Masterbatch-based multi-walled carbon nanotube filled polypropylene nanocomposites: Assessment of rheological and mechanical properties

Prashantha, K.; Soulestin, J.; Lacrampe, Marie‐France; Krawczak, Patricia; Dupin, G.; Claes, Michaël

doi:10.1016/j.compscitech.2008.10.005

Cited by 350 publications

(242 citation statements)

References 46 publications

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“…Nevertheless, distribution of masterbatch and subsequent dispersion of nanotubes in the polymer matrix after processing needs to be ascertained. Recent studies from our laboratory reported the compounding of masterbatch based PP-multi wall carbon nanotubes (MWNTs) nanocomposites using twin screw extrusion process [23]. The results showed good mechanical properties, similar to those obtained with direct mixing of MWNTs in PP matrix as reported in the literature [24,25].…”

Section: Introductionsupporting

confidence: 66%

Multi-walled carbon nanotube filled polypropylene nanocomposites based on masterbatch route: Improvement of dispersion and mechanical properties through PP-g-MA addition

Prashantha¹,

Soulestin²,

Lacrampe³

et al. 2008

Express Polym. Lett.

Self Cite

192

137

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Abstract. Multi-wall carbon nanotubes (MWNTs) filled polypropylene (PP) nanocomposites were prepared through diluting a PP/MWNT masterbatch in a PP matrix by melt compounding with a twin screw extruder. Polypropylene grafted maleic anhydride (PP-g-MA) was used to promote the carbon nanotubes dispersion. The effect of PP-g-MA addition on the rheological, mechanical and morphological properties of the nanocomposites was assessed for different MWNTs loadings. Scanning electron microscopy (SEM) has shown that nanotubes are distributed reasonably uniformly. A better dispersion and good adhesion between the nanotubes and the PP matrix is caused by wrapping of PP-g-MA on MWNTs. When PP-g-MA is added, dynamic moduli and viscosity further increases compared to PP/MWNT nanocomposites. The rheological percolation threshold drops significantly. Tensile and flexural moduli and Charpy impact resistance of the nanocomposites also increases by the addition of PP-g-MA. The present study confirms that PP-g-MA is efficient to promote the dispersion of MWNTs in PP matrix and serves as an adhesive to increase their interfacial strength, hence greatly improving the rheological percolation threshold and mechanical properties of PP/MWNT nanocomposites.

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Section: Introductionsupporting

confidence: 66%

Multi-walled carbon nanotube filled polypropylene nanocomposites based on masterbatch route: Improvement of dispersion and mechanical properties through PP-g-MA addition

Prashantha¹,

Soulestin²,

Lacrampe³

et al. 2008

Express Polym. Lett.

Self Cite

192

137

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show abstract

“…Furthermore, the G' values of samples prepared by the MB compounding method (Fig.1c) were higher to those prepared by the SP compounding method. These results indicated that preparation of cellulose composites from MB obtained a well-dispersed cellulose and increase melt elasticity (Prashantha et al 2009). The complex viscosity (η*) of the neat HDPE and the UFC-filled HDPE composites measured at 170 °C as a function of frequency (ω) is shown in Fig.…”

Section: Rheological Propertiesmentioning

confidence: 78%

“…As previously mentioned, the primary problem associated with micro-and nanocomposites is their ability to obtain a homogeneous dispersion of fillers within the polymer matrix (Prashantha et al 2009). The homogenous dispersion of micro-and nanoparticles is difficult within a polymer blend.…”

Section: Introductionmentioning

confidence: 99%

“…This method has been applied to overcome the shortcomings of filler homogeneity and to improve processing characteristics, physical, and mechanical properties of composites (Lee et al 2008;Joo et al 2011). Importantly, the dispersion of micro-and nanocellulose in MBs should be investigated and the dilution process should be carried out under appropriate processing conditions to obtain a well-dispersed micro-and nanocellulose PE matrix, as seen in multi-wall carbon nanotube nanocomposites (Prashantha et al 2009). It is also necessary to understand the effects of cellulose and compatibilizers on the mechanical, thermal, and rheological properties of polymer/ cellulose composites (Lee et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Ultrafine Cellulose-filled High-Density Polyethylene Composites Prepared using Different Compounding Methods

