Relevant bibliographies by topics / Partially Exfoliated Nanocomposite

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  3. Conference papers

Academic literature on the topic 'Partially Exfoliated Nanocomposite'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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Journal articles on the topic "Partially Exfoliated Nanocomposite"

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Ferreira, Rodholfo da Silva Barbosa, Caio Henrique do Ó. Pereira, Rene Anisio da Paz, Amanda Melissa Damião Leite, Edcleide Maria Araújo, and Hélio de Lucena Lira. "Influence of Processing Type in the Morphology of Membranes Obtained from PA6/MMT Nanocomposites." Advances in Materials Science and Engineering 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/659148.

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The nanocomposites have an extensive use in the current process of membrane preparation, taking into account their unique features as membranes. Thus, the study of nanocomposite processing to obtain membranes is highly important. In this work, Brazilian clay was used (Brasgel PA) for the preparation of polyamide/clay nanocomposite. The nanocomposites were produced in a high rotation homogenizer and in a twin screw extruder. From the nanocomposites and pure polymers processed in the two equipments, membranes were prepared by the immersion-precipitation method, using formic acid as solvent. By X
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Bashar, Mohammad, Pierre Mertiny, and Uttandaraman Sundararaj. "Effect of Nanocomposite Structures on Fracture Behavior of Epoxy-Clay Nanocomposites Prepared by Different Dispersion Methods." Journal of Nanomaterials 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/312813.

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The effects of organic modifier and processing method on morphology and mechanical properties of epoxy-clay nanocomposites were investigated. In this study, the preparation of nanocomposites by exfoliation-adsorption method involved an ultrasonic mixing procedure, and mechanical blending was used for in situ intercalative polymerization. The microstructure study revealed that the organoclay, which was ultrasonically mixed with the epoxy, partially exfoliated and intercalated. In contrast, organoclay remained in phase-separated and flocculated state after the mechanical blending process. Tensil
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Kojuch, Luana Rodrigues, Keila Machado Medeiros, Dayanne Diniz de Souza Morais, Edcleide Maria Araújo, and Hélio de Lucena Lira. "Study of Nanocomposites of Polyamide 6.6/National Bentonite Clay." Materials Science Forum 727-728 (August 2012): 894–98. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.894.

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Polymers nanocomposites are a class of materials where inorganic substances with nanometrics dimensions are modified and used as dispersed loads in polymers matrices. In this work, polyamide 6.6 was chosen because of its excellent chemical, mechanical and thermal properties. The bentonite clay was treated with quaternary ammonium salt (Cetremide®) to make it organophilic and to improve the interaction with the polymer matrix. It was verified by the Torque Rheometry that the system with salt presented a bigger torque in relation to the torque of the system with untreated clay and pure polyamide
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Park, B. J., and Hyoung Jin Choi. "Effect of Surface Characteristics on Polystyrene/Clay Nanocomposite via Emulsion Polymerization." Solid State Phenomena 111 (April 2006): 187–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.111.187.

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Polystyrene/clay nanocomposite with organically modified montmorillonite was synthesized via emulsion polymerization. Organic styrene monomer was first intercalated into intergalley of the clay hosts, followed by a typical emulsion polymerization with surfactant and initiator. To investigate the effect of clay loading, we also prepared PS/clay nanocomposites with different clay contents. Wide angle X-ray diffraction (XRD) and transmission electron microscopy (TEM) showed that the emulsion polymerization of PS in the presence of clay produces partially exfoliated and intercalated nanocomposites
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Lim, Sang-Kyun, Eun-Hee Lee, and In-Joo Chin. "Specific interaction characteristics in organoclay nanocomposite of miscible poly(styrene-co-acrylonitrile) and poly(vinyl chloride) blend." Journal of Materials Research 23, no. 4 (2008): 1168–74. http://dx.doi.org/10.1557/jmr.2008.0148.

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We propose a new method for the preparation of the polymer/organoclay nanocomposite, termed the solution and melt mixing (SOAM) method, where the polymer and clays are first blended in solution, and subsequently the mixture is further blended in the melt. We prepared the ternary nanocomposite systems of poly(styrene-co-acrylonitrile) (SAN), poly(vinyl chloride) (PVC) and Cloisite25A clays (C25A) by solution blending as well as by the SOAM method. The C25A content in the nanocomposite was optimized by analyzing the x-ray diffraction (XRD) data of binary mixtures (SAN/C25A and PVC/C25A nanocompo
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Medeiros, Keila Machado, Taciana Regina de Gouveia Silva, Dayanne Diniz Souza Morais, Luana Rodrigues Kojuch, Edcleide Maria Araújo, and Hélio Lucena Lira. "Study of Morphology Membrane of Polymeric Nanocomposites Obtained by Phases Inversion." Materials Science Forum 775-776 (January 2014): 498–503. http://dx.doi.org/10.4028/www.scientific.net/msf.775-776.498.

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In this work, were obtained nanocomposite membranes polyamide66/Paraíba bentonite clay, treated with a quaternary ammonium salt in order to make it organophilic. The membranes were prepared as thin films using the technique of phase inversion from the nanocomposites obtained by solution. The membranes were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetry (TG) and scanning electron microscopy (SEM). By means of X-ray diffractogram, it was revealed that the membranes remained organically treated clay presented exfoliated and/or partially exfoli
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Nóbrega Medeiros, Vanessa, Thamyres Cardoso de Carvalho, Amanda Melissa Damião Leite, Edcleide Maria Araújo, Renê Anísio da Paz, and Hélio Lucena Lira. "Influence of Content and Treatment of Clay in the Morphology of PES Membranes." Materials Science Forum 869 (August 2016): 824–29. http://dx.doi.org/10.4028/www.scientific.net/msf.869.824.

