Browsing by Author "201-0010750"
Now showing items 21-40 of 70
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Pacheco Bustamante, Pamela Francisca (Universidad de Chile, 2014)El grafito es el alótropo más estable del carbono. Su estructura está constituida por una gran cantidad de láminas de grafeno apiladas una sobre la otra a una determinada distancia a raíz de las fuerzas de Van der Waals. ...
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Fonseca París, Carla Karín (Universidad de ChileCyberDocs, 2009)Se estudió la extracción de cobre (II) y cinc (II) desde soluciones acuosas que simulan drenajes ácidos de mina y residuos industriales líquidos mediante el empleo de tres metodologías: Membranas Líquidas Emulsificadas, ...
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Pérez Bravo, Leonardo Andrés (Universidad de ChilePrograma Cybertesis, 2006)El objetivo de este estudio ha sido evaluar la evolución de las propiedades mecánicas y morfológicas de nanocompósitos a base de mezclas de polipropileno (PP) y un elastómero termoplástico, el copolímero estadístico de ...
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Arada Pérez, María de los Angeles; Yazdani-Pedram Zobeiri, Mehrdad; Cascaret C., A.; Ferrer S., A. (Ministerio de Educación Superior, 2003)An ion selective electrode for nitrate, composed of 2-[5-(4-nitrophenyl)furyl]-4,5-diphenyl imidazole as ionophore and dioctylphthalate (DOP) as plasticizers in poly[vynil chloride] (PVC) supported on a conducting resin, ...
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Aguilar Bolados, Héctor; Vargas Astudillo, Daniela Rocío; Yazdani-Pedram Zobeiri, Mehrdad; Acosta Villavicencio, Gabriela; Fuentealba, Pablo; Contreras Cid, Ahirton; Verdejo, Raquel; López Manchado, Miguel (American Chemical Society, 2017)A very simple method of reductive amination, based on the Leuckart reaction, is reported. This method enables not only the reduction of graphite oxide but also results in reduced graphene oxide functionalized with amine ...
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Yazdani-Pedram Zobeiri, Mehrdad; Calderón del Río, Katia Romina; Quijada Abarca, Juan (SOCIEDAD CHILENA DE QUIMICA, 2000-06)Polypropylene (PP) was functionalized in solution by grafting with monomethyl itaconate (MMI) by using xylene and decalin as solvents and 2,5-dimethyl-2,5-bis(tert-buthylperoxy)hexane (Lup. 101) as radical initiator. The ...
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Retuert de la Torre, Pedro Jaime; Martínez, Y.; Quijada Abarca, Juan; Yazdani-Pedram Zobeiri, Mehrdad (ELSEVIER SCIENCE BV, 2004-11-01)The formation of polymeric hybrid materials of siloxanes with gelatin (GE) starting from sodium metasilicate as the silica source, and their transformation into silica under different conditions have been studied. ...
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Martínez, Y.; Retuert de la Torre, Pedro Jaime; Yazdani-Pedram Zobeiri, Mehrdad; Colfen, H. (ELSEVIER SCI LTD, 2004-05-11)Homogeneous transparent hybrid films consisting of chitosan (CHI), poly(monomethyl itaconate) (PMMI) and silica were obtained indicating the absence of microphase separation. These ternary hybrid materials are very interesting ...
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Yazdani-Pedram Zobeiri, Mehrdad; Retuert de la Torre, Pedro Jaime; Quijada Abarca, Juan (WILEY-V C H VERLAG GMBH, 2000-06-20)A large number of carboxylic groups were introduced onto chitosan by grafting with poly(acrylic acid) as an efficient way of modification. The reactions were carried out in a homogeneous aqueous phase by using potassium ...
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González Chi, P. I.; Rodriguez Uicab, O.; Martin Barrera, C.; Uribe Calderon, J.; Canche Escamilla, G.; Yazdani-Pedram Zobeiri, Mehrdad; May Pat, A.; Aviles, F. (Elsevier, 2017)The microbond test was used to evaluate the interfacial shear strength (IFSS) of multiscale composites based on a polypropylene (PP) matrix reinforced with aramid fibers (AFs) chemically treated by two methods and coated ...
