Dynamic Compressive Behavior of a Melt Mixed Polypropylene/Organoclay Nanocomposites

Wang, Kui; Boumbimba, Rodrigue Matadi; Bahlouli, Nadia; Ahzi, Saı̈d; Müller, René; Bouquey, Michel

doi:10.1115/1.4005420

Cited by 25 publications

(17 citation statements)

References 33 publications

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“…4, 5 and 6, the yield stress of PP-Nanocor is higher than those of neat PP under the same testing conditions. This is due to the presence of rigid fillers in PP-Nanocor [12]. PP-EPR has the lowest yield stress compared to those of neat PP and PP-Nanocor under the same testing conditions.…”

Section: Resultsmentioning

confidence: 96%

“…In order to have the same experimental environment for each specimen, at each change of temperature, the furnace was first held at the required temperature without specimen for half an hour to obtain a uniform temperature field [12]. Then the specimen was inserted into the furnace for 15 min to produce thermal equilibration.…”

Section: Materials and Experimentationsmentioning

confidence: 99%

“…For instance, in the case of compression, the specimens with diameter to length ratios (D/L) less than 2 were chosen by Rietsch et al [7], Guo et al [8] and Furmanski et al [9]. The specimens with moderate D/L ratios from 2 to 3 were tested by Lee et al [10], Segreti et al [11], Wang et al [12][13][14] and Matadi et al [15]. In contrast, Pessey et al [16].…”

Section: Introductionmentioning

confidence: 99%

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Specimen Geometry Effect on the Deformation Mechanisms of Polypropylene-Based Composites Under Impact Loading at Different Temperatures

Wang

Bahlouli

Boumbimba³

et al. 2016

J. dynamic behavior mater.

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Dynamic behaviors of polypropylene (PP), PPethylene propylene rubber (PP-EPR) and PP-nanoclay (PP-Nanocor) composites were studied by using split Hopkinson pressure bar at different temperatures and under different strain rates. Samples with two different geometries and with or without petroleum jelly lubricant were tested under identical testing conditions to compare the dynamic responses with underlying deformation mechanisms. For all the test temperatures and strain rates, the dynamic responses of neat PP and PP-Nanocor showed post-yield strain-softening, whereas those of PP-EPR showed strain-hardening after the yield point. PP-Nanocor showed more strain-softening compared with neat PP at room temperature due to the more important localized shearing deformation at the nanofiller/matrix interfaces. Friction between the sample and the bars affected the dynamic response of the materials at room temperature as well as high temperatures seen as differences in behavior between the dynamic behaviors of the non-lubricated thin samples and the non-lubricated thick samples under the same testing conditions. At room temperature and without lubrication, the thicker specimens of neat PP and PPNanocor failed during dynamic testing due to the barrelinginduced crack that propagated in the specimen and led to the formation of a peripheral fragment. Although petroleum jelly provided a satisfactory lubrication condition for both neat PP and PP-based composites at room temperature and at high temperatures, by reducing the friction effect on the yield behavior, the lubrication did not have a significant effect on the post-yield behavior of neat PP and PPNanocor, particularly for the room temperature testing and with the thick specimens.

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Section: Resultsmentioning

confidence: 96%

Section: Materials and Experimentationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Specimen Geometry Effect on the Deformation Mechanisms of Polypropylene-Based Composites Under Impact Loading at Different Temperatures

Wang

Bahlouli

Boumbimba³

et al. 2016

J. dynamic behavior mater.

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“…The dispersion of the organoclay in PP matrix was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) in our previous studies [1]. The results show an exfoliated structure for PP Nanocor with 0.5 wt% organoclay and a partially exfoliated morphology for the organoclay content above 0.5 wt%.…”

Section: Materials and Sample Preparationmentioning

confidence: 91%

Dynamic mechanical characterization and modelling of polypropylene based organoclay nanocomposite

Wang

Boumbimba

Bahlouli

et al. 2015

EPJ Web of Conferences

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Abstract. In order to investigate the dynamic behaviour of polypropylene based organoclay nanocomposite, the polypropylene matrix and a master batch of polypropylene modified anhydrid maleic were mixed by means of melt mixing technique. The experimental characterization was performed by using split Hopkinson pressure bars (SHPB), at different strain rates and temperatures. A significant increase of the yield stress of nanocomposite was shown with the present of organoclay, comparing to neat PP. A three-phase approach based on the micromechanical formulation of the cooperative model is proposed to model the yield behaviour of the polymer nanocomposite. Our proposed approach accounts for strain rate and temperature effects as well as the organoclay exfoliation effect. The predictions of models for the nanocomposite yield behaviour showed a good agreement with experimental data.

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“…Addition of a low amount of clay leads to the enhancement of physical properties, such as high modulus [4, 5], high thermal stability [6–8], and good barrier properties against gas and moisture [9, 10]. The spatial distribution of nanoparticles [11, 12], the arrangements of intercalating polymer chains [13], and the interfacial interaction between the silicate layers and the polymer are the main factors contributing to the performance enhancement in nanocomposites [14, 15].…”

Section: Introductionmentioning

confidence: 99%

Effect of filler geometry on the diffusion and transport behavior of aromatic solvents and commercial oil through nitrile rubber nanocomposites

Thomas¹,

Jose²,

George³

et al. 2012

Polymer Composites

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The diffusion and transport behavior of nitrile rubber nanocomposites was studied with respect to different types of filler and also different types of solvents. The nitrile rubber nanocomposites showed considerable variations in the molecular transport owing to the tortuosity of path, decreased segmental mobility, and difference in particle geometry. As the matrix under consideration is polar, the behavior of the filled systems in aniline was also studied with a view to understand the polar–polar interaction between the filled matrix and the solvent. The oil repellency as a result of filler addition in the matrix was investigated by studying oil uptake of the nanocomposites. In all these investigations, it has been observed that the filler geometry played an important role in controlling the molecular transport through the polymer matrix. The layered silicate‐filled system showed better solvent resistance and hence minimum solvent uptake in polar and nonpolar solvents and better oil repellency followed by titanium dioxide and calcium phosphate filled systems. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers

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Dynamic Compressive Behavior of a Melt Mixed Polypropylene/Organoclay Nanocomposites

Cited by 25 publications

References 33 publications

Specimen Geometry Effect on the Deformation Mechanisms of Polypropylene-Based Composites Under Impact Loading at Different Temperatures

Specimen Geometry Effect on the Deformation Mechanisms of Polypropylene-Based Composites Under Impact Loading at Different Temperatures

Dynamic mechanical characterization and modelling of polypropylene based organoclay nanocomposite

Effect of filler geometry on the diffusion and transport behavior of aromatic solvents and commercial oil through nitrile rubber nanocomposites

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