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Polymeric membranes were produced from the nanocomposites of polyethersulfone and clay (untreated-MMT and treatment-OMMT), by phase inversion technique, in the proportions of 3 and 5% w/w, using as the solvent N, N dimethylformamide (DMF). From XRD results it was noted a change in the structure of the MMT by organophilization process with increase of the interplanar basal distance. To the membranes it was observed an exfoliated and/or partially exfoliated structure. From SEM images the nanocomposite membranes showed a surface apparently exempt of pores, however in the cross-section images show
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Nóbrega Medeiros, Vanessa, A. M. D. Leite, R. A. Paz, L. F. Maia, E. M. Araújo, and L. A. Pessan. "Morphological Comparison of PEI and PES Nanocomposite Membranes with Bentonite Clay." Materials Science Forum 775-776 (January 2014): 487–92. http://dx.doi.org/10.4028/www.scientific.net/msf.775-776.487.

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Obtaining membranes from polymer nanocomposites have attracted interest of researchers because they use low levels of charge for improvement in barrier properties. In this study, membranes from poly (imide ether) (PEI) and poly (sulfone ether) (PES) were produced by the solvent evaporation technique, using as solvent: chloroform to PEI and dimethylformamide (DMF) to PES; and the clay Brasgel PA was used as load. The results showed that, by XRD, PEI membranes have apparently a structure of micro-composites and / or interleaved structure. Those obtained with PES had an exfoliated structure and /
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Paramith, Tika, Johnner P Sitompul, and Hyung Woo Lee. "The effect of organobentonites from spent bleaching earth (SBE) and commercial bentonite on nanocomposite properties." International Journal of Engineering & Technology 7, no. 4 (2018): 2000. http://dx.doi.org/10.14419/ijet.v7i4.15317.

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This paper concerns on synthesis of nanocomposites consisting of Poly(lactic acid) (PLA) and clays. Two types of clays were regenerated organobentonite and commercial organobentonite. PLA and clays were melt extruded using single-screw extruder. The extruded compound was pelletized, then hot pressed using compression molding machine. Regenerated organobentonite was obtained from regeneration of spent bleaching earth (SBE) using solvent extraction and oxidation method. Afterwards, regenerated SBE modified by organic compound. While, commercial organobentonite was directly modified of commercial
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Cobos, Mónica, Iker De-La-Pinta, Guillermo Quindós, María Jesús Fernández, and María Dolores Fernández. "Synthesis, Physical, Mechanical and Antibacterial Properties of Nanocomposites Based on Poly(vinyl alcohol)/Graphene Oxide–Silver Nanoparticles." Polymers 12, no. 3 (2020): 723. http://dx.doi.org/10.3390/polym12030723.

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The design of new materials with antimicrobial properties has emerged in response to the need for preventing and controlling the growth of pathogenic microorganisms without the use of antibiotics. In this study, partially reduced graphene oxide decorated with silver nanoparticles (GO–AgNPs) was incorporated as a reinforcing filler with antibacterial properties to poly(vinyl alcohol) (PVA) for preparation of poly(vinyl alcohol)/graphene oxide-silver nanoparticles nanocomposites (PVA/GO–AgNPs). AgNPs, spherical in shape and with an average size of 3.1 nm, were uniformly anchored on the partially
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Dissertations / Theses on the topic "Partially Exfoliated Nanocomposite"

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Djadoun, A., K. Ouaad, and S. Djadoun. "Nanocomposites Based on an Algerian Bentonite and Poly(Methyl Methacrylate-CO-4-Vinilpyridine) Initiated by Ni(II) -Benzoinoxime Complex." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35103.

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Poly(methyl methacrylate-co-4-vinylpyridine) containing various 4-vinylpyridine contents (PMM4VP) were synthesized in dioxan at room temperature using a neutral Ni(II)α-benzoinoxime complex as a single component initiator and used to elaborate via solution intercalation method nanocomposites based on an organically modified bentonite from Maghnia Algeria (OBT). Mixed exfoliated and intercalated PMM4VP/OBT nanocomposites were elaborated as confirmed by XRay Diffraction (XRD) and Transmission Electron Microscopy (TEM) investigations. The degree of exfoliation of these nanocomposites depend
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Djadoun, S., and S. Kadi. "Elaboration of Nanocomposites Based on Poly (Ethyl Methacrylate-co-Acrylonitrile) by in Situ Polymerization Using an Algerian Bentonite. Thermal Stability and Kinetic Study." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35084.

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This contribution focuses on the synthesis and characterization of nanocomposites based on poly (ethyl methacrylate-co-acrylonitrile) (PEMAN) and different loadings of an organically modified bentonite from Algeria prepared via in situ polymerization. TEM images and X-ray patterns revealed that depending on the loading of this clay, intercalated or partially exfoliated nanocomposites were obtained. These nanocomposites showed an increase in their glass transition temperature compared to the pure copolymer as investigated by Differential Scanning Calorimetry and improved thermal stability
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Conference papers on the topic "Partially Exfoliated Nanocomposite"

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Reynaud, Emmanuelle, Daniel Schmidt, Gowri Dorairaju, Saurabh Toshniwal, and Kunal Tulsyan. "Isolating the Role of Nanofillers: A Study on Amorphous Polyamide Nanocomposites." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67373.

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We report the production of transparent, amorphous, partially exfoliated polyamide / nanoclay nanocomposites. Stiffness and yield strength increase with nanoclay content, while work-of-fracture remains constant below an inorganic content of 0.25 vol%.
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Journal articles
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