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Arada Pérez, María de los Angeles; Pérez Marín, Leonel; Calvo Quintana, Josefina; Yazdani-Pedram Zobeiri, Mehrdad (ELSEVIER SCIENCE SA, 2003-04-01)Seven types of ion-selective chemical sensors based on poly(vinyl chloride) (PVC) as polymeric membrane, for determination of nitrate ion, have been prepared by using 3-nitro-o-xylene (NOX), tributylphosphate (TBP), ...
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Toro, P.; Quijada Abarca, Juan; Peralta, Ronald; Yazdani-Pedram Zobeiri, Mehrdad (JOHN WILEY & SONS INC, 2007-02-15)The purpose of this work was to study how mineral fillers would behave in a polypropylene (PP) matrix when PP modified with maleic anhydride (MA) and/or itaconic acid (IA) was used as a coupling agent in the preparation ...
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Toro, P.; Quijada Abarca, Juan; Arias, José Luis; Yazdani-Pedram Zobeiri, Mehrdad (MACROMOLECULAR MATERIALS AND ENGINEERING 292(9): 1027-1034, 2007-09-14)Poly(propylene) (PP) composites were prepared by using eggshell (ES) as filler and their mechanical properties were compared with those using talc (TA) and calcium carbonate (CC) of different grain sizes (X-50). A decrease ...
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May-Pat, A.; Aviles, F.; Toro, P.; Yazdani-Pedram Zobeiri, Mehrdad; Cauich Rodríguez, Juan V. (BUDAPEST UNIV TECHNOL & ECON, DEPT POLYMER ENG, 2012-02)Multi-walled carbon nanotubes (MWCNTs) were oxidized by two different acid treatments and further functionalized with itaconic acid (IA). The functionalized MWCNTs were used to fabricate Poly(ethylene terephthalate) (PET) ...
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Bruna, J.; Yazdani-Pedram Zobeiri, Mehrdad; Quijada Abarca, Juan; Valentín, J. L.; López Manchado, Miguel (ELSEVIER SCI LTD, 2001-05)Polypropylene (pp) was functionalized in the melt phase by grafting with itaconic acid derivatives. 2,5-dimethyl-2,5-bis(tert-buthyl-peroxy) hexane (lupersol 101) was used as radical initiator. A Brabender Plasticorder was ...
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Bruna, J.; Yazdani-Pedram Zobeiri, Mehrdad; Quijada Abarca, Juan; Valentín, J. L.; López Manchado, Miguel (ELSEVIER SCIENCE BV, 2005-09)An ethylene-propylene copolymer (EPR) was functionalized in the melt by grafting with itaconic acid and its mono- and di-methyl esters by using dicumyl peroxide as radical initiator. Grafting reactions were carried out in ...
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Yazdani-Pedram Zobeiri, Mehrdad; Vega, H.; Quijada Abarca, Juan (WILEY-V C H VERLAG GMBH, 1998-11)Functionalization of isotactic poly(propylene) (PP) with dimethyl itaconate (DMI) as functional polar monomer using 2,5-dimethyl-2,5 -bis(tert-butylperoxy)hexane (L101) as radical initiator was carried out in both boiling ...
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González Alarcón, Darío Maximiliano (Universidad de Chile, 2015)Esta tesis está enfocada en la obtención de nanocompósitos basados en polipropileno (PP), utilizando nanoláminas de grafito (GNS) y nanopartículas de sílice como carga. Se incorpora GNS a matrices de distintos copolímeros ...
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Nucleation and selective growth of polymorphs of calcium carbonate on organic-inorganic hybrid films Martínez Rubí, Yadienka; Retuert de la Torre, Pedro Jaime; Yazdani-Pedram Zobeiri, Mehrdad; Barbosa, Miguel; Arias, José Luis (SOC CHILENA QUIMICA, 2008-03)Inorganic/organic ternary hybrid films that are constituted of gelatin (G), poly(monomethyl itaconate) (PMMI) and silica (SiO2), are used as a solid matrix to study the crystalization of calcium carbonate (CaCO3). These ...
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Soto Márquez, Pablo Ignacio (Universidad de Chile, 2015)La utilización de nanopartículas a base de grafito como refuerzo de matrices poliméricas permite la obtención de compósitos con propiedades físicas y mecánicas mejoradas en comparación con el material polimérico original. ...