Micro- and nano-scale deformation behavior of nylon 66-based binary and ternary nanocomposites

Dasari, Aravind; Yu, Zhong‐Zhen; Yang, Mingshu; Zhang, Qingxin; Xie, Xiaolin; Mai, Yiu‐Wing

doi:10.1016/j.compscitech.2005.03.020

Cited by 103 publications

(76 citation statements)

References 66 publications

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“…On the one hand, silica nanoparticles with modification layer can effectively limit the movement of nylon 66 chains and hinder the diffusion process of polymer chain segments; on the other hand, it acts as a nucleating agent to increase the crystallization rate of matrix material. 20 The result of two effects acting simultaneously is, in this study, that the crystallinity of nylon 66/AMS and nylon 66/HMS nanocomposites does not show a distinct change compared with that of neat PA66. As for UMS, it can be seen from above analyses that its addition has a negative effect on the diffusion process and nucleation process of nylon 66, and so the crystallinity of nylon 66/UMS nanocomposite shows a decreasing trend.…”

Section: Characteristics Of Silica Isolated From Nylon 66/nano-sio 2 mentioning

confidence: 84%

The effect of the interface structure of different surface‐modified nano‐SiO₂ on the mechanical properties of nylon 66 composites

et al. 2007

J of Applied Polymer Sci

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The nylon 66-based nanocomposites containing two different surface-modified and unmodified SiO 2 nanoparticles were prepared by melt compounding. The interface structure formed in different composite system and their influences on material mechanical properties were investigated. The results indicated that the interfacial interactions differed between composite systems. The strong interfacial adhesion helped to increase tensile strength and elastic modulus of composites; whereas, the presence of modification layer in silica surface could enhance the toughness of composites, but the improvement of final material toughness was also correlated with the density of the adhered nylon 66 chains around silica nanoparticles. In addition, the results also indicated that the addition of surface-modified silica nanoparticles has a distinct influence on the nonisothermal crystallization behavior of the nylon 66 matrix when compared with the unmodified silica nanoparticle.

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Section: Characteristics Of Silica Isolated From Nylon 66/nano-sio 2 mentioning

confidence: 84%

The effect of the interface structure of different surface‐modified nano‐SiO₂ on the mechanical properties of nylon 66 composites

et al. 2007

J of Applied Polymer Sci

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“…The enhancement of modulus even at low content of nanoclay is very considerable. [24][25][26][27] The effect of nanoclay content on the tensile properties and impact strength of prepared ternary nanocomposite are presented in Figure 2. It is observed that the tensile modulus increases when nanoclay content increases.…”

Section: Effect Of Nanoclay Contentmentioning

confidence: 99%

Optimization of mechanical properties of PP/Nanoclay/CaCO₃ ternary nanocomposite using response surface methodology

Zare

Garmabi

Sharif

2011

J of Applied Polymer Sci

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Response surface method of experimental design was applied to optimize the mechanical properties of polypropylene (PP)/nanoclay/CaCO 3 hybrid ternary nanocomposite using three different levels of melt flow index (MFI) of PP, nanoclay, and CaCO 3 contents. The samples were prepared by melt mixing in a lab scale corotating twin screw extruder. The main effect of each parameter on the tensile modulus, tensile strength, and impact strength was extensively discussed. The structure of obtained nanocomposite was studied using X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy (SEM) techniques. Tensile modulus and impact resistance of prepared ternary nanocomposite were correlated to considered parameters using a second-order polynomial model. Also, the optimum values of studied variables were determined using contour plots. The obtained results show that increasing the nanoclay and CaCO 3 contents improve the tensile modulus up to 45%, whereas the optimum value of impact strength, about 54%, is achieved at low concentrations of nanoclay (2 wt %) and CaCO 3 (8 wt %).

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“…However, at high filler volume fractions, the possible agglomeration of smaller particles can lead to non-uniform distributions, and thereby, creating weak regions which cause a decrease in mechanical properties (Dasari et al 2006;Finnigan 2005).…”

Section: Introductionmentioning

confidence: 99%

Development of an image-based numerical model for predicting the microstructure–property relationship in alumina trihydrate (ATH) filled poly(methyl methacrylate) (PMMA)

2018

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Particulate composites are found in a wide range of applications. Their heterogeneous microstructure affects their bulk behavior and structural performance, however tools for predicting this important structure-property relationship are still lacking. In this study, a numerical method that can provide predictions of the mechanical response of a particulate polymeric matrix composite as a function of volume fraction and particle mean diameter is presented. The work is derived for an alumina trihydrate filled poly(methyl methacrylate) but the methodology is generic and can be used for any particulate composite. Representative Volume elements are determined through images obtained from scanning electron microscopy. The model takes into account the possibility of failure through interface debonding as well as cracks through the matrix. The model predictions for the modulus and fracture strength of the composites are validated through independent experiments on the composite. The numerical results are also used to qualitatively explain the trends measured regarding the fracture toughness of the composites. Compared to other literature on particulate composites, our study is the first to report accurate stress-strain distributions as well as fracture predictions whilst all the necessary model parameters defining the failure criteria are all derived through independent experiments. This paves R. Zhang · J. Y. S. Li-Mayer · M. N. Charalambides (B) Department of Mechanical Engineering, Imperial College London, South Kensington, London SW7 2AZ, UK e-mail: m.charalambides@imperial.ac.uk the way for a relatively simple methodology for determining structure-property relationships in composites design, enabling smarter material utilization and optimal mechanical properties.

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Micro- and nano-scale deformation behavior of nylon 66-based binary and ternary nanocomposites

Cited by 103 publications

References 66 publications

The effect of the interface structure of different surface‐modified nano‐SiO₂ on the mechanical properties of nylon 66 composites

The effect of the interface structure of different surface‐modified nano‐SiO₂ on the mechanical properties of nylon 66 composites

Optimization of mechanical properties of PP/Nanoclay/CaCO₃ ternary nanocomposite using response surface methodology

Development of an image-based numerical model for predicting the microstructure–property relationship in alumina trihydrate (ATH) filled poly(methyl methacrylate) (PMMA)

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Micro- and nano-scale deformation behavior of nylon 66-based binary and ternary nanocomposites

Cited by 103 publications

References 66 publications

The effect of the interface structure of different surface‐modified nano‐SiO2 on the mechanical properties of nylon 66 composites

The effect of the interface structure of different surface‐modified nano‐SiO2 on the mechanical properties of nylon 66 composites

Optimization of mechanical properties of PP/Nanoclay/CaCO3 ternary nanocomposite using response surface methodology

Development of an image-based numerical model for predicting the microstructure–property relationship in alumina trihydrate (ATH) filled poly(methyl methacrylate) (PMMA)

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The effect of the interface structure of different surface‐modified nano‐SiO₂ on the mechanical properties of nylon 66 composites

The effect of the interface structure of different surface‐modified nano‐SiO₂ on the mechanical properties of nylon 66 composites

Optimization of mechanical properties of PP/Nanoclay/CaCO₃ ternary nanocomposite using response surface methodology