Fracture behavior dependence on load-bearing capacity of filler in nano- and microcomposites of polypropylene containing calcium carbonate

Afshar, Amir; Massoumi, Iman; Khosh, Rasool Lesan; Bagheri, Reza

doi:10.1016/j.matdes.2009.07.054

Cited by 23 publications

(15 citation statements)

References 19 publications

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“…Also, about 13.5%, 6.1%, 42.5%, and 106.3% improvements in strength, modulus, displacement, and total fracture work was respectively obtained by unmodified nano‐CaCO 3 . Furthermore, nanosized CaCO 3 /polylactide nanocomposites showed improvement in strain‐at‐break over a pure polylactide system whereas, a study on fracture toughness and deformation mechanism of polypropylene/CaCO 3 composites showed that the addition of 15 wt % CaCO 3 NPs led to increase in the fracture toughness by 180% . Also, polypropylene/polyolefin elastomer (PP/POE)/nano‐CaCO 3 ternary composites showed significant increase in notched impact toughness over PP/POE blend and neat PP.…”

Section: Resultsmentioning

confidence: 97%

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Tiimob

Jeelani

Rangari

2015

J of Applied Polymer Sci

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ABSTRACT:The need for bio-based polymers as substitutes to recalcitrant petroleum sourced plastics is ever growing, because of increase in demand globally. Eggshell nanopowder (ENP) prepared using mechanical attrition and ultrasound irradiation was used to infuse a bio-based polymer [Super Sap 100/1000 epoxy (SSE)] for possible enhancement of its mechanical properties. The ENP, neat SSE and SSE/ENP composites were characterized using X-ray Diffraction, Transmission Electron Microscopy (TEM), Energy dispersive spectroscopy (EDS), Scanning Electron Microscopy, Thermogravimetic Analysis (TGA), Dynamic Mechanical Analysis (DMA), Thermomechanical Analysis (TMA) and flexure analysis. TEM and EDS analysis showed evidence of ENP in the SSE matrix whiles DMA and TMA analysis revealed significant improvements (7-22%) in the storage moduli and (3-17%) in coefficient of thermal expansion (CTE) respectively. Also, major delay in 5% decomposition temperatures and increases in char yields were observed in TGA analysis. The flexure strength, modulus, and toughness significantly improved by 6-31%, 11-37%, and 10-36%, respectively. Microstructure of fractured surfaces showed deflected crack paths which contributed to improve toughness. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43124.

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Section: Resultsmentioning

confidence: 97%

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Tiimob

Jeelani

Rangari

2015

J of Applied Polymer Sci

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“…[15] There are a number of recent studies on the effect of nanostructured inorganic materials, such as CaCO 3 , on the mechanical properties of PP, such as modulus, tensile strength, impact resistance, etc. [1,[16][17][18] but there are no studies known of the effect of this nanofiller addition on the TC of PP. In this study, the effect of nanostructured CaCO 3 addition on the TC of PP was investigated and compared with some modeled values.…”

Section: Introductionmentioning

confidence: 99%

Crystallization and Thermal Conductivity of CaCO₃ Nanoparticle Filled Polypropylene

Vakili

Ebadi‐Dehaghani

Haghshenasfard

2011

Journal of Macromolecular Science, Part B

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Isotactic polypropylene (IPP) and calcium carbonate (CaCO 3 ) nanocomposites were prepared by melt extrusion in a twinscrew extruder. The effect of CaCO 3 nanoparticles on the crystallization and thermal conductivity (TC) of PP was studied by thermal analysis (DSC) and thermal conductivity analysis (TCA). The introduction of CaCO 3 nanoparticles resulted in an increase in crystallinity. The incorporation of this nanoparticle (up to 15 phr) caused a significant increase of TC of PP, especially for larger fillercontent. Several models were used for prediction of TC of the nanocomposites. The experimental results had a good correlation with the Ce Wen Nan Model.

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“…In the case of untreated fillers, the higher number of agglomerates and larger nodule size contribute to lower the impact strength, particularly for high filler contents (10–20 wt%). These agglomerates tend to weaken the composites as observed in Fig. .…”

Section: Resultsmentioning

confidence: 87%

Phase structure and mechanical properties of PP/EPR/CaCO₃ nanocomposites: Effect of particle's size and treatment

Elloumi

Pimbert

Bradaï

2015

Polymer Engineering & Sci

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Calcium carbonate (CaCO 3 ) reinforced polypropylene/ ethylene propylene rubber (PP/EPR) copolymer composites for automotive use were developed by means of extrusion and injection molding process. Three kinds of CaCO 3 (stearic acid treated and untreated) nanoparticles and microparticles were used as fillers. The influence of stearic acid, particle size, and filler content on the state distribution and morphology were investigated by SEM and rheological measurements. Two different morphologies were observed: EPR and CaCO 3 dispersed in the PP matrix and a core shell structure, depending on the interactions between EPR and CaCO 3 . Toughening mechanisms and mechanical properties of the different systems were investigated. Significant improvement in tensile modulus is observed in all composites, depending on filler content. Elongation and notched impact strength were drastically decreased, especially for composites with nano CaCO 3 . Better impact properties were obtained with low content of treated particles, showing the importance of filler treatment.

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Fracture behavior dependence on load-bearing capacity of filler in nano- and microcomposites of polypropylene containing calcium carbonate

Cited by 23 publications

References 19 publications

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Crystallization and Thermal Conductivity of CaCO₃ Nanoparticle Filled Polypropylene

Phase structure and mechanical properties of PP/EPR/CaCO₃ nanocomposites: Effect of particle's size and treatment

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Fracture behavior dependence on load-bearing capacity of filler in nano- and microcomposites of polypropylene containing calcium carbonate

Cited by 23 publications

References 19 publications

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Crystallization and Thermal Conductivity of CaCO3 Nanoparticle Filled Polypropylene

Phase structure and mechanical properties of PP/EPR/CaCO3 nanocomposites: Effect of particle's size and treatment

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Crystallization and Thermal Conductivity of CaCO₃ Nanoparticle Filled Polypropylene

Phase structure and mechanical properties of PP/EPR/CaCO₃ nanocomposites: Effect of particle's size and treatment