Synthesis, Characterization and Stability of Bismaleimides Containing Ester Groups in the Backbone

Sava, M.; Găină, Constantin; Gaina, Viorica; Chiriac, C. I.; Stoleriu, A.

doi:10.1080/10601329708011060

Cited by 15 publications

(12 citation statements)

References 9 publications

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“…E-mail: gcost@icmpp.tuiasi.ro salts of p-aminobenzoic acid 7 and bismaleimides containing ester groups. 8,9 In the present work, a series of bismaleimides containing ester groups from bisphenolic chelates with copper(II), nickel(II), cobalt(II) and zinc(II) were prepared and characterized, and their thermal properties were also investigated. 1 H NMR spectra were performed on a JEOL C-60 HL spectrometer using tetramethylsilane (TMS) as internal standard.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of bismaleimides containing ester groups from bisphenolic chelates and their polymers

Găină¹,

Gaina²,

Ardeleanu³

2004

Applied Organom Chemis

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A series of novel metal-containing bismaleimide monomers was prepared by the reaction of 4-maleimidobenzoic acid chloride with bisphenolic chelates. By reaction of the synthesized bismaleimides with bis(1-mercapto-2-ethylether) or 3,4-dichloromaleimidobenzoic acid chloride, new chelating polyimidosulfides and poly(ether-ester)maleimides were prepared. The structures of the bisphenols, bismaleimides and polymers obtained were confirmed by IR spectroscopy and elemental analysis. Characterization of the compounds was undertaken by differential scanning calorimetry, thermooptical analysis, thermogravimetric analysis, viscosity measurements and solubility tests.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of bismaleimides containing ester groups from bisphenolic chelates and their polymers

Găină¹,

Gaina²,

Ardeleanu³

2004

Applied Organom Chemis

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“…[1][2][3][4][5][6] A wide variety of polyimides with end-capped reactive maleimide have been developed in the last 30 years with the aim of improving the processability without altering their thermal behavior and mechanical strength. However, the applications are restricted by solvent retention in the prepregs, brittleness of polymers due to high crosslink density, and the high temperatures used for curing.…”

Section: Introductionmentioning

confidence: 99%

Syntheses of bismaleimides with ester units and their polymerization with diamines

Sava¹

2002

J of Applied Polymer Sci

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ABSTRACT:Five structurally different bismaleimides were synthesized by reaction between 3(4)-maleimidobenzylchloride with various diphenols. They were characterized by infrared (IR) and proton nuclear magnetic resonance ( 1 H-NMR) spectroscopy. Thermal characterization of monomers and their polymers was accomplished by differential scanning calorimetry (DSC) and dynamic thermogravimetric analysis (TGA). Polyaminobismaleimides having inherent viscosities of 0.1-0.4 dL/g were prepared by Michael addition of diamines to bismaleimides. The polymers are soluble in solvents as DMF, NMP, and DMSO, and afforded film from their solutions.

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“…Thus, many researchers have focused on the study to improve the toughness of BMI resins. [1][2][3][4] Numerous approaches have been developed to improve the toughness of BMI resins, such as the synthesis of novel BMI monomers with tailored molecular structure, [5][6][7][8][9] copolymerization with allyl-terminated copolymers or aromatic diamines, [10][11][12][13][14] blending modification with thermoplastic resins or liquid crystalline compounds, and so on, [15][16][17][18][19] These methods can improve the toughness of BMI resins with a sacrificing of the thermal stability of resultant materials. 20 O,O -diallyl bisphenol A (DABPA) modified BMI resin systems, whose prepolymers have lower softening point and higher solubility, have been developed successfully.…”

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Novel Bismaleimide Resins Modified by Allyl Compound Containing Liquid Crystalline Structure

Wang

Chen

et al. 2016

Adv Polym Technol

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ABSTRACT:A novel allyl compound containing liquid crystalline structure, i.e., 4,4'-bis(4-allyloxy benzoic acid) phenyl ester (BAOBE), was synthesized. The chemical structure of BAOBE was characterized by Fourier transform infrared (FTIR) spectroscopy and 1 H NMR spectra, and the liquid crystalline properties were confirmed by polarized optical microscopy (POM). Besides, a series of modified bismaleimide (BMI) resins were prepared based on N,N -4,4 -bismaleimidodiphenylmethylene (BDM), BAOBE, and O,O'-diallyl bisphenol A (DABPA). The results of thermogravimetric analysis (TGA) indicate that the modified resins have excellent thermal stability with the highest temperatures for 5% weight loss above 438°C. The results of dynamic mechanical analysis (DMA) suggest that the glass transition temperature (T g ) of the modified resins are above 280°C. Besides, the introduction of BAOBE leads to a significant improvement in the flexural and impact properties of the modified BMI resins. Compared with the resin with only DABPA as a modifier, the highest flexural and impact strength can reach 156.2 MPa and 15.6 kJ/m 2 , increased by 19.2% and 90.2%, respectively. C

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Synthesis, Characterization and Stability of Bismaleimides Containing Ester Groups in the Backbone

Cited by 15 publications

References 9 publications

Preparation and characterization of bismaleimides containing ester groups from bisphenolic chelates and their polymers

Preparation and characterization of bismaleimides containing ester groups from bisphenolic chelates and their polymers

Syntheses of bismaleimides with ester units and their polymerization with diamines

Novel Bismaleimide Resins Modified by Allyl Compound Containing Liquid Crystalline Structure

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