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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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Book ChapterDOI

Influence of the Nanoclay Cloisite 20A Incorporation on Properties of Acrylonitrile Butadiene Styrene (ABS)

TL;DR: In this article, the influence of the nanoclay Cloisite 20A incorporation on mechanical properties of ABS (acrylonitrile butadiene styrene) was investigated.
OtherDOI

Study on a New Hydrogen Storage System – Performance, Permeation, and Filling/Refilling

TL;DR: In this paper , a new way for H 2 storage in vehicles, propelled either by reciprocating engines or by stacks of fuel cells, is presented, where H 2 is at high pressure within small spheres randomly packed in conventional vehicle's tanks.

Microinjection of polipropylene with nanoclays

A. C. Cunha, +1 more
TL;DR: In this paper, the dispersion of polymer-clay particles in polypropylene was characterized using optical microscopy in polarized light, X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) and the mechanical characterisation was performed using the tensile test.
Journal ArticleDOI

Interactions of PP-PET blends modified by montmorillonite with different polarities

TL;DR: In this paper , the effects of adding organic montmorillonite clays (MMT) with different polarities (one polar and one non-polar) in recycled poly (ethylene terephthalate) (PET) and polypropylene (PP) blends were described.
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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