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.
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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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Exfoliation and dispersion enhancement in polypropylene nanocomposites by in‐situ melt phase ultrasonication
TL;DR: In this paper, a novel process using ultrasonics to enhance the exfoliation and dispersion of clay platelets in polypropylene-based nanocomposites has been proposed and investigated.
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Structure‐property relationships in polymer blend nanocomposites
Keun Yong Lee,Lloyd A. Goettler +1 more
TL;DR: In this paper, the tensile strength of TPV/clay nanocomposites was analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM).
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Biodegradable polyester layered silicate nanocomposites based on poly(epsilon-caprolactone)
Nadège Pantoustier,Bénédicte Lepoittevin,Michaël Alexandre,Dana Kubies,Cédric Calberg,Robert Jérôme,Philippe Dubois +6 more
TL;DR: In this article, the formation of PCL-based nanocomposites depended not only on the nature of the ammonium cation and related functionality but also on the selected synthetic route, melt intercalation vs. in situ intercalative polymerization.
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Crown ether-modified clays and their polystyrene nanocomposites
TL;DR: In this paper, crown ether-modified clays were obtained by the combination of sodium and potassium clays with crown ethers and cryptands, and polystyrene nanocomposites were prepared by bulk polymerization in the presence of these clays.
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A study on biodegradable aliphatic poly(tetramethylene succinate): the catalyst dependences of polyester syntheses and their thermal stabilities
TL;DR: In this article, a series of aliphatic PTMSs were synthesized through polycondensation of 1,4-butanediol and succinic acid in bulk with various amounts of titanium tetraisopropoxide (TTiPO) as the catalyst, and were further characterized by gel permeation chromatography, differential scanning calorimetry and thermogravimetric analysis.