A methodology to orient carbon nanotubes in a thermosetting matrix

Lionetto, Francesca; Calò, Emanuela; Benedetto, Francesca Di; Pisignano, Dario; Maffezzoli, Alfonso

doi:10.1016/j.compscitech.2014.02.016

Cited by 33 publications

(25 citation statements)

References 65 publications

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“…In this context, a large amount of studies have been published relating to the influence of fibre length and orientation (Peters, 1997;Lionetto et al, 2014). As with inorganic fibres, the highest stiffness and tensile strength for natural fibres was found when the fibres are orientated unidirectional and the tensile tests were conducted in fibre direction (Ben et al, 2007;.…”

Section: Introductionmentioning

confidence: 98%

Influence of fibre architecture on the biodegradability of FLAX/PLA composites

Bayerl

Geith

Somashekar

et al. 2014

International Biodeterioration & Biodegradation

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Section: Introductionmentioning

confidence: 98%

Influence of fibre architecture on the biodegradability of FLAX/PLA composites

Bayerl

Geith

Somashekar

et al. 2014

International Biodeterioration & Biodegradation

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“…Carbon nanotubes (CNT), both single [1,2] and multi-walled [3,4], graphene (G) [5][6][7][8] or graphitic nanofillers made of a few layers of graphene [9][10][11][12] are used to improve properties such as mechanical reinforcement, electrical and thermal conductivity, thermal and flame resistance, of thermoplastic [13][14][15], elastomeric [14][15][16][17][18] and thermoset [19][20][21] matrices. Such nanosized carbon allotropes can be dispersed as individual particles in the polymer matrix and, thanks to their high surface area, can establish large interaction with the polymer, much larger than the one observed with nanostructured carbon black (CB), whose primary particles are fused together to form aggregates [22].…”

Section: Introductionmentioning

confidence: 99%

Master curves for the sulphur assisted crosslinking reaction of natural rubber in the presence of nano- and nano-structured sp2 carbon allotropes

Musto¹,

Barbera²,

Cipolletti³

et al. 2017

Express Polym. Lett.

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Abstract. In this paper, master curves are reported for the crosslinking of a diene rubber with a sulphur based system in the presence of either nano-or nano-structured carbon allotropes, such as carbon nanotubes (CNT), a nanosized graphite with high surface area (HSAG) and carbon black (CB). Poly(1,4-cis-isoprene) from Hevea Brasiliensis was the diene rubber and crosslinking was performed in temperatures ranging from 151 to 180°C, with carbon allotropes below and above their percolation threshold. Such carbon allotropes were characterized by different aspect ratio, surface area and pH. However, in the crosslinking reaction, they revealed common behaviour. In fact, the specific interfacial area could be used to correlate crosslinking parameters, such as induction time (t s1 ) and activation energy (E a ) calculated by applying the autocatalytic model. Monotonous decrease of t s1 and increase of E a were observed, with points lying on master curves, regardless of the nature of the carbon allotropes. Remarkable differences were however observed in the structure of the crosslinking network: when the carbon allotrope was above the percolation threshold much larger crosslinking density was obtained in the presence of CNT whereas composites based on HSAG became soluble in hydrocarbon solvent, after the reaction with a thiol. Proposed explanation of these results is based on the reactivity of carbon allotropes with sulphur and sulphur based compounds, demonstrated through the reaction of 1-dodecanethiol and sulphur with CNT and HSAG and with a model substrate such as anthracene.

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“…This problem is common to all nanofillers and is reflected in a very low content typically dispersed in the polymer matrices. Therefore, despite the very intense research efforts of the last ten years, the mechanical properties of nanocomposites are still lower if compared to those of structural composites reinforced with high performance continuous fibers, where the reinforcement content can reach up to 60% by volume [16][17].…”

Section: Introductionmentioning

confidence: 97%

Orientation of Graphene Nanoplatelets in Thermosetting Matrices

Greco

Lionetto

Maffezzoli

2016

IEEE Trans. Nanotechnology

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A simple procedure for the alignment of graphene nanoplatelets (GNPs) in a thermosetting matrix is presented. First, the alignment of GNPs in thermoplastic fibers of amorphous polyetylene terephthalate (aPET) is achieved by a fiber spinning process. The nanocomposite fibers, obtained with a very high filler content (10 wt%), are then transferred into a reactive epoxy resin. After dissolution of aPET, the nanofillers remained oriented in the thermosetting matrix. The characterization of the obtained nanocomposites has been carried by means of different experimental techniques which provided complementary results. The proposed method has the potential to be used in the manufacturing of hierarchical composites, by introducing nanofilled microfibers into continuous fibers reinforced composites.

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A methodology to orient carbon nanotubes in a thermosetting matrix

Cited by 33 publications

References 65 publications

Influence of fibre architecture on the biodegradability of FLAX/PLA composites

Influence of fibre architecture on the biodegradability of FLAX/PLA composites

Master curves for the sulphur assisted crosslinking reaction of natural rubber in the presence of nano- and nano-structured sp2 carbon allotropes

Orientation of Graphene Nanoplatelets in Thermosetting Matrices

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