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Propriedades mecânicas de nanocompósitos de polipropileno e montmorilonita organofílica

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TLDR
In this article, a mixture of polypropylene and commercial montmorillonite organophilic Cloisite 20A is used to construct a twoswrew extruder for melting.
Abstract
Nanocomposites of polypropylene and commercial montmorillonite organophilic Cloisite 20A containing 2.5%, 5%, 7.5% and 10% of clay with polypropylene-graft-maleic anhydride as coupling agent were prepared through the melt intercalation by twin-screw extruder. The materials were characterized by x-ray diffraction, tensile and impact properties according to ASTM D638 and D256 test methods, respectively. The x-ray diffraction results showed exfoliated or intercalated structures for different concentrations of the clay. The tensile modulus improved with the increase of the amount of the clay while the impact strength showed unsatisfactory results.

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Influence of Additives on Hybrids Membranes Morphology for Water Treatment

TL;DR: In this paper, polyamide 6 membranes (PA6) and hybrids with 1, 3 and 5% of montmorillonite clay (MMT) were obtained, adding potassium chloride (KCl) and calcium chloride (CaCl2).
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Influência das condições de mistura e dos teores de Acetato de Vinila e de argila nas propriedades de nanocompósitos de EVA/montmorilonita organofílica

TL;DR: In this paper, a factorial design was applied to assess the degree of clay exfoliation in a torque rheometer with rotors roller type, at 150°C for 10 minutes, monitoring the torque versus time, in order to investigate their influence on the characteristics of the nanocomposites.
References
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Journal ArticleDOI

Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials

TL;DR: In this article, a review of polymer-layered silicate nanocomposites is presented, where the polymer chains are sandwiched in between silicate layers and exfoliated layers are more or less uniformly dispersed in the polymer matrix.
Journal ArticleDOI

Polymer-layered silicate nanocomposites: an overview

TL;DR: An overview of polymer-clay hybrid nanocomposites is provided with emphasis placed on the use of alkylammonium exchanged smectite clays as the reinforcement phase in selected polymer matrices as discussed by the authors.
Journal ArticleDOI

An assessment of high voltage electron microscopy (HVEM). An invited review

TL;DR: High voltage electron microscopy (HVEM) has been extensively applied in the field of materials science as discussed by the authors, covering the study of heavy metals, ceramics and minerals, large-scale structures, dynamic processes and radiation damage.
Journal ArticleDOI

PP/clay nanocomposites prepared by grafting-melt intercalation

TL;DR: In this article, a polypropylene (PP)/clay nanocomposites (PPCN) were prepared via grafting-melt compounding by using a new kind of co-intercalation organophilic clay which had a larger interlayer spacing than the ordinarily organophilous clay only modified by alkyl ammonium.
Journal ArticleDOI

Rheology of polymer layered silicate nanocomposites

TL;DR: In this paper, the mesoscale structure and the strength of polymer-nanoparticle interactions have been investigated using viscoelastic measurements of layered silicate-based polymer nanocomposites.
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