Morphology and mechanical properties of carbon fiber reinforced composites based on semicrystalline polyimides modified by carbon nanofibers

Yudin, V. E.; Svetlichnyi, V. M.; Shumakov, A. N.; Schechter, Rinat; Harel, H.; Marom, G.

doi:10.1016/j.compositesa.2007.08.026

Cited by 52 publications

(33 citation statements)

References 10 publications

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“…Chen et al (2011) showed that the incorporation of CNF interlayers (made from electrospun PAN nanofibers) into composite laminates resulted in significant increases in both in-plane and out-of-plane plane properties. The capabilities of CNF as efficient interlayers were reported on several other studies in the literature, with special attention on the crack-bridging characteristics on Mode I (Palmeri et al, 2011;Yudin et al, 2008;Sadeghian et al, 2006;Rodriguez et al, 2011;Hossain et al, 2013).…”

Section: Nanofibrous Interlayers For Composite Materialsmentioning

confidence: 94%

Interlayer toughening mechanisms of composite materials

Bilge

Papila

2015

Toughening Mechanisms in Composite Materials

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Section: Nanofibrous Interlayers For Composite Materialsmentioning

confidence: 94%

Interlayer toughening mechanisms of composite materials

Bilge

Papila

2015

Toughening Mechanisms in Composite Materials

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“…Yudin et al 17,[23][24][25]29 investigated the crystallization initiation of the semicrystalline thermoplastic polyimide R-BAPB based on dianhydride 1,3-bis-(3 0 ,4-dicarboxyphenoxy)-benzene (dianhydride R) and 4,4 0 -bis-(4 00 -aminophenoxy)-diphenyl (diamine BAPB) in the composites with different nanollers. In particular, the authors have demonstrated that vapor grown carbon nanobers (VGCF) are twice as efficient in accelerating the crystalline formation as CNT.…”

Section: A Introductionmentioning

confidence: 99%

“…In some cases, a nanoller can initiate the crystallization of the polymer matrix, 18,[20][21][22][23][24][25] signicantly accelerating the formation of crystallites, or even initiating their formation in the polymer under conditions which do not normally favor the crystallization, as in the case of ODPA-P3 polyimide. 26 Crystallization of a polymer matrix in a nanocomposite may signicantly impact its mechanical and thermophysical properties, which should be taken into account when developing new composite materials.…”

Section: A Introductionmentioning

confidence: 99%

Influence of the carbon nanofiller surface curvature on the initiation of crystallization in thermoplastic polymers

et al. 2014

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Experimental results have shown that graphitizated carbon nanofibers initiate crystallization in R-BAPB polyimides twice as fast as single-wall carbon nanotubes (CNT) leading to the hypothesis that nanofiller curvature influences polyimide crystallization. Therefore, atomistic molecular-dynamics simulations have been performed for R-BAPB in the presence of a flat graphene sheet and the results were compared with those obtained in the presence of a small-radius CNT. The polyimide chain segments tend to lie parallel to the nanofiller surface and this tendency is stronger and the segments are closer to the graphene surface than to the CNT one. Moreover, the density of the polyimide in the near-surface layer is higher for composites filled with graphene than with CNT. This confirms the assumption that the nanofiller surface curvature is indeed a factor influencing the polymer patterning structure, and that a smaller curvature (i.e. flat surface) provides an enhanced initiation of polymer ordering. A IntroductionOne of the most promising ways to improve the performance of polymeric materials consists of developing polymer composites.1-3 Signicant changes aer addition of a ller are inuenced by the polymer and ller properties, but also by the interface interactions between both components. The use of nanoscalereinforcing llers leading to a considerable increase in the interaction area between the composite components has driven the interest of researchers in last years.4-11 Allotropic carbon compounds (carbon black, fullerenes, single-and multiwall nanotubes, nanobers and graphene sheets) are among the popular nanollers. 4,7,9,[11][12][13][14][15][16][17] Polymers with a relatively simple or complicated molecular structure have been and are currently used as matrices in nanocomposite materials. 4,[17][18][19] By combining different types of matrices and nanollers, it is possible to obtain composites with a wide range of physical properties. In some cases, a nanoller can initiate the crystallization of the polymer matrix, 18,20-25 signicantly accelerating the formation of crystallites, or even initiating their formation in the polymer under conditions which do not normally favor the crystallization, as in the case of ODPA-P3 polyimide.26 Crystallization of a polymer matrix in a nanocomposite may signicantly impact its mechanical and thermophysical properties, which should be taken into account when developing new composite materials.18,27,28 The advantage of using nanoparticles for initiation of crystallization is that the formation of a large number of nanoscale crystallites improves the strength of the nanocomposite preventing the typical failure on the boundary area between crystalline regions, thus improving the performance of the material. Therefore, the question arises on how the physical properties of carbon nanollers affect the initiation of crystallization in semicrystalline thermoplastic matrices.Yudin et al. 17,[23][24][25]29 investigated the crystallization initiation of the semicrystalline ther...

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“…orientation [22]. However, in previous studies on vectra/nanofiber composites [23,24] it was shown that addition of nanofibers reduces the anisotropy of the material, because of the anchoring effect of the CNP, which disturbs the nematic order.…”

Section: Thermotropic Transitions and Filament Structurementioning

confidence: 96%