Estimation of material and interfacial/interphase properties in clay/polymer nanocomposites by yield strength data

Zare, Yasser

doi:10.1016/j.clay.2015.07.021

Cited by 65 publications

(33 citation statements)

References 38 publications

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“…The similar relation between the interphase properties and the modulus is reported in previous studies. [40][41][42] This occurrence is logical, because a strong and large interphase between polymer matrix and nanoparticles plays a signifi cant reinforcing role in polymer nanocomposites. The mechanical properties of nanocomposites depend on the level of stress transfer between matrix and nanoparticles which is a function of interphase properties such as size, modulus, and strength.…”

Section: Resultsmentioning

confidence: 99%

A Two‐Step Method Based on Micromechanical Models to Predict the Young's Modulus of Polymer Nanocomposites

Zare

2016

Macro Materials & Eng

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displayed high shape recovery and good recovery speed and stress. [2] The high surface area of nanoparticles as well as the strong interfacial adhesion at nanoscale lead to formation of a different phase between polymer and filler parts as interphase. [3][4][5][6][7][8][9] The contribution of interphase to mechanical properties of nanocomposites is considerable, due to the high interfacial area at polymernanoparticles interfaces. [10][11][12][13][14][15][16][17][18][19][20] It was reported that the interphase volume fraction exceeds the nanoparticle volume fraction in some samples demonstrating that the mechanical properties are significantly improved by both nanoparticles and interphases. [21] Therefore, many researchers have studied the interphase properties and its contribution to the mechanical properties of polymer nanocomposites. [22,23] Joshi and Upadhyay [24] modeled a polymer/multi-walled carbon nanotube (MWCNT) nanocomposite by three phase representative volume element (RVE) including nanoparticles, interphase, and matrix.A two-step method is suggested to predict the Young's modulus of polymer nanocomposites assuming the interphase between polymer matrix and nanoparticles. At first, nanoparticles and their surrounding interphase are assumed as effective particles with core-shell structure and their modulus is predicted. At the next step, the effective particles are taken into account as a dispersed phase in polymer matrix and the modulus of composites is calculated. The predictions of the two-step method are compared with the experimental data in absence and presence of interphase and also, the influences of nanoparticles size as well as interphase thickness and modulus on the Young's modulus of nanocomposites are explored. The predictions of the suggested model show good agreement with the experimental data by proper ranges of interphase properties. Moreover, the interphase thickness and modulus straightly affect the modulus of nanocomposites. Also, smaller nanoparticles create a higher level of modulus for nanocomposites, due to the large surface area at interface and the strong interfacial interaction between polymer matrix and nanoparticles.

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Section: Resultsmentioning

confidence: 99%

A Two‐Step Method Based on Micromechanical Models to Predict the Young's Modulus of Polymer Nanocomposites

Zare

2016

Macro Materials & Eng

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“…In addition, when an interphase with high “E i ” is formed in polymer nanocomposites (E i > 15 GPa), the level of “

ϕ_{i}

”determines the value of modulus. On the other hand, low “E i ” produces a low modulus at different “

ϕ_{i}

.” The logical influences of “

ϕ_{i}

” and “E i ” on Young's modulus were mentioned in different articles by previous work . As a result, the developed model can be properly applied to predict the Young's modulus of nanocomposites.…”

Section: Resultsmentioning

confidence: 96%

“…The logical influences of "/ i " and "E i " on Young's modulus were mentioned in different articles by previous work. 24,42 As a result, the developed model can be properly applied to predict the Young's modulus of nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

Development of simplified Tandon‐Weng solutions of Mori‐Tanaka theory for Young's modulus of polymer nanocomposites considering the interphase

Zare

2016

J of Applied Polymer Sci

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The known Tandon-Weng model originated from Mori-Tanaka theory commonly underestimates the Young's modulus of polymer nanocomposites containing spherical nanofillers. This phenomenon is attributed to disregarding the nanoscale interfacial interaction between polymer and nanoparticles, which forms a different phase as interphase in polymer nanocomposites. In this paper, the simplified Tandon-Weng model is developed assuming interphase and the predictions of the developed model are compared with the experimental data. The calculations of the developed model completely agree with the experimental results at reasonable levels of interphase properties. Additionally, the effects of main material and interphase properties on the predictions of modulus are evaluated. The developed model predicts that a high-content, thick, and strong interphase creates a high modulus in polymer nanocomposites. These logical observations demonstrate the correctness of the developed model for Young's modulus of polymer nanocomposites.

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“…First, a lot of analysis models were proposed to predict the mechanical properties, such as Young's modulus [32][33][34][35][36][37][38][39][40][41], yield stress [42][43][44][45][46][47][48][49][50], fracture toughness [42,51,52] and other mechanical properties [53][54][55][56]. Also, many studies have been carried out to predict not only mechanical properties, but also electrical properties [57][58][59][60][61][62][63], like electrical conductivity [35,59,[64][65][66][67][68][69][70][71][72][73][74][75][76], and dielec...…”

Section: Continuum Approachmentioning

confidence: 99%

Recent Studies on the Multiscale Analysis of Polymer Nanocomposites

Chung

Cho

2019

Multiscale Sci. Eng.

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Ever since several formations of polymer-based nanocomposites were reported, research on their modeling, characterization, and computerized analysis methodology has been extensively investigated to become a major academic field of advanced material science and technology. This paper mainly summarizes the multiscale computational analysis methodology for polymer nanocomposites. We also introduce various computational modeling approaches to characterizing the physical behavior of polymer nanocomposites, which are the molecular dynamics approach, and the continuum approach. Based on the various computational analyses, we summarize how the material properties and phenomenological behaviors of polymer nanocomposites were analyzed.

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Estimation of material and interfacial/interphase properties in clay/polymer nanocomposites by yield strength data

Cited by 65 publications

References 38 publications

A Two‐Step Method Based on Micromechanical Models to Predict the Young's Modulus of Polymer Nanocomposites

A Two‐Step Method Based on Micromechanical Models to Predict the Young's Modulus of Polymer Nanocomposites

Development of simplified Tandon‐Weng solutions of Mori‐Tanaka theory for Young's modulus of polymer nanocomposites considering the interphase

Recent Studies on the Multiscale Analysis of Polymer Nanocomposites

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