Investigation of the Stiffness and Yield Behaviour of Melt-Intercalated Poly(methyl methacrylate)/Organoclay Nanocomposites: Characterisation and Modelling

Matadi, Rodrigue; Gueguen, Olivier; Ahzi, Saı̈d; Grácio, J.J.; Müller, René; Ruch, David

doi:10.1166/jnn.2010.1459

Cited by 17 publications

(10 citation statements)

References 10 publications

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“…The aim of this work is to study the compressive dynamic behaviour of DAPA and DAPAC with different filler contents. The mechanical behaviour at high strain rate was analysed and the compressive dynamic yield stress was then investigated and modelled with a cooperative model, to predict the corresponding mechanical evolution [25][26][27][28]. This work completes our previous studies on the elaboration, the structure, and the physico-chemical properties of DAPA and DAPAC as well as the modelling of the Young modulus and the Yield behaviour have been investigated [15][16].…”

Section: Introductionsupporting

confidence: 58%

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High strain rate behaviour of renewable biocomposites based on dimer fatty acid polyamides and cellulose fibres

Matadi

Hablot

Wang

et al. 2011

Composites Science and Technology

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Said Ahzi, et al.. High strain rate behaviour of renewable biocomposites based on dimer fatty acid polyamides and cellulose fibres.Abstract: Replacing petroleum-based raw materials with renewable resources is now a major concern in terms of economical and environmental viewpoints. New innovative and biosourced polyamides based on dimer fatty acid (DAPA), and its composites (DAPAC) with pure cellulose short fibres (CF) were elaborated. The understanding of the mechanical behaviour of these new biomaterials is essential to consider their future applications. The high strain rate behaviour of DAPA and DAPAC were studied using split Hopkinson pressure bars (SHPB). Dynamic test were made for different strain rate and various temperatures. The dynamic properties resultsshow an enhancement of the Young's modulus, the yield stress, and the flow stress with increasing CF content. It was also found that both systems, neat DAPA and DAPAC, are highly thermo-dependent and mechanically sensitive. The increase of strain rate leads to the increase of polymer flow, with a very significant increase of strain hardening, indicating that the addition of CF does not change the ability of DAPA to plastically deform. The addition of CF has no remarkable effect on the strain rate sensitivity. The results also shows that the effective activation energy increase slightly with the CF content. Besides, the effective activation volume decreases slightly with increasing CF concentration, indicating that the chains mobility are relatively reduced in presence of filler. A micromechanically-model known as cooperative model based on the assumption that the yield stress is a thermal activation processes and the yield stress obeys to the strain rate /temperature superposition principle, was used to predict the dynamic compressive yield stress of both DAPA and DAPAC. The prediction of the yield stress is in very good agreement with the experimental data.

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Section: Introductionsupporting

confidence: 58%

“…Following the recent works [16,[25][26][27][28], the temperature and strain rate dependence of yield behaviour of different polymers can be described and estimated by the cooperative model where the yield stress y σ is expressed below T g according eq. 1.…”

Section: Yield Stress Modellingmentioning

confidence: 99%

High strain rate behaviour of renewable biocomposites based on dimer fatty acid polyamides and cellulose fibres

Matadi

Hablot

Wang

et al. 2011

Composites Science and Technology

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“…Parameters for modeling of the elastic behavior 1,26,27 Pure PP PP with 3 wt% nanoclay PP with 6 wt% nanoclay stiffness. Hence, the curve for PP with the 3 wt% nanoclay and 5% porosity is higher than that of pure PP in this case.…”

Section: Effect Of Nanofillers Content and Porositymentioning

confidence: 99%

Modeling the mechanical response of polymers and nano‐filled polymers: Effects of porosity and fillers content

Alasfar

Ahzi

Wang

et al. 2020

J of Applied Polymer Sci

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In this study, models are developed to predict the mechanical behavior of porous polymer‐based membranes, since they are exposed to temperature and pressure load under service conditions. To the best of our knowledge, existing studies related to numerical simulations of mechanical behavior of polymer nanocomposites do not explicitly report porosity in the modeling. Hence, the proposed models attempt to explicitly examine the effect of porosity. The first model predicts the elastic modulus of porous polymer nanocomposites which is based on Weibull statistical analysis. The results show the combined effects of fillers content and porosity on the modulus. The second model predicts the yield stress for porous polymer nanocomposites. The coupled effects of fillers content and porosity on the yield stress is examined via our proposed extension of the cooperative model. A parametric study is conducted to show the influence of a single parameter used to model the influence of porosity.

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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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Investigation of the Stiffness and Yield Behaviour of Melt-Intercalated Poly(methyl methacrylate)/Organoclay Nanocomposites: Characterisation and Modelling

Cited by 17 publications

References 10 publications

High strain rate behaviour of renewable biocomposites based on dimer fatty acid polyamides and cellulose fibres

High strain rate behaviour of renewable biocomposites based on dimer fatty acid polyamides and cellulose fibres

Modeling the mechanical response of polymers and nano‐filled polymers: Effects of porosity and fillers content

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

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