Thickness, modulus and strength of interphase in clay/polymer nanocomposites

Zare, Yasser; Garmabi, Hamid

doi:10.1016/j.clay.2014.12.016

Cited by 87 publications

(48 citation statements)

References 38 publications

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“…Many researchers have tried to prevent the aggregation/ agglomeration of nanoparticles which weakens the modulus by improving the compatibility between polymer matrix and nanoparticles through changing the surface chemistry of polymer or nanoparticles or applying a compatibilizer. [ 37,45,46 ] …”

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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“…Additionally, the values of "σ i " for the present samples (Table 1) were calculated by Eq. (15) at average α = 100, l = 500 nm and t i = 10 nm (Zare and Garmabi, 2015b). The "σ i " calculations exhibited in Table 1 changed from 56.96 to 642.24 MPa for samples.…”

Section: Calculation and Evaluation Of Interfacial/interphase Propertiesmentioning

confidence: 99%

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

Zare

2015

Applied Clay Science

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“…The theoretical investigations in the last years proposed a large amount of valuable information about interphase and interfacial interactions in polymer nanocomposites [20][21][22][23][24]. Recently, our group [25] has studied the properties of interphase in polymer/clay nanocomposites by simple models for mechanical…”

Section: Introductionmentioning

confidence: 99%

Thickness, modulus and strength of interphase in clay/polymer nanocomposites

Cited by 87 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

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

A simple technique for determination of interphase properties in polymer nanocomposites reinforced with spherical nanoparticles

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