Polypropylene/Clay Nanocomposites Produced by Shear Controlled Orientation in Injection Moulding: Deformation and Fracture Properties

Costantino, María Alejandra; Pettarín, Valeria; Viana, J. C.; Pontes, A. J.; Pouzada, A. S.; Frontini, Patricia María

doi:10.5545/sv-jme.2012.1002

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…12 Mechanical properties such as deformation and fracture showed that despite the fracture has started at practically the same loading level, the propagation energy varied with processing conditions and nanoclay content. 13 Thermal, morphological and thermo-mechanical properties were investigated, where it was observed that melting temperature (T m ) and crystallinity degree (X c ) were not affected while thermal stability increased. 14 Otherwise, Ataeefard and Moradian 15 observed improvement of mechanical properties, decreasing of crystallinity degree and the presence of intercalated/exfoliated structures in PP/organoclay nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite of polypropylene/octadecylamine lamellar-zirconium phosphate: Influence of nanofiller and screw speed

Mariano

Freitas

Mendes

2017

Journal of Composite Materials

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Nanocomposite based on polypropylene and octadecylamine-modified lamellar-zirconium phosphate (PP/nano-ZrPOct) was prepared by melt processing. The action of the nanofiller and screw speed on the properties were evaluated. SEM images revealed that at highest screw speed, the higher nano-ZrPOct dispersion was achieved. In WAXD diffractrograms, some nanofiller diffraction peaks disappeared and a new peak was observed at low angle. There was evidence of increase of thermal stability although only discrete increasing in initial degradation temperature has been noticed. Melting and crystallization temperatures were invariable but crystallinity degree was influenced with a decreasing behavior at highest screw speed. The results strongly evidenced that the intercalation of the PP chains inside the nano-ZrPOct galleries and some degree of delamination of the nanofiller platelets have been achieved.

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Section: Introductionmentioning

confidence: 99%

Nanocomposite of polypropylene/octadecylamine lamellar-zirconium phosphate: Influence of nanofiller and screw speed

Mariano

Freitas

Mendes

2017

Journal of Composite Materials

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“…The effect of the intercalation or exfoliation of the organoclays in the polymer extrusion process has been extensively studied [14][15][16]. The degree of intercalation and dispersion is affected by the organoclay chemistry [17] and the screw design [18,19] in the polymer extrusion process.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Intercalation and Dispersion of Organoclays on Energy Demand in the Extrusion of Recycled HDPE/PP Nanocomposites

Rigail-Cedeño

Vera-Sorroche²,

García-Mejía

et al. 2022

Energies

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Few studies have drawn on any systematic research into the energy demand to produce polymer-based nanocomposites. Regarding the problem, it is well-known that single screw extrusion is an energy-intensive process, so the incorporation of energy meters must be considered to examine the energy efficiency of the process. In this study, the effect of a nanoclay addition on the energy demand of the extrusion process was examined by extruding recycled high-density polyethylene (rHDPE) and recycled polypropylene (rPP) with a gradual compression screw with both dispersive and distributive mixers. The rHDPE/rPP was modified by adding commercial organoclay (OMMT) (3 wt%) and olefin block copolymer (OBC) (5 wt%) as compatibilizers. The energy consumption was measured on the total energy of the extruder machine. Mass throughput (MT) and specific energy consumption (SEC) were obtained at different screw speeds (10, 20, 30, 40, 50 RPM). The SEC of OMMT and OMMT/OBC nanocomposites was 25–50% lower than rHDPE/rPP, especially at higher throughputs. X-ray diffraction (XRD) and scanning electron microscope (SEM) illustrated the degree of intercalation and dispersion of the organoclay at different screw speeds. Better organoclay intercalation and dispersion were found at lower temperatures. Rheological curves showed a decrease in the viscosity at extrusion rates of nanocomposite mixtures. Melt temperature measured at die exit was reduced in the presence of organoclay over the screw speeds studied. This work suggests that the processing of rHDPE/rPP based nanocomposites can result in minor costs when processing conditions are carefully selected.

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Synergistic effects of nano-scale polybutadiene rubber powder (PBRP) and nanoclay on the structure, dynamic mechanical and thermal properties of polypropylene (PP)

Abadchi

Jalali‐Arani

2015

Iran Polym J

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Polypropylene/Clay Nanocomposites Produced by Shear Controlled Orientation in Injection Moulding: Deformation and Fracture Properties

Cited by 5 publications

References 32 publications

Nanocomposite of polypropylene/octadecylamine lamellar-zirconium phosphate: Influence of nanofiller and screw speed

Nanocomposite of polypropylene/octadecylamine lamellar-zirconium phosphate: Influence of nanofiller and screw speed

Effect of the Intercalation and Dispersion of Organoclays on Energy Demand in the Extrusion of Recycled HDPE/PP Nanocomposites

Synergistic effects of nano-scale polybutadiene rubber powder (PBRP) and nanoclay on the structure, dynamic mechanical and thermal properties of polypropylene (PP)

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