Boran¹,

Kızıltaş²,

Kiziltas³

et al. 2016

BioResources

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An extensional flow mixture (EFM) system was studied, with the goal of achieving better distributive and dispersive mixing. The effects of different mixing strategies (masterbatch method (MB), polyethylene-grafted maleic anhydride (PE-g-MA) as a compatibilizer, and compounding devices, such as a single screw extruder (SSE), a twin screw extruder (TSE), and an extensional flow mixer (EFM)) on the mechanical, thermal, rheological, and morphological properties of ultrafine cellulose (UFC)-filled highdensity polyethylene (HDPE) composites were investigated. Maximum tensile strength (17.7 MPa), tensile modulus (0.88 GPa), flexural strength (18.8 MPa), and flexural modulus (0.63 GPa) were obtained from the MB compounding method. The maximum stress-strain (13.8%) was obtained with EFM compounding. Polymer composites from SSE and SSE/EFM compounding methods with PE-g-MA exhibited slightly higher crystallinity compared with other compounding methods. The storage modulus of the samples prepared with the MB method was higher than those prepared with the SSE compounding method. The UFC-filled HDPE composites from the EFM compounding process exhibited lower melt viscosities than the other composites at high shear rates. Scanning electron microscopy (SEM) images showed the cellulose to be distributed and dispersed reasonably well in the HDPE matrix when using a coupling agent in combination with the MB and EFM compounding methods.

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“…Among the various existing polymers, polypropylene (PP) is a good compromise between properties, cost, and easiness of processability, making it a popular choice as the matrix phase (Prashantha et al, 2009;McIntosh et al, 2006;Jose et al, 2007;Xia et al, 2004;Kang et al, 2010;Manchado et al, 2005;Dondero and Gorga, 2006, among others). The properties of the resulting PP/CNTs nanocomposites depend not only on the properties of the nano-fillers (e.g.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational micro-mechanical investigations of compressive properties of polypropylene/multi-walled carbon nanotubes nanocomposite foams

Wan¹,

Tran

Leblanc

et al. 2015

Mechanics of Materials

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The compressive behavior of nanocomposite foams is studied by both experimental and computational micro-mechanics approaches with the aim of providing an efficient computational model for this kind of material.The nanocomposites based on polypropylene (PP) and different contents of multi-walled carbon nanotubes (CNTs) method. The nanocomposite samples are foamed using super-critical carbon dioxide (ScCO 2 ) as blowing agent at different soaking temperatures. The influence of this foaming parameter on the morphological characteristics of the foam micro-structure is discussed. Differential Scanning Calorimetry (DSC) measurements are used to quantify the crystallinity degree of both nanocomposites and foams showing that the crystallinity degree is reduced after the foaming process. This modification leads to mechanical properties of the foam cell walls that are different from the raw nanocomposite PP/CNTs material. Three-point bending tests are performed on the latter to measure the flexural modulus in terms of the crystallinity degree. Uniaxial compression tests are then performed on the foamed samples under quasi-static conditions in order to extract the macro-scale compressive response. Next, a two-level multi-scale approach is developed to model the behavior of the foamed nanocomposite material. On the one hand, the micromechanical properties of nanocomposite PP/CNTs cell walls are evaluated from a theoretical homogenization model accounting for the micro-structure of the semi-crystalline PP, for the degree of crystallinity, and for the CNT volume fraction. The applicability of this theoretical model is demonstrated via the comparison with experimental data from the described experimental measurements and from literature. On the other hand, the macroscopic behavior of the foamed material is evaluated using a computational micromechanics model using tetrakaidecahedron unit cells and periodic boundary conditions to estimate the homogenized properties. The unit cell is combined with several geometrical imperfections in order to capture the elastic collapse of the foamed material. The numerical results are compared to the experimental measurements and it is shown that the proposed unit cell computational micro-mechanics model can be used to estimate the homogenized behavior, including the linear and plateau regimes, of nanocomposite foams.

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Masterbatch-based multi-walled carbon nanotube filled polypropylene nanocomposites: Assessment of rheological and mechanical properties

Cited by 350 publications

References 46 publications

Multi-walled carbon nanotube filled polypropylene nanocomposites based on masterbatch route: Improvement of dispersion and mechanical properties through PP-g-MA addition

Multi-walled carbon nanotube filled polypropylene nanocomposites based on masterbatch route: Improvement of dispersion and mechanical properties through PP-g-MA addition

Characterization of Ultrafine Cellulose-filled High-Density Polyethylene Composites Prepared using Different Compounding Methods

Experimental and computational micro-mechanical investigations of compressive properties of polypropylene/multi-walled carbon nanotubes nanocomposite foams

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