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Zaitsev, B. А.; Khramova, G. I.; Tsygankova, T. S.

doi:10.1023/a:1025759808918

Cited by 9 publications

(10 citation statements)

References 3 publications

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“…Rolivsans are formed in the series of consecutive-parallel reactions (catalyzed by strong acids) between di-secondary aliphatic-aromatic diols (di-sec. diols) and unsaturated carboxylic acids [3][4][5][6][7][8][9]. Thermosetting resins of this type may be obtained from various di-sec.…”

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

“…However, the most promising materials were synthesized via the acid-catalyzed reaction of one di-sec. diol (bis- [4-(α-hydroxyethyl)phenyl] ether, BHEPE) with methacrylic acid (MAA) [4,7,8]. Rolivsans (ROLs) are solvent-free liquid or low-melting monomer-oligomer compositions including bis-(4-vinylphenyl) ether (4,4′-divinyldiphenyl oxide), (di)methacrylates of BHEPE and highly unsaturated aromatic oligoethers containing terminal styrene-like and methacrylate groups (ROLs-OLs).…”

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

“…(a) esterification of the BHEPE diol by MAA [3,4], (b) co(poly)condensation of BHEPE and MAA leading to the formation of oligoethers with methacylate end groups (OMEG) [10], (c) acidolysis and dehydration of OMEG resulting in the formation of bis-(4-vinylphenyl) ether (М1), methacrylic ester of 4-vinyl-4′-(α-hydroxyethyl)phenyl ether (М2) and dimethacrylic ester of bis-[4-(α-hydroxyethyl)phenyl] ether (М3) [3,4], (d) stepwise splitting of the М2 and М3 methacrylates [3,4]:…”

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

“…М3 → М2 + MAA, M2 → M1 + MAA, (e) cationic proton-transfer polyaddition reactions of (di)vinylaromatic compounds (M1) [3,4,[11][12][13][14][15].…”

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

“…Size exclusion chromatography (SEC) studies of rolivsans were made using a GPC Waters chromatograph equipped with Ultrastyragel (500Ǻ) columns at 20°С; toluene was used as an eluent [4]. Number-average molecular weights of oligomers (M n ) were determined using a Hitachi-Perkin-Elmer 115 steam osmometer [15].…”

Section: Characterizationmentioning

confidence: 99%

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High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

Zaitsev

Shvabskaya

2015

J Polym Res

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Rigid chemical structure provides for excellent thermal and thermo-mechanical properties of heat resistant organic polymers, but affects their fabricability. For the first time a new original chemical approach to the problem of combining high-temperature stability, durability of thermosetting polymers with environmental safety and easy processability has been developed and demonstrated in detail. The key methodological concept was introducing a new structure-forming tool (α-hydroxyethyl)phenylene functional groups) into the chemistry of thermally stable organic polymers. The main goal of this work was to reveal structure-property correlations for rolivsans and products of their cure; using the obtained data would allow to combine resin processability with high thermo-oxidative stability, good heat deformation characteristics and mechanical strength of the prepared polymeric materials. The properties of network copolymers of ( d i ) v i n y l a r o m a t i c e t h e r s w i t h t h e r m o s e n s i t i v e (di)methacrylates and copolymer-based composites were studied. These copolymers were capable of changing their (micro)structure, crosslink density and mechanical properties in the process of thermal treatment. Rolivsan resin compositions with equimolar concentrations of styrene-like and methacrylate end groups have shown optimal combination of fabricability, mechanical strength and heat deflection temperature (HDT). It was found that HDT of rolivsan castings/glassreinforced plastics was 250°C/275°С. Rolivsan copolymers/composites could withstand short-duration temperature spikes (up to 350°C).

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Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

“…М3 → М2 + MAA, M2 → M1 + MAA, (e) cationic proton-transfer polyaddition reactions of (di)vinylaromatic compounds (M1) [3,4,[11][12][13][14][15].…”

Section: Chemistry Of Rolivsan Resinsmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

See 3 more Smart Citations

High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

Zaitsev

Shvabskaya

2015

J Polym Res

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Thermal and thermomechanical properties of rolivsan unsaturated resins co‐cured with bisphenol A dicyanate

Zaitsev

Kleptsova

Shvabskaya

2023

Polymer Engineering & Sci

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The present work discusses the experimental verification of the efficiency of a new method of chemical modification of thermosetting resins. The method is based on the use of (nano)micron-sized interlayers that appear between densely crosslinked grains of a glassy network polymer during threedimensional radical polymerization of unsaturated monomers (oligomers). These interlayers act as self-contained microreactors, into which different polyfunctional compounds can be introduced for carrying out the desired chemical reactions. Thermal and dynamic mechanical analysis, differential scanning calorimetry, and Fourier transform infrared spectroscopy were used to investigate the influence of regimes of thermocatalytic co-curing of rolivsan unsaturated resins (ROLs) with bisphenol A dicyanate (BADCy) on thermal and thermomechanical properties of the obtained crosslinked polymers. It was found that the cured ROL/BADCy blends with high (25-50 wt%) content of the BADCy component had less favorable thermal and mechanical parameters than the cured neat ROL. When the BADCy component of a ROL/BADCy blend played the role of a polyfunctional (modifying) additive (5-7.5 wt%) that migrated into "microreactors" and entered into ter-molecular and other reactions, the final cross-linked ROL-BADCy blends had better high-temperature strength, higher stability against thermo-oxidative and hydrolytic destruction than the individual components (i.e., the cured neat ROL and the cured neat BADCy). As the chemical structure may comprise two networks covalently bound to each other, they can be considered as block copolymers. The obtained results confirm the efficiency of the proposed method of chemical modification of unsaturated thermosetting resins, such as ROLs.

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Progress in improving high-temperature properties of thermosetting resins: development of the microheterogeneous model for the formation of crosslinked rolivsan-epoxy blends

2016

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Untitled

Cited by 9 publications

References 3 publications

High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

High-temperature properties of rolivsan thermosetting resins (network copolymers of (di)vinylaromatic ethers and cyclized (di)methacrylates)

Thermal and thermomechanical properties of rolivsan unsaturated resins co‐cured with bisphenol A dicyanate

Progress in improving high-temperature properties of thermosetting resins: development of the microheterogeneous model for the formation of crosslinked rolivsan-epoxy blends

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