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.read more
Citations
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Thermal stability of polypropylene–montmorillonite clay nanocomposites: Limitation of the thermogravimetric analysis
TL;DR: In this article, the influence of the presence of montmorillonite clay in the degradation of composites, showing the limitations of TGA and emphasizing the importance of complementary analyzes such as differential scanning calorimetry (DSC) and oxidation induction time (OIT).
Journal ArticleDOI
Bionanocomposites of chitosan/montmorillonite incorporated with Rosmarinus officinalis essential oil: Development and physical characterization
Victor Gomes Lauriano Souza,João Pires,Patrícia Freitas Rodrigues,Andreia A. S. Lopes,Francisco Manuel Braz Fernandes,Maria Paula Amaro de Castilho Duarte,Isabel M. Coelhoso,Ana Luisa Fernando +7 more
TL;DR: In this paper, the physical properties of bionanocomposites based on chitosan (Ch) reinforced with different commercial nanoclays and further incorporated with rosemary essential oil (REO) were evaluated through mechanical and X-ray diffraction analyses.
Journal ArticleDOI
Effect of reprocessing and clay concentration on the degradation of polypropylene/montmorillonite nanocomposites during twin screw extrusion
Josiane da R. Silvano,Sabrina A. Rodrigues,Juliano Marini,Rosario E. S. Bretas,Sebastião V. Canevarolo,Benjamim de Melo Carvalho,Luís Antonio Pinheiro +6 more
TL;DR: In this article, the degradation of polypropylene (PP) and montmorillonite (MMT) nanocomposites was evaluated in a twin screw extruder up to five times.
Journal ArticleDOI
Effects of the organic modification of different clay minerals and their application in biodegradable polymer nanocomposites of PHBV
TL;DR: In this paper, the interaction of different nanoparticles modified with 3-aminopropyl triethoxysilane (APTES) was studied and compared with the morphology and the final properties of the PHBV nanocomposites.
Journal ArticleDOI
Propriedades térmicas de compósitos de polipropileno e bentonita organofílica
TL;DR: Agarwal et al. as discussed by the authors found that the incorporation of an argila to o polipropileno (PP) melhorou a estabilidade termica do polimero nos compositos com 5% em massa de BENT and 3 e 5% in massa of BENT-org.
References
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Vapor barrier properties of polycaprolactone montmorillonite nanocomposites: effect of clay dispersion
Giuliana Gorrasi,Mariarosaria Tortora,Vittoria Vittoria,Eric Pollet,Bénédicte Lepoittevin,Michaël Alexandre,Philippe Dubois +6 more
TL;DR: In this paper, different compositions of poly(e-caprolactone) (PCL) and (organo-modified) montmorillonite were prepared by melt blending or catalyzed ring opening polymerization of e-CAPOLACTONE, using dibutyltin dimethoxide as an initiator/catalyst.
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Polypropylene–clay nanocomposites: effect of compatibilizing agents on clay dispersion
TL;DR: In this article, polypropylene-clay nanocomposites are obtained and studied by using two different coupling agents, diethyl maleate and maleic anhydride.
Journal ArticleDOI
Nanocomposites: a new class of flame retardants for polymers
TL;DR: In this paper, the current state of development of nanocomposites as a new class of flame retardants for polymers is reviewed, and the flame retardancy of layered silicate nanocomposition is based on char formation and its structure.
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Flammability of polyamide-6/clay hybrid nanocomposite textiles
TL;DR: The flammability of polyamide-6 (PA-6)/clay nanocomposites used as textile fabrics has been investigated in this paper, and it is shown that the heat release rate of PA-6nano evaluated with the cone calorimeter at 35 kW/m2 is reduced by 40% in comparison with pure polyamide6.
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Polypropylene/Clay nanocomposites: Effect of compatibilizer on the thermal, crystallization and dynamic mechanical behavior
TL;DR: In this paper, polypropylene (PP)/clay nanocomposites are prepared using different grades of PP, compatibilizers, and organically modified clays.