Preparation and Properties Evaluation of Thermoplastic Modified Epoxy Nanocomposites

Bakar, M.; Białkowska, A.; Molenda, J.; Piasek, J.

doi:10.1080/00222348.2011.625906

Cited by 16 publications

(8 citation statements)

References 25 publications

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“…Moreover, one could conclude that, as N → ∞ the power-law regime of avalanche size distribution is expected to continue forever, then the corresponding return distribution appears to converge to the q-Gaussian for the entire region. Finally, it is worth to mention that the behavior observed and reported here for the zero dimensional prototype SOC model of Ehrenfest is by no means specific and limited to this model, but seems to appear as a rather common phenomenon for several SOC models [21].…”

Section: Distribution Of Fluctuation Length and Returnsmentioning

confidence: 56%

Analysis of self-organized criticality in Ehrenfest’s dog-flea model

Bakar

Tirnakli

2009

Phys. Rev. E

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The self-organized criticality in Ehrenfest's historical dog-flea model is analyzed by simulating the underlying stochastic process. The fluctuations around the thermal equilibrium in the model are treated as avalanches. We show that the distributions for the fluctuation length differences at subsequent time steps are in the shape of a q -Gaussian (the distribution which is obtained naturally in the context of nonextensive statistical mechanics) if one avoids the finite-size effects by increasing the system size. We provide clear numerical evidence that the relation between the exponent tau of avalanche size distribution obtained by maximum-likelihood estimation and the q value of appropriate q -Gaussian obeys the analytical result recently introduced by Caruso [Phys. Rev. E 75, 055101(R) (2007)]. This allows us to determine the value of q -parameter a priori from one of the well-known exponents of such dynamical systems.

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Section: Distribution Of Fluctuation Length and Returnsmentioning

confidence: 56%

Analysis of self-organized criticality in Ehrenfest’s dog-flea model

Bakar

Tirnakli

2009

Phys. Rev. E

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“…7 FT-IR spectrum of neat epoxy and HNP's/epoxy nanocomposites were showed. A characteristic peakat 3719 cm -1 is assigned to the hydroxyl groups, which suggested the interactionbetween modified HNP's and epoxy.It can be notedas the amount of HNP's was increased, the % transmittance of the hydroxyl groups increased [25].…”

Section: E Microstructural Analysis Of Nano Compositementioning

confidence: 95%

Mechanical Assisted Modification of Halloysite Nano Clay: Characterization and Its Effect on Mechanical Properties of Halloysite-Epoxy Nano Composites

Rudresh¹,

Maruthi²,

Nagaswarupa³

et al. 2019

AJEAT

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Modificationof Halloysite nano clay has been done using 3-aminopropyltriethoxysilane in the presence of distilled water as solvent media. Untreated and modified nano clay was characterized by Powder X-ray diffractometer (PXRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR). Functionalization of Halloysite nano clay is also strongly affected the morphological parameters and enabling the application in epoxy nano composite. However, the influence of modified clay concentration on the mechanical properties of epoxy/nanoclay composites, with different concentrations (2%, 3%, 4% and 5%) of nano clay in the epoxy resin was investigated. Experimental results showed that the mechanical properties of epoxy were improved upto 4 wt% of HNP’s, evidently because of the loading of modified clay. The tensile strength, tensile Modulus, flexural strength, flexural modulusand fracture toughness of the nanocomposites increased by 13%, 17%, 9%, 14%and 27% respectivelythis demonstrated that the composites were strengthened.

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“…Thermoplastics have been intensively studied for about four decades as toughening agents because they generally do not cause a significant reduction in the modulus, yield strength and glass transition temperature, as in the case of liquid rubbers. Various ductile thermoplastics were investigated as an alternative to reactive rubber for improving the mechanical properties of the epoxy resins [ 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 , 156 ]. When mixed with an engineering polymer, the epoxy matrix can form an interpenetrating network which would prevent the agglomeration of the nanoparticles and thus allow their unform dispersion in the blend.…”

Section: Hybrid Epoxy Nanocompositesmentioning

confidence: 99%

“…The results demonstrated the formation of hydrogen bonding between PMMA and the epoxy matrix, according to Scheme 7 . The improvement in the properties was explained by the specific interaction between the polymer modifier and the matrix but also with the uniformly dispersed and well-embedded nanoparticles in the polymer blend [ 138 ]. Rudresh et al [ 139 ] used the same blending procedure and obtained an improved tensile strength and Young’s modulus of hybrid epoxy nanocomposites containing 6 wt% PMMA and 4 wt% of modified halloysite nanoclay tubes (HNTs).…”

Section: Hybrid Epoxy Nanocompositesmentioning

confidence: 99%

Hybrid Epoxy Nanocomposites: Improvement in Mechanical Properties and Toughening Mechanisms—A Review

Białkowska¹,

Bakar²,

Kucharczyk

et al. 2023

Polymers

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This article presents a review on the recent advances in the field of ternary diglycidyl ether of bisphenol A epoxy nanocomposites containing nanoparticles and other modifiers. Particular attention is paid to their mechanical and thermal properties. The properties of epoxy resins were improved by incorporating various single toughening agents, in solid or liquid states. This latter process often resulted in the improvement in some properties at the expense of others. The use of two appropriate modifiers for the preparation of hybrid composites, possibly will show a synergistic effect on the performance properties of the composites. Due to the huge amount of modifiers that were used, the present paper will focus mainly on largely employed nanoclays with modifiers in a liquid and solid state. The former modifier contributes to an increase in the flexibility of the matrix, while the latter modifier is intended to improve other properties of the polymer depending on its structure. Various studies which were carried out on hybrid epoxy nanocomposites confirmed the occurrence of a synergistic effect within the tested performance properties of the epoxy matrix. Nevertheless, there are still ongoing research works using other nanoparticles and other modifiers aiming at enhancing the mechanical and thermal properties of epoxy resins. Despite numerous studies carried out so far to assess the fracture toughness of epoxy hybrid nanocomposites, some problems still remain unresolved. Many research groups are dealing with many aspects of the subject, namely the choice of modifiers and preparation methods, while taking into account the protection of the environment and the use of components from natural resources.

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Preparation and Properties Evaluation of Thermoplastic Modified Epoxy Nanocomposites

Cited by 16 publications

References 25 publications

Analysis of self-organized criticality in Ehrenfest’s dog-flea model

Analysis of self-organized criticality in Ehrenfest’s dog-flea model

Mechanical Assisted Modification of Halloysite Nano Clay: Characterization and Its Effect on Mechanical Properties of Halloysite-Epoxy Nano Composites

Hybrid Epoxy Nanocomposites: Improvement in Mechanical Properties and Toughening Mechanisms—A Review

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