Synergy in hybrid polymer/nanocarbon composites. A review

Szeluga, Urszula; Kumanek, Bogumiła; Trzebicka, Barbara

doi:10.1016/j.compositesa.2015.02.021

Cited by 280 publications

(194 citation statements)

References 129 publications

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“…In most cases, a synergetic effect is clearly observed upon incorporation of nanofillers into a polymer matrix, although in certain cases negative synergy has been reported. The preparation process and the type of carbon filler used determine the interactions between the filler particles as well as between the fillers and the polymer matrix [28]. Investigations regarding CNT [29][30][31] and GO [32][33][34] containing PNIPA based composite systems show improved mechanical properties (elastic modulus and compressive strength).…”

Section: Introductionmentioning

confidence: 99%

Thermal sensitivity of carbon nanotube and graphene oxide containing responsive hydrogels

Manek

Berke

Miklósi

et al. 2016

Express Polym. Lett.

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Abstract.Comparative investigations are reported on poly(N-isopropylacrylamide) (PNIPA) gels of various carbon nanotube (CNT) and graphene oxide (GO) contents synthesized under identical conditions. The kind and concentration of the incorporated carbon nanoparticles (CNPs) influence the swelling and stress-strain behaviour of the composites. Practically independently of the filler content, incorporation of CNPs appreciably improves the fracture stress properties of the gels. The time constant and the swelling ratio of the shrinkage following an abrupt increase in temperature of the swelling medium from 20 to 50°C can be adjusted by selecting both the type and the amount of nanoparticle loading. This offers a means of accurately controlling the deswelling kinetics of drug release with PNIPA systems, and could be employed in sensor applications where fast and excessive shrinkage are a significant drawback. Both CNTs and GO enhance the infrared sensitivity of the PNIPA gel, thus opening a route for the design of novel drug transport and actuator systems. It is proposed that the influence of the CNPs depends more on their surface reactivity during the gel synthesis rather than on their morphology. One of the important findings of this study is the existence of a thermally conducting network in the GO filled gels.

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Section: Introductionmentioning

confidence: 99%

Thermal sensitivity of carbon nanotube and graphene oxide containing responsive hydrogels

Manek

Berke

Miklósi

et al. 2016

Express Polym. Lett.

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“…Recently, features such as crystallinity, shape anisotropy, density, surface area and oil absorption of CNT, a nanosized graphite and CB have been comparatively investigated [23,24]. Moreover, studies on synergistic effects have been performed, both in thermoplastic [15] and elastomeric matrices [24][25][26][27]. In particular, in poly(1,4-cis-isoprene) as the polymer matrix, the synergistic effect on the mechanical…”

Section: Introductionmentioning

confidence: 99%

“…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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“…The highest DC conductivity value 8.9 mS/m is observed in MWCNT:GNP mixed filler composites with proportions 5:1 (total content 0.3 wt.%) and it is increased by four orders of magnitude over that of composites containing 0.3 wt.% MWCNTs. Such high value is clearly higher than can be predicted by a simple rule of mixtures (ROM) theory [27] …”

Section: Electrical Propertiesmentioning

confidence: 57%

Enhancing electrical conductivity of multiwalled carbon nanotube/epoxy composites by graphene nanoplatelets

Kranauskaitė¹,

Macutkevič²,

Borisova³

et al. 2018

physics

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The need of high performance integrated circuits and high power density communication devices drives the development of materials enhancing the conductive performances by carbon nanoparticles. Among nanocomposites, the ternary hybrid carbon nanotubes/graphene nanoplatelets/polymer composites represent a debatable route to enhance the transport performances.In this study hybrid ternary nanocomposites were manufactured by direct mixing of multiwalled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) at a fixed filler content (0.3 wt.%), but different relative combination, within an epoxy system. MWNT/epoxy nanocomposites were manufactured for comparison. The quality of dispersion was evaluated by optical and scanning electron microscopy (SEM). The electrical properties of hybrid composites were measured in the temperature range from 30 up to 300 K.The synergic combination of 1D/2D particles did not interfere with the percolative behaviour of MWCNTs but improved the overall electrical performances. The addition of a small amount of GNPs (0.05 wt.%) led to a strong increment of the sample conductivity over all the temperature range, compared to that of mono filler systems.

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Synergy in hybrid polymer/nanocarbon composites. A review

Cited by 280 publications

References 129 publications

Thermal sensitivity of carbon nanotube and graphene oxide containing responsive hydrogels

Thermal sensitivity of carbon nanotube and graphene oxide containing responsive hydrogels

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

Enhancing electrical conductivity of multiwalled carbon nanotube/epoxy composites by graphene nanoplatelets

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