Reinforcement mechanisms in MWCNT-filled polycarbonate

Eitan, A.; Fisher, Frank T.; Andrews, Rodney; Brinson, L. Catherine; Schadler, Linda S.

doi:10.1016/j.compscitech.2005.10.004

Cited by 319 publications

(191 citation statements)

References 64 publications

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“…The enhanced results for GNP are attributed to the superior interfacial bonding and persistently good dispersion: as the number of platelets increases, they impact the modulus both by their own inherent stiffness as well as by the enhanced stiffness of the increased ''interphase'' zone of affected polymer, as has been demonstrated in carbon nanotube/composite systems with strong tube-polymer interaction. 9,53,58,59 To compare our experimental results to other data in the literature on ''graphite''-containing nanocomposites, the storage modulus results are normalized against the property of the polymer ''Big'' particles are those with lateral dimension w >10mm; ''small'' particles are those with lateral dimension 1 < w < 10 mm. a N is the average number of particle centroids per unit area.…”

Section: Discussionmentioning

confidence: 99%

Graphitic nanofillers in PMMA nanocomposites—An investigation of particle size and dispersion and their influence on nanocomposite properties

Ramanathan

Stankovich

Dikin

et al. 2007

J Polym Sci B Polym Phys

239

168

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Mechanical, thermal, and electrical properties of graphite/PMMA composites have been evaluated as functions of particle size and dispersion of the graphitic nanofiller components via the use of three different graphitic nanofillers: ''as received graphite'' (ARG), ''expanded graphite,'' (EG) and ''graphite nanoplatelets'' (GNPs) EG, a graphitic materials with much lower density than ARG, was prepared from ARG flakes via an acid intercalation and thermal expansion. Subsequent sonication of EG in a liquid yielded GNPs as thin stacks of graphitic platelets with thicknesses of $10 nm. Solution-based processing was used to prepare PMMA composites with these three fillers. Dynamic mechanical analysis, thermal analysis, and electrical impedance measurements were carried out on the resulting composites, demonstrating that reduced particle size, high surface area, and increased surface roughness can significantly alter the graphite/polymer interface and enhance the mechanical, thermal, and electrical properties of the polymer matrix.

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Section: Discussionmentioning

confidence: 99%

Graphitic nanofillers in PMMA nanocomposites—An investigation of particle size and dispersion and their influence on nanocomposite properties

Ramanathan

Stankovich

Dikin

et al. 2007

J Polym Sci B Polym Phys

239

168

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“…Introduction of small quantities of CNTs into a polymer matrix can lead to obtain structural composites with high elastic modulus, high tensile and compressive strength and stiffness. The mechanical properties combined with electrical, thermal, optical and many other properties have been extensively investigated by many research groups for wide range of applications [22][23][24][25][26][27][28][29][30]. In this work, poly(trimethylene terephthalate)/multiwalled carbon nanotubes nanocomposites were prepared by in situ polymerization method.…”

mentioning

confidence: 99%

Preparation and characterization of nanocomposites based on COOH functionalized multi-walled carbon nanotubes and on poly(trimethylene terephthalate)

Szymczyk¹,

Rosłaniec²,

Zenker³

et al. 2011

Express Polym. Lett.

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Poly(trimethylene terephthalate) nanocomposites containing COOH functionalized multi-walled nanotubes were synthesized with in situ polymerization method. The microstructure of the nanocomposites was studied by SEM, in terms of the dispersion state of the nanotubes and the polymer–nanotube interface. The thermal behaviour, mechanical properties and conductivity of these resultant PTT/MWCNTs nanocomposites were studied. The effect of the presence of MWCNTs on cold crystallization of PTT was monitored by dielectric spectroscopy. From thermal analysis study, it is found that the melting temperature and glass transition temperature are not significantly affected by the addition of MWCNTs. The crystallization temperature of PTT matrix is affected by the presence of CNTs. Nanocomposites have slightly higher degree of crystallinity than neat PTT and their thermo-oxidative stability is not significantly affected by the addition of MWCNTs. The study of the isothermal cold crystallization of amorphous PTT and its nanocomposites monitored by dielectric spectroscopy reveals that the presence of MWCNTs have influence on crystallization rate, especially at higher concentration (0.3 wt%). In comparison with neat PTT, the MWCNTs reinforced nanocomposites posses higher tensile strength and Young’s modulus at low MWCNTs loading (0.05–0.3 wt%). In addition, all nanocomposites show reduction of brittleness as compared to the neat PTT. The electrical percolation threshold was found between 0.3 and 0.4 wt% loading of MWCNTs

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“…CNTs are of great interest due to their potential applications in different fields of science and technology; they offer a combination of mechanical, electrical, and thermal properties that no other material has displayed before (Coleman et al 2006). The integration of CNT/polymer composites has been focused on the improvement of mechanical and electrical properties of the matrix (Ramanathan et al 2005;Frankland et al 2003;Eitan et al 2006); however, in order to take advantages of such properties CNTs have to be both compatible and intimately dispersed within the polymer host. Nevertheless, due to strong Vander Waals forces, CNTs have a great tendency to self-aggregate (Hill et al 2002;Park et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Cation exchange resin nanocomposites based on multi-walled carbon nanotubes

et al. 2012

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Carbon nanotubes (CNTs) are of great interest due to their potential applications in different fields such as water treatment and desalination. The increasing exploitation of multi-walled carbon nanotubes (MWCNTs) into many industrial processes has raised considerable concerns for environmental applications. The interactions of soluble salt with MWNCTs influence in the total salt content in saline water. In this work, we synthesized two cation exchange resins nano composites from polystyrene divinylbenzene copolymer (PSDVB) and pristine MWNCTs. The prepared compounds were characterized using infra red spectroscopy, thermal stability, X-ray diffraction, and electro scan microscope. Also, the ion capacities of prepared cation exchange resins were determined by titration. Based on the experimental results, it was found that the thermal stability of prepared nanocomposites in the presence of MWNCTs increased up to 617°C. The X-ray of PSDVB and its sulfonated form exhibits amorphous pattern texture structure, whereas the nano composite exhibits amorphous structure with indication peak at 20°and 26°for the PSDVB and MWCNTs, respectively. The ion-exchange capacity increased from 225.6 meq/100 g to 466 mg/100 g for sulfonated PSDVB and sulfonated PSDVB MWNCTs-pristine, respectively.

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Reinforcement mechanisms in MWCNT-filled polycarbonate

Cited by 319 publications

References 64 publications

Graphitic nanofillers in PMMA nanocomposites—An investigation of particle size and dispersion and their influence on nanocomposite properties

Graphitic nanofillers in PMMA nanocomposites—An investigation of particle size and dispersion and their influence on nanocomposite properties

Preparation and characterization of nanocomposites based on COOH functionalized multi-walled carbon nanotubes and on poly(trimethylene terephthalate)

Cation exchange resin nanocomposites based on multi-walled carbon nanotubes

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