High modulus polyimide particle-reinforcement of epoxy composites

Essmeister, Johannes; Taublaender, M. Josef; Koch, Thomas; Cerrón-Infantes, D. Alonso; Unterlass, Miriam M.; Konegger, Thomas

doi:10.1039/d0ma00980f

Cited by 11 publications

(6 citation statements)

References 44 publications

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“…1 Additives, especially nanofillers, as well as the fabrication methods of composites, play a crucial role in polymer nanocomposite technologies, enabling the creation of materials with improved properties. [2][3][4][5][6][7][8][9][10] The nanotechnological approach not only includes adding nanofillers to the polymer matrix but also, more importantly, involves examining how the polymer matrix interacts with the extremely developed surfaces of nanofillers. Nanofillers of different types, both natural and functionalized, can be used to make polymer composites.…”

Section: Introductionmentioning

confidence: 99%

“…In the 1990s, nanotechnology was originally presented as a brand‐new technique for enhancing the characteristics of polymer composites 1 . Additives, especially nanofillers, as well as the fabrication methods of composites, play a crucial role in polymer nanocomposite technologies, enabling the creation of materials with improved properties 2–10 . The nanotechnological approach not only includes adding nanofillers to the polymer matrix but also, more importantly, involves examining how the polymer matrix interacts with the extremely developed surfaces of nanofillers.…”

Section: Introductionmentioning

confidence: 99%

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Impact of the functionalized clay nanofillers on the properties of the recycled polyethylene terephthalate nanocomposites

Kostenko,

Stetsyshyn,

Harhay

et al. 2024

J of Applied Polymer Sci

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Polymer nanocomposites, such as polyethylene terephthalate (PET)‐clay systems, leverage intricate interactions between components to fine‐tune their thermal, mechanical, and rheological properties. In our study, we functionalized montmorillonite clay nanofillers (CloisiteNa+) to fabricate recycled PET‐clay nanocomposites. The nanofillers underwent a three‐step functionalization process, involving the treatment with (3‐Aminopropyl)triethoxysilane (APTES), the grafting of initiating coatings (multifunctional peroxide initiator, [MPI]) onto clay/APTES, and the subsequent fabrication of grafted brushes using poly(butyl methacrylate) (PBMA) or poly(butyl acrylate) (PBA). The functionalization process and the properties of the modified clay were successfully confirmed through Fourier‐transform infrared spectroscopy and thermogravimetric analysis. The fabrication of nanocomposites, incorporating both clay and functionalized clay, influenced the thermal behavior of the composites, whereas the nanofillers had no discernible impact on the flow temperature. The PET and nanocomposites exhibited liquid viscoelastic behavior, with the exception of PET with clay, which displayed shear‐thinning and “rubber‐like” behavior. Rheological curves and x‐ray diffraction (XRD) analysis indicated improved dispersion and compatibility for clay/APTES and clay functionalized with PBA‐grafted brushes within the PET matrix. In some instances, the utilization of functionalized clay resulted in enhanced compatibility and customized properties in PET‐organoclay nanocomposites compared with conventional fillers. These findings bear implications for a broad spectrum of applications involving PET‐organoclay nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of the functionalized clay nanofillers on the properties of the recycled polyethylene terephthalate nanocomposites

Kostenko,

Stetsyshyn,

Harhay

et al. 2024

J of Applied Polymer Sci

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“…One literature study was found to report that hydrothermally synthesized PI powders were applied as an additive to increase the mechanical properties of other polymer resins. 44 There have been two studies that showed the possibility of sintering of hydrothermally synthesized PI powders (without the evaluation of mechanical properties). 45,46 In the present study, we first report the hydrothermal synthesis of semicrystalline PI powders along with the mechanical property evaluation of their compression-molded specimens.…”

Section: ■ Introductionmentioning

confidence: 99%

Preparation of Polyimide Powders via Hydrothermal Polymerization and Post-Heat Treatment for Application to Compression-Molding Materials

Jin

Choi

et al. 2022

ACS Sustainable Chem. Eng.

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Aromatic polyimides (PIs) are classified as highperformance polymers owing to their excellent thermal, mechanical, and chemical resistance, and they are used widely in aerospace, membranes, microelectronics, and optoelectronics industries. To synthesize aromatic PI powder in an environmentally friendly manner, a hydrothermal polymerization (HTP) method of heating dianhydride and diamine in distilled water in an autoclave has recently been suggested. However, the application of the hydrothermally synthesized PI powder has been very rare. In the present study, we first report the synthesis of hydrothermal PI powders and their application as compression-molding materials. A mixture of unreacted monomer salt (MS), oligoimide, and PI (MS/PI) powders was obtained in distilled water in an autoclave and thermally imidized to obtain a post-heat-treated polyimide (T-PI) powder with improved sintering behavior. The inherent viscosity, degree of crystallinity, and specific surface area of the T-PI powder were investigated for their suitability for compression molding. The mechanical properties of compression-molded specimens were observed to be affected by the properties of the T-PI powder. When the autoclave temperature was 140 or 160 °C, the T-PI powder showed effective sintering behavior. A tensile strength of 57.2−57.9 MPa, an elongation at break of 6.8−7.4%, and a density of 1.35−1.37 g/mL were achieved with the T-PI powder. Compression-molded specimens prepared with the T-PI powders showed excellent thermal properties and sufficient mechanical properties for use as thermally stable parts and shapes.

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“…3,4,7,10,[15][16][17][18][19][20][21] The cured resin properties have been shown to get modified by the addition of fillers, diluents, plasticizers or accelerators according to the properties desired for the end-product. 17,[22][23][24][25][26][27] Amongst the additives, the addition of plasticizers to epoxy based resins reduces brittleness and prevents the brittle fracture by increasing the flexibility of molecular chains through hindered cross-linking. 4,22,28 Various types of organic plasticizers have been used in the past for epoxy systems.…”

Section: Introductionmentioning

confidence: 99%

“…3,4,7,10,15–21 The cured resin properties have been shown to get modified by the addition of fillers, diluents, plasticizers or accelerators according to the properties desired for the end-product. 17,22–27…”

Section: Introductionmentioning

confidence: 99%

Influence of dodecyl surfactants on the cross-linking, plasticization and damping behavior of epoxy novolac resins

et al. 2022

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High modulus polyimide particle-reinforcement of epoxy composites

Abstract: A novel class of fully organic composite materials with well-balanced mechanical properties and improved thermal stability was developed by incorporating highly crystalline, hydrothermally synthesized polyimide microparticles into an epoxy matrix.

Cited by 11 publications

References 44 publications

Impact of the functionalized clay nanofillers on the properties of the recycled polyethylene terephthalate nanocomposites

Impact of the functionalized clay nanofillers on the properties of the recycled polyethylene terephthalate nanocomposites

Preparation of Polyimide Powders via Hydrothermal Polymerization and Post-Heat Treatment for Application to Compression-Molding Materials

Influence of dodecyl surfactants on the cross-linking, plasticization and damping behavior of epoxy novolac resins

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