing fragments of polyheteroarylenes and of carbon-chain polymers based on the vinyl monomers. In a previous work, using styrene as the vinyl monomer, it has been established that the styrene homopolymer was not formed even in the presence of a small (4 wt.%) content of PI in the monomer [9].…”

Section: Introductionmentioning

confidence: 99%

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

Vygodskii

Volkova

Batalova

et al. 2009

High Performance Polymers

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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.

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“…In our laboratory, we have started similar work to produce hybrid materials of acrylic latexes containing polyimides. Using a fluorinated polyimide, kindly provided by Vygodskii et al ,14 who prepared similar materials from solution polymerization, it was possible to prepare stable acrylic monomer miniemulsions which were further polymerized. In this paper, we would like to report results concerning acrylic latex hybrids containing simpler polyimides prepared using conventional materials.…”

Section: Introductionmentioning

confidence: 99%

Hybrid acrylic–polyimide latexes from miniemulsion polymerisation

Grailla¹,

Bartholir²,

Gauthier³

et al. 2004

Polymer International

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A rigid polyimide (PI) was dissolved in acrylic monomers (methyl methacrylate, n‐butyl acrylate) as a hydrophobe to form miniemulsions stabilized by a mixture of sodium dodecyl sulfate and Triton®, with droplets size in the range 100–300 nm, and PI concentration up to about 30% by weight, which corresponds to its limit of solubility. Upon polymerization initiated with ammonium persulfate, the particle size tends to decrease to the range 80–250 nm. From these hybrid latexes, clear yellowish films were obtained with two glass transitions: one close to that of polybutylacrylate (Tg = −50 °C) and the second between 15 and 40 °C, depending on PI concentration. PI causes a reinforcement of the mechanical properties at room temperature. This reinforcement is enhanced through an appropriate thermal treatment. Copyright © 2004 Society of Chemical Industry

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Three-dimensional free-radical copolymerization of methyl methacrylate with diunsaturated monomers in the presence of an aromatic polyimide

Cited by 13 publications

References 6 publications

Soluble Fluorinated Cardo Copolyimide as an Effective Additive to Photopolymerizable Compositions Based on Di(meth)acrylates: Application for Highly Thermostable Primary Protective Coating of Silica Optical Fiber

Soluble Fluorinated Cardo Copolyimide as an Effective Additive to Photopolymerizable Compositions Based on Di(meth)acrylates: Application for Highly Thermostable Primary Protective Coating of Silica Optical Fiber

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

Hybrid acrylic–polyimide latexes from miniemulsion polymerisation

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