New Polyheteroarylene Based Copolymers Formulation

Vygodskii, Yakov S.; Matieva, A. M.; Sakharova, A. A.; Sapozhnikov, Dmitry; Volkova, Тatyana V.

doi:10.1088/0954-0083/13/2/327

Cited by 11 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MMA and monomers for the synthesis of polyimides and model diimides were purified by common methods [7]. Photoinitiator (Pht) IRGACURE-1700 was supplied by CIBA-GEIGY and used as received.…”

Section: Methodsmentioning

confidence: 99%

“…Another confirmation of copolymer formation has been established by SEC for PMMA with 10 wt.% of PI VII-I having an unimodal molecular weight distribution (MWD) in comparison with bimodal MWD for the corresponding mechanical blend (figure 5). 186.7 345.5 1.9 PI VII-II 7 31.5 54.0 1.7 7 For comparison.…”

Section: Radical Photopolymerization Of Mma In the Presence Of Polyimides And Diimidementioning

confidence: 99%

“…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%

See 2 more Smart Citations

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

Vygodskii

Volkova

Batalova

et al. 2009

High Performance Polymers

View full text Add to dashboard Cite

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.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Radical Photopolymerization Of Mma In the Presence Of Polyimides And Diimidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Vygodskii

Volkova

Batalova

et al. 2009

High Performance Polymers

View full text Add to dashboard Cite

show abstract

“…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%

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

View full text Add to dashboard Cite

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.

show abstract

“…Therefore the incorporation of cardo and perfluoroalkylene groups into polyimide macromolecules leads to the formation of polymers having increased T g and which are soluble not only in the solvents cited above but also in some aliphatic esters, for example in ethyl acetate which is widely used in polymer processing. It was discovered that such polymers are also soluble in methyl methacrylate and some other (meth)acrylates [3]. This became the basis for the study of formulation of novel polymer systems by addition polymerization of different acrylates containing polyimides.…”

Section: Introductionmentioning

confidence: 99%

The Formulation of Polymers by Polymerization–Polycondensation Processes: Polyimide Based Systems

Vygodskii¹,

Sakharova²,

Matieva

1999

High Performance Polymers

Self Cite

View full text Add to dashboard Cite

Radical chain (co)polymerization of a set of acrylates containing dissolved high performance polymers, namely fluoropolyimide, is performed. Based on the study of the structure and properties of the polymers (elemental composition, solubility, molecular weight parameters, etc) it is proposed that the copolymer formation reaction takes place due to a transfer chain reaction on the polyimide. The influence of acrylate (ethyl-, n-butyl-, methyl-α-fluoro-, ethylα-fluoro-, methyl-glycidyl-, butyl-, hexafluoro-iso-propylmethacrylate) and polyimide content on the properties of the copolymers obtained is studied. Clear and opaque, hard and elastic materials are obtained. These polymers differ in their characteristics from the relevant polyacrylates and their blends with polyimide prepared by the usual method of mixing. One-step catalytic polycondensation of diamines and tetracarboxylic acid dianhydrides in a solution of preformed polyimide is studied. It is shown that such a procedure influences the structure and properties of polyimides formed in situ.

show abstract

New Polyheteroarylene Based Copolymers Formulation

Cited by 11 publications

References 7 publications

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

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

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

The Formulation of Polymers by Polymerization–Polycondensation Processes: Polyimide Based Systems

Contact Info

Product

Resources

About