Hybrid Nanocomposites: Processing and Properties

Shi, Yanchao; Kanny, Krishnan; Jawahar, P.

doi:10.1163/156855109x434757

Cited by 13 publications

(15 citation statements)

References 20 publications

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“…Each factor comprises either two or four levels within this DoEs table. The variation of factors and levels was set up according to previous research literature, including ESO content, clay type, clay content, curing agent type, mechanical mixing parameters, and ultrasonication parameters . The explicit DoE layout is demonstrated in Table for a total of 16 randomly selected experimental trials, which are very small in experimental number when compared with full factorial DoEs up to 4096 trials.…”

Section: Design Of Experiments (Does)mentioning

confidence: 99%

“…Notwithstanding the effect of material selection on biopolymer/clay nanocomposites, their mechanical properties can also be highly affected by the wettability of clay fillers within matrices . Among pre‐mixing processing techniques between fillers and polymer matrices, the combination of mechanical shear mixing, and sonication is commonly employed for the effective dispersion of clay fillers within polymer matrices .…”

Section: Introductionmentioning

confidence: 99%

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Optimization of material formulation and processing parameters in relation to mechanical properties of bioepoxy/clay nanocomposites using Taguchi design of experiments

Salam

Dong

Davies

et al. 2017

J of Applied Polymer Sci

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This article aims to study the effects of material formulation and processing parameters on mechanical properties of bioepoxy/clay nanocomposites based on epoxidized soybean oil (ESO) via Taguchi design of experiments (DoEs). A mixed-level DoE with an L 16 orthogonal array was constructed to achieve maximum levels of tensile strength, tensile modulus, and impact strength for corresponding bionanocomposites. Pareto analysis of variance (ANOVA) was used to identify significant factors and preferred formulations in the manufacture of bioepoxy/clay nanocomposites. The ESO content was found to have the most significant effect with regards to bionanocomposite mechanical properties with contribution percentages of 66.63, 72.96, and 40.14% for their tensile strength, tensile modulus, and impact strength, respectively. With regards to material processing parameters, mechanical mixing speed was identified as a critical factor to achieve optimal tensile and impact properties. Nonetheless, the results also indicated clay content to be a significant factor for tensile strength, whereas curing agent type was vital for the improvement of tensile modulus and impact strength. Clay type and sonication time were also found to be significant factors for impact strength. In contrast to this, manufacturing parameters such as mechanical mixing temperature, mixing time, and sonication frequency were considered to be non-significant factors due to their low cumulative contribution percentages of <10%. Finally, experimental confirmation tests based on the preferred combination of factors demonstrated good agreement with statistically predicted results.

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Section: Design Of Experiments (Does)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of material formulation and processing parameters in relation to mechanical properties of bioepoxy/clay nanocomposites using Taguchi design of experiments

Salam

Dong

Davies

et al. 2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…On the other hand, the investigation of biopolymer/clay nanocomposites was also undertaken to study the effect of clay fillers on tribological behaviour [41], thermal stability [43], biodegradability [46], flexural strength [48], impact strength [49], fracture toughness [32] and elongation at break [50] of bionanocomposites. In addition, the improvement of aforementioned properties of bionanocomposites was influenced by broadened clay interlayer spacing and improvement of clay wettability by means of the substitution of interlay cations of natural clay platelets [42,51,52]. On the other hand, Albayrak et al [43] reported that clay exfoliated structures were obtained with the addition of 1 and 2 wt% organomodified clays in acrylated epoxidised soy bean oil (AESO) based biopolymer.…”

Section: Introductionmentioning

confidence: 99%

“…Notwithstanding the effect of material combination in polymer/clay bionanocomposite systems, their mechanical properties can also be influenced by the wettability of clay fillers within matrices [52][53][54][55][56]. Amongst the pre-mixing processes for the fabrication of polymer/clay nanocomposites, the combination of mechanical shear mixing and sonication is commonly employed for the effective dispersion of clay fillers within polymer matrices [8,12,45,46,[57][58][59][60].…”

Section: Introductionmentioning

confidence: 99%

Identification of preferred combination of factors in manufacturing bioepoxy/clay nanocomposites

Salam

Dong

Davies

et al. 2018

Advanced Composite Materials

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The current study aims to identify the preferred combination of factors for manufacturing bioepoxy/clay nanocomposites based on epoxidised soybean oil (ESO), including material formulation and manufacturing parameters for maximising tensile strengths of nanocomposites according to Taguchi design of experiments (DoEs). A Taguchi mixed-level DoEs with an L16 orthogonal array was selected. The response was set to achieve the maximum tensile strengths of nanocomposites with a preferred combination of factors determined by the Pareto analysis of variance (ANOVA). The associated results revealed that the ESO content was found to be the most significant factor with a contribution percentage of 66.63% amongst nine factors investigated. This result was followed by two less significant factors, namely mechanical mixing speed and clay content with contribution percentages of 19.09 and 7.01%, respectively. However, other factors of clay type, curing agent type, mechanical mixing temperature and time, as well as sonication frequency and time, were categorised as non-significant factors from the manufacturing and economical point of view. A confirmation test was conducted based on the preferred combination of factors showing good agreement with statistically predicted results.

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“…It is important to study the cure kinetics and the correlation between the degree of cure and the thermal and mechanical properties to design the optimum curing conditions. [1][2][3][4][5][6][7] To provide organic-inorganic hybrid materials, we can mix the nanoscale particles with polymeric materials. [8] The hybrid materials are also known as nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

The effect of silica nanoparticles, thermal stability, and modeling of the curing kinetics of epoxy/silica nanocomposite

Arabli

Aghili

2014

Advanced Composite Materials

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A nanocomposite was synthesized using silica nanoparticles (SN) and Epoxy Vinyl Ester Resin (VE671). Nanoparticles were dispersed in the mixture by ultrasonic equipment to prevent the agglomeration. Transmission electron microscopy was used to investigate the dispersion of the SN in the mixture. Non-isothermal differential scanning calorimetry technique was used to study the cure kinetics of VE671 resin with and without adding SN. The activation energy (E a ) was determined using Kissinger and Ozawa equations. The E a values of curing for VE671/4 wt% SN system showed a decrease with respect to the neat resin. It means that there is a catalytic effect of SN in the cure reaction. The dynamic curing process was modeled to predict the degree of cure and cure rate of resin using the Sun method. In this method, the results showed a good agreement between the model and the experimental data for different heating rates. Thermal degradation of nanocomposite using thermogravimetric analysis technique was studied. The char yields increased with the addition of 4 wt% of SN to the epoxy resin and improved the polymer flame retardancy and thermal resistance at high temperatures.

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Hybrid Nanocomposites: Processing and Properties

Cited by 13 publications

References 20 publications

Optimization of material formulation and processing parameters in relation to mechanical properties of bioepoxy/clay nanocomposites using Taguchi design of experiments

Optimization of material formulation and processing parameters in relation to mechanical properties of bioepoxy/clay nanocomposites using Taguchi design of experiments

Identification of preferred combination of factors in manufacturing bioepoxy/clay nanocomposites

The effect of silica nanoparticles, thermal stability, and modeling of the curing kinetics of epoxy/silica nanocomposite

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