Effect of nano-CaCO3 on rheological and dynamic mechanical properties of polypropylene: Experiments and models

Karamipour, Shahnaz; Ebadi‐Dehaghani, Hassan; Ashouri, Davoud; Mousavian, Saman

doi:10.1016/j.polymertesting.2010.10.009

Cited by 72 publications

(59 citation statements)

References 34 publications

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“…In particular, PP is extensively utilized not only for its balanced thermal and mechanical properties, but also due to its environmental friendliness and easy processability at a relatively low cost (Karger-Kocsis, 1999). PP has also been widely used in association with various types of nanofillers, such as carbon nanotubes and nanofibre (Ma et al, 2010;Wu et al, 2011;Rex J. Kuriger 2002), layered silicates (Ardanuy and Velasco, 2011;Olewnik et al, 2010;Perrinsarazin et al, 2005) and graphites (Kalaitzidou et al, 2007b;Kalaitzidou et al, 2007a;Li and Wu, 2012), nanoparticles such as silica (Pedrazzoli and Pegoretti, 2013;Sengupta et al, 2011) and calcium carbonate (Karamipour et al, 2011;Wang et al, 2010). An important role is played by such inorganic nanofillers, which can be usually dispersed at nanometric level without the addition of compatibilizers.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and rheological response of polypropylene/boehmite nanocomposites

Pedrazzoli

Tuba

Khumalo

et al. 2013

Journal of Reinforced Plastics and Composites

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In this work the influence of synthetic boehmite alumina (BA) nanoparticles with various surface treatments on the morphology, crystallization behavior and mechanical properties of polypropylene copolymer (PP) nanocomposites was studied. In particular, a series of PP/BA nanocomposites, containing up to 10 wt% of untreated and of octylsilane-functionalized BA nanoparticles, were prepared by melt compounding and film blowing. A third type of composites was produced by incorporation of BA nanoparticles treated with benzene-sulfonic-acid.Scanning electron microscopy indicated that BA nanoparticles were finely and uniformly dispersed, though agglomerated, in the PP nanocomposites. Surface treated BA nanoparticles were better dispersed in the matrix than the untreated BA nanocomposites. The melt viscosity of nanocomposites remained unaltered or decreased by nanofiller incorporation at low contents (2.5 and 5 wt%), while it slightly increased at higher contents (10 wt%).Uniaxial tensile tests indicated that the nanoparticles can induce a remarkable stiffening effect even at a rather low filler content, especially in the case of surface treated particles. The plane stress fracture toughness of the material, evaluated by the essential work of fracture approach, showed a noticeable improvement due to BA incorporation, with an optimal effect for a filler concentration of about 2.5 wt%.4

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Section: Introductionmentioning

confidence: 99%

Mechanical and rheological response of polypropylene/boehmite nanocomposites

Pedrazzoli

Tuba

Khumalo

et al. 2013

Journal of Reinforced Plastics and Composites

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“…The storage modulus predicted using Guth model equation (3) has better agreement with experimental value of PMMA-5 nanocomposite, while the Einstein [equation (2)] is deviated most. Karamipour et al 41 have obtained similar results for PP/CaCO 3 nanocomposites. The experimental and theoretical loss factor (tan δ) values of all the samples are presented in Fig.…”

Section: At Fixed Temperature (200°c)mentioning

confidence: 62%

Melt rheological behavior of PMMA nanocomposites reinforced with modified nanoclay

et al. 2016

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“…It was clear that adding of CaCO 3 nanoparticles enhanced the durability of stone toward artificial aging and improved resistance to RH/temperature compared to the samples treated with the acrylic polymer without CaCO 3 nanoparticles. This may be attributed to the role of nanoparticles in reinforcing the polymers, and also improving their interaction with the stone grains [54]. Note that the tests were carried out on untreated samples only before artificial aging, because after aging, no values could be reported because the material was too weak.…”

Section: Mechanical Properties Before and After Artificial Agingmentioning

confidence: 99%

Enhancing the Durability of Calcareous Stone Monuments of Ancient Egypt Using CaCO3 Nanoparticles

et al. 2017

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Abstract:The unwanted changes in valuable historic calcareous stone monuments due to exposure to many physical and chemical effects may lead to its deterioration. The growing interest in the field of conservation of stone monuments encourages the development of consolidation and water-repellent materials. The aim of this study is to evaluate the effectiveness of CaCO 3 nanoparticles as a consolidation and protection material for calcareous stone monuments, when those nanoparticles used are dispersed in acrylic copolymer; polyethylmethacrylate (EMA)/methylacrylate (MA) (70/30), respectively. Samples were subjected to artificial aging by relative humidity/temperature to show the optimum conditions of durability and the effectiveness of the nano-mixture in improving the physical and mechanical properties of the stone material. The synthesis process of CaCO 3 nanoparticles/polymer nanocomposite has been prepared by in situ emulsion polymerization system. The prepared nanocomposites with 0.15 g CaCO 3 nanoparticles showed obvious transparency features and represent nanocomposites coating technology with hydrophobic, consolidating and good protection properties. Some tests were performed in order to estimate the superficial consolidating and protective effect of the treatment. The obtained nanocomposites have been characterized by TEM, while the surface morphology before and after treatment and homogeneous distribution of used consolidation materials on stone surface were examined by SEM. Improvement of stone mechanical properties was evaluated by compressive strength tests. Change in water-interaction properties was evaluated by water absorption capillarity measurements, and colorimetric measurements were used to evaluate the optical appearance. Taken together, the results indicate that CaCO 3 /polymer nanocomposite is a completely compatible, efficient material for the consolidation of artistic and architectural limestone monuments capable of enhancing the durability of limestone toward artificial aging and improving the stone mechanical properties compared to the samples treated with pure acrylic copolymer without Calcium carbonate nanoparticles.

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Effect of nano-CaCO3 on rheological and dynamic mechanical properties of polypropylene: Experiments and models

Cited by 72 publications

References 34 publications

Mechanical and rheological response of polypropylene/boehmite nanocomposites

Mechanical and rheological response of polypropylene/boehmite nanocomposites

Melt rheological behavior of PMMA nanocomposites reinforced with modified nanoclay

Enhancing the Durability of Calcareous Stone Monuments of Ancient Egypt Using CaCO3 Nanoparticles

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