Polyamide 6/clay nanocomposites using a cointercalation organophilic clay via melt compounding

Liu, Xiaohui; Wu, Qiuju; Berglund, Lars A.; Lindberg, Henrik; Fan, Jiaqi; Zhang, Qi

doi:10.1002/app.12031

Cited by 52 publications

(41 citation statements)

References 41 publications

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“…However, the amount of reduction is negligible due to the toughening effect of nano-CaCO 3 . The incorporation of nanoclay in polymers often declines the impact strength.…”

Section: Effect Of Nanoclay Contentmentioning

confidence: 94%

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, the amount of reduction is negligible due to the toughening effect of nano-CaCO 3 . The incorporation of nanoclay in polymers often declines the impact strength.…”

Section: Effect Of Nanoclay Contentmentioning

confidence: 94%

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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“…The same results were also reported earlier for PA 6/clay nanocomposites. 56,57 The HDTs of the PAs and PA nanocomposites could be related to their moduli. To make our discussion simple, we imagine them as real elastic materials.…”

Section: Semmentioning

confidence: 99%

Crystal structures and their effects on the properties of polyamide 12/clay and polyamide 6–polyamide 66/clay nanocomposites

Zhang

Yang

Ellis

et al. 2006

J of Applied Polymer Sci

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Both polyamide 12 (PA 12)/clay and polyamide 6 -polyamide 66 copolymer (PA 6/6,6)/clay nanocomposites were prepared by melt intercalation. The incorporation of 4 -5 wt % modified clay largely increased the strength, modulus, heat distortion temperature (HDT), and permeation resistance to methanol of the polyamides but decreased the notched impact strength. Incorporation of the clay decreased the melt viscosities of both the PA 12 and PA 6/6,6 nanocomposites. Incorporation of the clay increased the crystallinity of PA 6/6,6 but had little effect on that of PA 12, which explained why the clay obviously increased the glass-transition temperature of PA 6/6,6 but hardly had any effect on that of PA 12. The dispersion and orientation of both the clay and the polyamide crystals were studied with transmission electron microscopy, scanning electronic microscopy, and X-ray diffraction. The clay was exfoliated into single layers in the nanocomposites, and the exfoliated clay layers had a preferred orientation parallel to the melt flow direction. Lamellar crystals but not spherulites were initiated on the exfoliated clay surfaces, which were much more compact and orderly than spherulites, and had the same orientation with that of the clay layers. The increase in the mechanical properties, HDT, and permeation resistance was attributed to the orientated exfoliated clay layers and the lamellar crystals.

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“…The detailed description of preparation, characterization, morphology and mechanical properties can be found in a previous paper. [12] Non-isothermal analyses were carried out using a Perkin Elmer DSC-7 differential scanning calorimeter. About 10 mg of sample were weighted very accurately in the aluminium DSC pan and placed in the DSC cell.…”

Section: Experimental Partmentioning

confidence: 99%

An Unusual Crystallization Behavior in Polyamide 6/Montmorillonite Nanocomposites

Liu

Berglund³

2001

Macromol. Rapid Commun.

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Polyamide 6/clay nanocomposites using a cointercalation organophilic clay via melt compounding

Cited by 52 publications

References 41 publications

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

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

Crystal structures and their effects on the properties of polyamide 12/clay and polyamide 6–polyamide 66/clay nanocomposites

An Unusual Crystallization Behavior in Polyamide 6/Montmorillonite Nanocomposites

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Polyamide 6/clay nanocomposites using a cointercalation organophilic clay via melt compounding

Cited by 52 publications

References 41 publications

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

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

Crystal structures and their effects on the properties of polyamide 12/clay and polyamide 6–polyamide 66/clay nanocomposites

An Unusual Crystallization Behavior in Polyamide 6/Montmorillonite Nanocomposites

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

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