Preparation of polymer – multi-walled carbon nanotube composites with enhanced mechanical properties using supercritical antisolvent precipitation

Vorobei, A. M.; Pokrovskiy, O. I.; Ustinovich, K. B.; Паренаго, О. О.; Savilov, S. V.; Лунин, В. В.; Новоторцев, В. М.

doi:10.1016/j.polymer.2016.04.059

Cited by 24 publications

(15 citation statements)

References 18 publications

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“…Within this context are the nanostructured composites, particularly those constituted with the addition of carbon nanotubes (CNT), which has increasingly gained importance in academic community, since the introduction of this nanomaterial has shown promising results [5][6][7]. The CNTs possess remarkable characteristics, such as high aspect ratio (~1000), low density (2.0 g cm −3 ) and excellent mechanical, thermal and electrical properties [8][9][10]. Therefore, the addition of this nanoparticles as a reinforcement in polymer composites gives the material not only mechanical but also thermal and electrical improvements [4,11,12].…”

Section: Introductionmentioning

confidence: 99%

Processing, thermal and mechanical behaviour of PEI/MWCNT/carbon fiber nanostructured laminate

Santos

Ribeiro

Hein

et al. 2017

Mater. Res. Express

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In this work, nanostructured composites of polyetherimide (PEI) with addition of functionalized multiwall carbon nanotube (MWCNT) were processed via solution mixing. After processing, these nanocomposites were evaluated by thermogravimetry (TGA), dynamic-mechanical analysis (DMA), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Subsequently, the nanocomposite was processed with carbon fibers by using hot compression molding. In order to evaluate interlaminar fracture strength, the processed laminates were mechanically evaluated by interlaminar shear strength (ILSS) and compression shear test (CST). Also, the Weibull distribution was employed to help in the statistical treatment of the data obtained from the mechanical tests. With regards to the fracture of the specimens, optical microscopy was used for the evaluation of the material. The addition of 1 wt% of MWCNT in the polymer matrix increased both thermal stability and viscoelastic behavior of the material. These improvements positively impacted the mechanical properties, generating a 16% and 58% increase in the short-beam strength and apparent interlaminar shear, respectively. In addition, it can be verified from morphological analysis of the fracture a change in the failure mode of the laminate by the incorporation of MWCNT. This behavior can be proven from CST test where there was no presence of the shear force by compression.

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Section: Introductionmentioning

confidence: 99%

Processing, thermal and mechanical behaviour of PEI/MWCNT/carbon fiber nanostructured laminate

Santos

Ribeiro

Hein

et al. 2017

Mater. Res. Express

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“…[11,12] Agglomeration of the CNT generates nonhomogeneous composites, which may result in the deterioration of the final properties of the material. [13] Therefore, a major challenge in the development of CNT/polymer composites consists of obtaining a satisfactory dispersion of the filler in the polymer matrix maximizing the properties of the final product. The functionalization process appears to prevent the CNT agglomeration, improving the interfacial adhesion between the polymer matrix and the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

The effect of temperature on fatigue strength of poly(ether‐imide)/multiwalled carbon nanotube/carbon fibers composites for aeronautical application

Santos

Ribeiro

Hein

et al. 2020

J of Applied Polymer Sci

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This work concerns the fatigue behavior at three different temperature conditions (−40, 20, and 80 C) and the addition of multiwalled carbon nanotube (MWCNT) into a carbon-fiber reinforced poly(ether-imide) composite. The incorporation of MWCNT into the composite increased the tensile strength and Young's modulus by up 5 and 2%, respectively. At low temperature, the incorporation of the nanoparticles improved the fatigue strength of the laminates by 15%. The shear strength results obtained by interlaminar shear strength and compression shear test tests have shown an increase of about 16 and 58%, respectively, by the introduction of nanotubes into the laminates. Fractographic observations revealed that the surface of carbon nanotube laminate (PEI/MWCNT/CF) presented a ductile behavior, and differences in the fracture aspects of the material compared to the traditional PEI/CF laminate have been observed.

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“…Uniqueness of physical properties of carbon nanotubes (CNTs) basically define by their thermodynamics state, namely, the most CNT applications in microelectronics [ 1 ], polymer nanocomposites [ 2 , 3 ], displays [ 4 ], solar panels [ 5 ], membranes [ 6 ], and many others [ 7 , 8 ], require stable homogeneous CNT dispersions without agglomerates or bundles. Unfortunately, CNTs, like all nano-sized objects, tend to aggregate.…”

Section: Introductionmentioning

confidence: 99%

Study of Dispersions of Carbon Nanotubes Modified by the Method of Rapid Expansion of Supercritical Suspensions

et al. 2020

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The effectiveness of carbon nanotubes (CNT) deagglomeration by rapid expansion of supercritical suspensions (RESS) in nitrogen and carbon dioxide fluids was studied in this work. Two different mechanisms of deagglomeration were proposed for these two fluids at various temperature and pressure conditions. Ultrasound attenuation spectroscopy was applied as an express method of determining median diameter and aspect ratio of CNTs. At least twofold reduction of the diameter was shown for CNT bundles processed by RESS technique. Aspect ratio of processed CNTs, calculated from acoustic attenuation spectra, increased to 340. These results were in a good agreement with atomic force microscopy data.

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Preparation of polymer – multi-walled carbon nanotube composites with enhanced mechanical properties using supercritical antisolvent precipitation

Cited by 24 publications

References 18 publications

Processing, thermal and mechanical behaviour of PEI/MWCNT/carbon fiber nanostructured laminate

Processing, thermal and mechanical behaviour of PEI/MWCNT/carbon fiber nanostructured laminate

The effect of temperature on fatigue strength of poly(ether‐imide)/multiwalled carbon nanotube/carbon fibers composites for aeronautical application

Study of Dispersions of Carbon Nanotubes Modified by the Method of Rapid Expansion of Supercritical Suspensions

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