High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties
Hybrid nanocomposites based on heterocyclic network, obtained from bisphenol A based phthalonitrile (BAPhN) with different (0.03–5.0 wt%) contents of reactive amino-montmorillonite (MMT) nanolayers, were synthesized and studied for the first time. Their structure, dynamics, thermal, relaxation and e...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2019-07-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0009834&mi=cd |
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| author | V. A. Bershtein A. M. Fainleib P. N. Yakushev D. A. Kirilenko K. G. Gusakova D. A. Markina O. G. Melnychuk V. A. Ryzhov |
| author_facet | V. A. Bershtein A. M. Fainleib P. N. Yakushev D. A. Kirilenko K. G. Gusakova D. A. Markina O. G. Melnychuk V. A. Ryzhov |
| author_sort | V. A. Bershtein |
| collection | DOAJ |
| description | Hybrid nanocomposites based on heterocyclic network, obtained from bisphenol A based phthalonitrile (BAPhN) with different (0.03–5.0 wt%) contents of reactive amino-montmorillonite (MMT) nanolayers, were synthesized and studied for the first time. Their structure, dynamics, thermal, relaxation and elastic properties were characterized using transmission electron microscopy (TEM), mid-infrared (mid-IR), far-infrared (far-IR) and energy dispersive X-ray (EDX) spectroscopies, differential scanning calorimetry (DSC), and by dynamic mechanical analysis (DMA) and thermogravimetry (TGA) measurements performed in both air and nitrogen mediums at temperatures from 20 to 600–900 °C. Depending on nanofiller content, different extents of MMT stacks exfoliation, from single nanolayers to MMT stacks with tens nanolayers-thickness, are observed in the nanocomposites. The pronounced dynamic heterogeneity in the glass transition and the ‘constrained dynamics’ effects are shown. For the pristine matrix, Tg (DMA) = 446 °С varying from 460 to 570 °С for the nanocomposites. After high-temperature treatment in N2 medium, the relaxation spectrum and glass transition disappear, and constant dynamic modulus E′ ≈ 3 GPa at 20–600 °С is registered. A satisfactory thermal stability of the nanocomposites, with retaining the sample integrity is observed at temperatures up to ~500 °C in air and up to 900 °C in N2 medium. |
| format | Article |
| id | doaj-art-c4ce499442c24a69a13a6b3c0bf9e4e1 |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-c4ce499442c24a69a13a6b3c0bf9e4e12025-08-20T02:51:41ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2019-07-0113765667210.3144/expresspolymlett.2019.55High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, propertiesV. A. BershteinA. M. FainleibP. N. YakushevD. A. KirilenkoK. G. GusakovaD. A. MarkinaO. G. MelnychukV. A. RyzhovHybrid nanocomposites based on heterocyclic network, obtained from bisphenol A based phthalonitrile (BAPhN) with different (0.03–5.0 wt%) contents of reactive amino-montmorillonite (MMT) nanolayers, were synthesized and studied for the first time. Their structure, dynamics, thermal, relaxation and elastic properties were characterized using transmission electron microscopy (TEM), mid-infrared (mid-IR), far-infrared (far-IR) and energy dispersive X-ray (EDX) spectroscopies, differential scanning calorimetry (DSC), and by dynamic mechanical analysis (DMA) and thermogravimetry (TGA) measurements performed in both air and nitrogen mediums at temperatures from 20 to 600–900 °C. Depending on nanofiller content, different extents of MMT stacks exfoliation, from single nanolayers to MMT stacks with tens nanolayers-thickness, are observed in the nanocomposites. The pronounced dynamic heterogeneity in the glass transition and the ‘constrained dynamics’ effects are shown. For the pristine matrix, Tg (DMA) = 446 °С varying from 460 to 570 °С for the nanocomposites. After high-temperature treatment in N2 medium, the relaxation spectrum and glass transition disappear, and constant dynamic modulus E′ ≈ 3 GPa at 20–600 °С is registered. A satisfactory thermal stability of the nanocomposites, with retaining the sample integrity is observed at temperatures up to ~500 °C in air and up to 900 °C in N2 medium.http://www.expresspolymlett.com/letolt.php?file=EPL-0009834&mi=cdNanocompositesPhthalonitrile//amino-MMT SynthesisStructureProperties |
| spellingShingle | V. A. Bershtein A. M. Fainleib P. N. Yakushev D. A. Kirilenko K. G. Gusakova D. A. Markina O. G. Melnychuk V. A. Ryzhov High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties eXPRESS Polymer Letters Nanocomposites Phthalonitrile//amino-MMT Synthesis Structure Properties |
| title | High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties |
| title_full | High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties |
| title_fullStr | High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties |
| title_full_unstemmed | High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties |
| title_short | High-temperature hybrid phthalonitrile/amino-MMT nanocomposites: Synthesis, structure, properties |
| title_sort | high temperature hybrid phthalonitrile amino mmt nanocomposites synthesis structure properties |
| topic | Nanocomposites Phthalonitrile//amino-MMT Synthesis Structure Properties |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0009834&mi=cd |
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