Microscopic mechanism of reinforcement in single-wall carbon nanotube/polypropylene nanocomposite

Chang, Tienchong; Jensen, Lars Rosgaard; Kisliuk, A.; Pipes, R. Byron; Pyrz, Ryszard; Sokolov, A. P.

doi:10.1016/j.polymer.2004.11.030

Cited by 199 publications

(107 citation statements)

References 38 publications

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“…Most of the previous studies have used the Raman features of the CNTs to analyze the stress transfer in polymer composites. [39][40][41][42][43] Park and Lillehi reported that a FULL PAPER combination of optical microscopy and Raman imaging provides more accurate information of CNT dispersion at several length scales. 38 Similarly, Du et al used the intensity distribution under the sampling volume around the second order graphitic band, G 0 band (2700 cm À1 ), of reduced single-walled carbon nanotubes/polymethyl methacrylate nanocomposites to obtain Raman maps of CNT dispersion in epoxy matrix.…”

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confidence: 99%

The effect of mixing methods on the dispersion of carbon nanotubes during the solvent‐free processing of multiwalled carbon nanotube/epoxy composites

Gupta

Sydlik

Schnorr

et al. 2012

J Polym Sci B Polym Phys

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Several solvent-free processing methods to disperse multiwalled carbon nanotubes (MWCNTs) in bisphenol F-based epoxy resin were investigated, including the use of a microfluidizer (MF), planetary shear mixer (PSM), ultrasonication (US) and combinations. The processed mixture was cured with diethyl toluene diamine. Three complimentary techniques were used to characterize the dispersion of the MWCNTs in cured composite samples: optical microscopy, micro Raman spectroscopy, and scanning electron microscopy (SEM). For sample MF þ PSM, optical micrographs and Raman images showed reduced agglomeration and a homogeneous distribution of MWCNTs in the epoxy matrix. SEM analysis of fractured specimen after tensile testing revealed breakage of nanotubes along the fracture surface of the composite. A comparison of the MWCNT dispersion in the epoxy samples processed using different methods showed that a combination of MF and PSM processing yields a more homogeneous sample than the PSM or US þ PSM processed samples. Mechanical testing of the composites showed about 15% improvement in the tensile strength of samples processed by the MF þ PSM method over other methods. Thermogravimetric analysis (TGA) results showed a small decrease in the onset degradation temperature for poorly dispersed samples produced by PSM compared with the well-mixed samples (MF þ PSM). These results strongly suggest that the MF þ PSM processing method yield better-dispersed and stronger MWCNT/epoxy composites.

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confidence: 99%

The effect of mixing methods on the dispersion of carbon nanotubes during the solvent‐free processing of multiwalled carbon nanotube/epoxy composites

Gupta

Sydlik

Schnorr

et al. 2012

J Polym Sci B Polym Phys

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“…The tensile strength of CNTs is 100 times greater than that of steel, and the electrical and thermal conductivities approach those of copper [27,28]. These unique properties make CNTs good candidates as fillers in different polymers and ceramics to realize desirable consumer products [29,30]. It has also been predicted that CNT-based field-effect transistors (FETs) will soon supplant their silicon-based analog counterparts [31].…”

Section: Propertiesmentioning

confidence: 99%

“…Thus, the fourth valence electron remains free in each unit, and these free electrons are delocalized over all atoms and contribute to the electrical nature of CNTs. Thus, CNTs can be conducting or semi-conducting types depending on the type of chirality [25][26][27][28][29][30][31][32][33][34][35][36][37] Semiconducting SWNTs are usually in the form of p-type semiconductors [38]. MWNTs are composed of many tubes of SWNTs and therefore are not likely to be strictly one-dimensional conductors.…”

Section: Electronic Nature Of Cntsmentioning

confidence: 99%

Carbon nanotubes-properties and applications: a review

Ibrahim¹

2013

Carbon letters

391

122

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The carbon nanotube (CNT) represents one of the most unique inventions in the field of nanotechnology. CNTs have been studied closely over the last two decades by many researchers around the world due to their great potential in different fields. CNTs are rolled graphene with SP 2 hybridization. The important aspects of CNTs are their light weight, small size with a high aspect ratio, good tensile strength, and good conducting characteristics, which make them useful as fillers in different materials such as polymers, metallic surfaces and ceramics. CNTs also have potential applications in the field of nanotechnology, nanomedicine, transistors, actuators, sensors, membranes, and capacitors. There are various techniques which can be used for the synthesis of CNTs. These include the arc-discharge method, chemical vaporize deposition (CVD), the laser ablation method, and the sol gel method. CNTs can be single-walled, double-walled and multi-walled. CNTs have unique mechanical, electrical and optical properties, all of which have been extensively studied. The present review is focused on the synthesis, functionalization, properties and applications of CNTs. The toxic effect of CNTs is also presented in a summarized form.

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“…Recently much attention has been focused on Polypropylene /organoclay nanocomposites preparation by melt blending method [21], which is a solvent free approach and industrial viable to synthesize polymerclay nanocomposite and broadly applicable to many polar and nonpolar polymers. In this study, nonwoven fabric of PP and PP/nanoclay composite were prepared by spun bond technique on lab spunbonding machine.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene/Nanoclay Nonwoven Composites; Preparation, Thermal and Mechanical Properties

Bhattacharya¹

2015

IJIRSET

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PP/nanoclay nonwoven composites were prepared by spun bond technology on spunbonding machine. The prepared nonwoven composites were characterized by SEM and EDX techniques. The thermal properties were analyzed using DSC, revels lower Tg inflection point as well as H value for nonwoven with nanoclay addition. This composite nonwoven fabric was also evaluated for the change in their mechanical properties. The tensile strength was found increased with the addition of nanoclay. The tear strength of pp/nanoclay nonwoven was also found improved, compared to the nonwoven prepared without the addition of nanoclay.

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Microscopic mechanism of reinforcement in single-wall carbon nanotube/polypropylene nanocomposite

Cited by 199 publications

References 38 publications

The effect of mixing methods on the dispersion of carbon nanotubes during the solvent‐free processing of multiwalled carbon nanotube/epoxy composites

The effect of mixing methods on the dispersion of carbon nanotubes during the solvent‐free processing of multiwalled carbon nanotube/epoxy composites

Carbon nanotubes-properties and applications: a review

Polypropylene/Nanoclay Nonwoven Composites; Preparation, Thermal and Mechanical Properties

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