Polyamides containing s-triazine rings and fluorene “cardo”groups: synthesis and characterization

Sagar, A. D.; Shingte, Rahul D.; Wadgaonkar, Prakash P.; Salunkhe, Manikrao M.

doi:10.1016/s0014-3057(00)00194-4

Cited by 49 publications

(20 citation statements)

References 14 publications

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“…[1][2][3][4] These polymers containing fluorenyl structure in the backbone were termed fluorenyl cardo polymer. The introduction of fluorenyl ''Cardo'' groups into polymers, such as polyimides, [5][6][7][8][9][10] polyamides, 11,12 and polyquinolines, 13 can endow with the specific properties: (1) excellent heat resistance; (2) excellent solubility. In the previous study, fluorenyl cardo bismaleimide [9,9-bis(4-maleimidophenyl)fluorine] has been synthesized and showed many excellent properties, such as good heat-resistance, high char yield, high limited oxygen index, and good flameproofing.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of novel chain‐extended bismaleimides containing fluorenyl cardo structure

Zhang

2007

J of Applied Polymer Sci

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Novel fluorenyl cardo chain-extended bismaleimides (FCCEBMIs) were synthesized by reacting maleic anhydride with fluorenyl cardo diamine and different dianhydrides. FCCEBMIs were characterized by FT-IR spectra (FT-IR), 1 H NMR, and elemental analysis. All FCCEBMI monomers were readily soluble in a variety of organic solvents, such as N-methyl-2-pyrrolidinone, N,Ndimethyl acetamide, chloroform (CHCl 3 ), methylene chloride (CH 2 Cl 2 ), dimethyl sulfoxide, and tetrahydrofuran when compared with 9,9-bis(4-maleimidophenyl) fluorene. Curing process was investigated by differential scanning calorimetry. Thermal properties of the cured FCCEBMIs were characterized by thermogravimetry analysis, the cured products are stable up to 4308C. The results show that the FCCEBMIs with imide structure improve significantly the solubility of bismaleimide (BMI) in organic solvents without sacrificing thermal properties of cured BMIs.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of novel chain‐extended bismaleimides containing fluorenyl cardo structure

Zhang

2007

J of Applied Polymer Sci

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“…[21,22] The fluorene-based polybenzoxazines exhibit remarkably higher glass transition and their thermal decomposition temperature is much higher than those of aliphatic amine-based polybenzoxazines. [23] In addition, many kinds of thermally stable polymers containing fluorene cardo have been synthesized and studied, such as poly(arylene ether), [24] polyamides, [25] polyquinolines, [26] and so on. Bismaleimide containing fluorene cardo moiety has also been reported.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and curing kinetics of novel bismaleimide monomers containing fluorene cardo group and aryl ether linkage

Zhang

Chen

Gao

et al. 2014

Designed Monomers and Polymers

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Two novel bismaleimide (BMI) monomers containing fluorene cardo group and aryl ether linkage, that is, 9,9-bis [4-(4-maleimidophenoxy)phenyl] fluorene (PF-BMI) and 9,9-bis[4-(4-maleimidophenoxy)-3-methylphenyl] fluorene (MPF-BMI) based on 9,9-bis(4-hydroxyphenyl)fluorene and its derivative were designed and synthesized. The chemical structures of the monomers were confirmed from 1 H NMR, 13 C NMR spectroscopy, and Fourier transform infrared spectroscopy. Both monomers obtained are readily soluble in common organic solvents, such as acetone, dichloromethane, and chloroform, enabling an easy solution processing. The thermal curing behavior of the monomers and their non-isothermal thermal curing processes were investigated using differential scanning calorimetry, displaying that both monomers have lower melt points and broad thermal processing windows. The corresponding kinetic data, for example, activation energy (E a ), pre-exponential factor (A), and the order of the reaction (n), were obtained by the Kissinger and Ozawa method. The BMI resins based on these new monomers have good thermal stability seen from the thermogravimetric analysis results.

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“…Many novel diamine or diacid monomers have been specially designed using different approaches, such as incorporation of flexible or bridging functional groups [3][4][5][6], bulky pendant groups [7][8][9][10][11], cardo groups [12][13][14], heterocyclic rings [15,16] and meta-or ortho-catenated as a less symmetric aromatic units [17][18][19] to afford the success in preparation of organosoluble polyamides. Recently, considerable attention has been devoted to the synthesis of fluorine containing polymers.…”

Section: Introductionmentioning

confidence: 99%

Novel para-linked and CF3-substituted poly(amide-ether-imidazole)s: Solubility, optical and thermal properties

Ghaemy

Berenjestanaki

2012

Journal of Fluorine Chemistry

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Polyamides containing s-triazine rings and fluorene “cardo”groups: synthesis and characterization

Cited by 49 publications

References 14 publications

Synthesis and characterization of novel chain‐extended bismaleimides containing fluorenyl cardo structure

Synthesis and characterization of novel chain‐extended bismaleimides containing fluorenyl cardo structure

Synthesis, characterization, and curing kinetics of novel bismaleimide monomers containing fluorene cardo group and aryl ether linkage

Novel para-linked and CF3-substituted poly(amide-ether-imidazole)s: Solubility, optical and thermal properties

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