Fourier transform infrared spectroscopic characterization of aromatic bismaleimide resin cure states

Giulio, C. Di; Gautier, Mathieu; Jasse, B.

doi:10.1002/app.1984.070290530

Cited by 94 publications

(44 citation statements)

References 4 publications

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“…In Figure 1, showing the IR spectra of OMPS, DDM and OMPS/DDM systems, the disappearance of the peak at 3100 cm -1 , corresponding to the maleimide double bond in OMPS, confirms the existence of the Michael addition reaction with the amino group of DDM and the formation of an aspartimide [19]. A previous kinetic study of the thermal polymerization of aryl bis-maleimides and bis-citraconimides confirms that the Michael addition reaction occurs through an ionic mechanism, which proceeds much more quickly than the BMI homopolymerization [20][21][22][23][24][25].…”

Section: Spectral Analysis and Cure Behaviourmentioning

confidence: 60%

Synthesis and Characterization of a POSS-Maleimide Precursor for Hybrid Nanocomposites

Jothibasu

Premkumar

Alagar

et al. 2007

High Performance Polymers

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Epoxy-POSS based hybrid nanocomposites are prepared by in situ polymerization of a homogeneous blend of the diglycidylether of bisphenol-A (DGEBA) and 4,4'-diaminodiphenylmethane (DDM) in the presence of octa(maleimidophenyl)silsesquioxane (OMPS). The reaction of a maleimido-functionalised POSS cube with the epoxy resin is studied by Fourier transform infrared (FTIR) analysis and the formation of nanocomposites is confirmed by wide-angle X-ray diffraction (WAXD) and scanning electron microscopy (SEM). Dynamic mechanical analysis (DMA) studies indicate that the crosslinking structures of the nanocomposite networks are predominantly formed 2 between the terminal maleimide double bonds and the amino groups of DDM through a Michael addition reaction to form an aspartimide. The values of the glass transition temperatures (T g ) decrease with increasing POSS-maleimide content and this is likely to be due to the inclusion of POSS cages into the system and consequent increase in free volume. The dynamic thermal stability of the cured polymers is increased by increasing the POSS content in the hybrid epoxy matrices as evidenced from thermogravimetric analysis (TGA) data.

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Section: Spectral Analysis and Cure Behaviourmentioning

confidence: 60%

Synthesis and Characterization of a POSS-Maleimide Precursor for Hybrid Nanocomposites

Jothibasu

Premkumar

Alagar

et al. 2007

High Performance Polymers

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“…However, its absolute intensity is invariant during curing, and appropriate correction of the analytical band intensity is therefore possible. The peak at 3097 is due to the n(H{C|) vibration and has been widely used in the literature 10,11 to follow the conversion of BMI double bonds during curing. In the system under investigation, it is poorly resolved from the complex profile due to the C{H stretching modes at lower frequency.…”

Section: Resultsmentioning

confidence: 99%

An interpenetrated system based on a tetrafunctional epoxy resin and a thermosetting bismaleimide: Structure-properties correlation

Musto

Martuscelli

Ragosta

et al. 1998

J. Appl. Polym. Sci.

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ABSTRACT:The kinetics and mechanism of the curing process of a thermosetting blend formed by tetraglycidyl-4,4 -diaminodiphenyl methane and N,N-bismaleimido-4,4 -diphenyl methane (BMI) cured in the presence of 4,4-diaminodiphenyl sulfone, was investigated in detail by Fourier transform infrared spectroscopy. Information on the molecular structure of the network formed upon curing was derived. Dynamic-mechanical measurements on dry samples indicated an interpenetrated polymer network-like structure. Sorption measurements at 70ЊC showed a reduction of the water uptake at equilibrium in the presence of substantial amounts of BMI in the system (43.5% body weight). Finally, the dynamic-mechanical analysis of wet samples demonstrated a reduction of the plasticizing efficiency of the absorbed water in the presence of BMI.

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“…However, it is presumable that the major component of the A-BDM resin prepared by reacting BDM with 10 mol % allylamine or less is compound I1 because the peak contributed by the secondary amine groups did not appear and that contributed by the double bonds in the maleimide groups significantly reduced its intensity. As the molar ratio of allylamine was increased from 10 to 150 mol %, the intensity of the latter peak decreased rapidly while that of the peaks contributed by the second amine groups and ally1 groups gradually increased, implying that compounds 11,111, and IV should be yielded in sequence along with the increase of molar ratio of allylamine. As the amount of allylamine was more than 150 mol %, compounds IV and V in the yielded A-BDM should be dominated in view of the fact that no double bonds were left.…”

Section: Characterization Of A-bmimentioning

confidence: 99%

Allylamine‐adducted bismaleimide resins. I. The curing reactions

Lin¹,

Lin²

1993

J of Applied Polymer Sci

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A variety of allylamine‐adducted bismaleimide (A‐BMI) resins were prepared by reacting bismaleimide (BMI), such as 4,4′‐bismaleimidodiphenylmethane (BDM) and 4,4′‐bismaleimidodiphenylether (BDE), with various molar ratio of allylamine through the Michael addition. The prepared A‐BMI resins are a partial crystalline or completely amorphous solid, depending on the amount of adducted allylamine. Two types of curing reactions for the A‐BMI resins were detected by differential scanning calormetry and verified by the mass spectroscopies of cured resins: one is the homopolymerization of A‐BMI resins through opening of the double bonds in the maleimide groups; the other is the reactions between allyl groups and benzene rings, taking place mainly when most of the double bonds in maleimide groups of the A‐BMI resins have been opened by allylamines. © 1993 John Wiley & Sons, Inc.

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Fourier transform infrared spectroscopic characterization of aromatic bismaleimide resin cure states

Cited by 94 publications

References 4 publications

Synthesis and Characterization of a POSS-Maleimide Precursor for Hybrid Nanocomposites

Synthesis and Characterization of a POSS-Maleimide Precursor for Hybrid Nanocomposites

An interpenetrated system based on a tetrafunctional epoxy resin and a thermosetting bismaleimide: Structure-properties correlation

Allylamine‐adducted bismaleimide resins. I. The curing reactions

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