Thermal Characterization of Polyaminobismaleimide Prepolymers

Abstract

Polyaminobismaleimide prepolymers were obtained by a Michael addition reaction of a 4,4 -diaminodiphenylmethane (DDM) to 4,4 -bismaleimidodiphenylmethane (BMI) by melt polymerization, in various molar ratios of DDM:BMI. The thermal parameters of the polyaddition reaction and the thermal polymerization were evaluated by differential scanning calorimetry (DSC). The DDM:BMI molar ratio and the reaction time influence the residual amine groups and number-average molecular weight (M n ).

Thermal behavior and cured products of bis(4‐maleimidodiphenyl)methane, bis(isomaleimidodiphenyl)methane and 4,4′‐diaminodiphenyl methane mixtures

“…We have already reported the thermal behavior of the bismaleimide-diamine mixture. 13 Correlating DSC data for a dynamic regime with isothermal data, we reached the conclusion that the optimum polyaddition temperature ranged between 150°C and 160°C. 13 Figure 3 DSC thermograms of AC 10 D 4 mixture in molar ratio D:C ϭ 1:1 in N 2 .…”

“…The first reaction involves copolymerization of the aromatic diamine with isomaleimide functions via a ring‐opening polyaddition reaction [Scheme (a)]; the second reaction involves the Michael addition reaction of diamine to the double bonds of maleimide [Scheme (b)]; and the third reaction involves homopolymerization of double bonds of maleimide or maleamide functions [Scheme (c,d)] by a thermally induced radical opening of the maleimide double bonds (Scheme ). We have already reported the thermal behavior of the bismaleimide–diamine mixture 13…”

“…11,12 We already have reported the thermal behavior of polyaminobismaleimide prepolymers by differential scanning calorimetry. 13 This article describes the influence of bis(4-isomaleimidodiphenyl)methane on the curing behavior of the bis(4-maleimidodiphenyl)methane and its influence on the properties of poly[(amino-amido)maleimide] networks.…”

“…The use of binary and ternary bismaleimide mixtures may be developed as a method for improving processibility in the molten state 11, 12. We already have reported the thermal behavior of polyaminobismaleimide prepolymers by differential scanning calorimetry 13…”

New Functional Maleimides and Citraconimides for Amide, Urea or Parabanic Aromatic Bismaleimides

“…We have reported the synthesis of bismaleimide monomers with ester [12][13][14][15], ether [16,17], urethane linkage [15,18,19] or a parabanic heterocycle [20] in backbone and their polymers. The bismaleimide polymer presents a particular interest because of their high durability and temperature capabilities and relatively * To whom correspondence should be addressed.…”