Modeling Young’s modulus of rubber–clay nanocomposites using composite theories

Wu, Youping; Jia, Qiongqiong; Yu, Deng‐Guang; Zhang, Liqun

doi:10.1016/j.polymertesting.2004.05.004

Cited by 209 publications

(127 citation statements)

References 19 publications

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“…In the past, many theoretical and empirical models have been developed for polymer composite systems. [47][48][49][50][51][52] A comparison was made between the experimental data and the model predictions for the PVA/GO nanocomposites. Here, we employed the Halpin-Tsai equations, which are the most widely used model to estimate reinforcement effect of filler in composites, based on the assumption that the GO sheets were aligned parallel to the surface of the composite films.…”

Section: Results and Discussion Characterizationmentioning

confidence: 99%

Poly(vinyl alcohol)/graphene oxide nanocomposites prepared by a simple eco-process

Morimune

Nishino

Goto

2012

Polym J

141

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Graphene, a single layer of graphite, has recently attracted a large amount of attention because of its extremely high electronic and thermal properties, as many nanoscale materials are based on individual graphene. Graphene oxide (GO), which is the intermediate during the chemical processing of graphene, consists of graphene functionalized with oxygen-containing functional groups that imparts the desirable solution-processability to the neat graphene. Herein, poly(vinyl alcohol) (PVA), a hydrophilic polymer, was selected as the matrix, and PVA/GO nanocomposites were prepared by a simple and environment friendly process using water as the proceeding medium. In the PVA matrix, GO was exfoliated and nanodispersed. We found that the nanocomposites constructed by the incorporation of GO up to 1% by weight possess remarkable properties, such as significantly high mechanical and thermal properties. These excellent reinforcement effects were achieved not only by the rigid structure and high aspect ratio of the exfoliated GO but also by the strong interaction between PVA and GO. Furthermore, owing to the sheet-like structure of GO, the barrier properties of the nanocomposites were found to be dramatically increased.

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Section: Results and Discussion Characterizationmentioning

confidence: 99%

Poly(vinyl alcohol)/graphene oxide nanocomposites prepared by a simple eco-process

Morimune

Nishino

Goto

2012

Polym J

141

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“…Elastic modulus (E c ), maximum elongation (λ max ) and tensile strength (σ max ) of nanocomposites prepared from non-dialyzed (NR) and dialyzed natural rubber (DNR). Several theoretical models describing the mechanical behavior of filler-based nanocomposites have been presented in the literature [6,7,8,9,10,11]. The earliest theory was based on Einstein's hydrodynamic theory for viscosity of colloidal suspensions.…”

Section: Elastic Modulusmentioning

confidence: 99%

“…Improved mechanical properties such as tensile strength and elastic modulus of reinforced polymers depend on several factors: filler particle size and concentration, aspect ratio, dispersion and morphology (single versus aggregated particles or in the case of smectic clays, intercalated versus exfoliated) [6,7,8,9,10,11]. All these factors lead to the concept of filler-network formation and a percolation threshold.…”

Section: Introductionmentioning

confidence: 99%

Natural rubber-clay nanocomposites: Mechanical and structural properties

Rezende

Bragança

Doi

et al. 2010

Polymer

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The mechanical properties of non-vulcanized natural rubber and dialyzed natural rubber-clay nanocomposites have been studied by uniaxial deformations to evaluate the reinforcement efficiency of the clay. We show that while non-rubber molecules contribute to auto-reinforcement, removal of these molecules improves significantly the performance of clay as reinforcement agent. These mechanical properties are discussed in relation to morphological aspects of the clay characterized by TEM and SANS. The nanocomposites prepared by "latex-mixing" with aqueous dispersions of clay are found to contain completely exfoliated clay lamellae in coexistence with tactoids. Improved mechanical properties of the nanocomposites can be modeled by the high aspect ratio of exfoliated clay platelets coupled with immobilized rubber matrix. Interestingly, presence of tactoids does not appear to compromise the excellent reinforcement properties of the exfoliated platelets. At high deformations, strain-induced alignment of the clay exhibits anisotropic scattering, with anisotropy increasing with clay concentration and stretching.

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“…Subsequently, knowing the macro values of stress and strain tensor it is possible to compute approximated values at the micro level, in each phase. Micromechanical models have been applied in several studies to predict elastic properties of nanocomposites (Luo & Daniel, 2003;Wu et al 2004;Wilkinson et al, 2007;Chavarria & Paul, 2004) as well as damage and failure Chen et al, 2003;Chen et al, 2007;Boutaleb et al, 2009). Luo et al (Luo & Daniel, 2003) studied properties enhancement of epoxy matrix reinforced with silicate clay particles.…”

Section: Micro and Multiscale Modelingmentioning

confidence: 99%