Browsing by Author "201-0010750"
Now showing items 1-20 of 49
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Abugoch James, Lilian; Tapia, Cristián; Villamán, María C.; Yazdani-Pedram Zobeiri, Mehrdad; Díaz Dosque, Mario (Elsevier, 2011)Quinoa protein/chitosan films were obtained by solution casting of blends of quinoa protein extract (PE) and chitosan (CH). Films from a PE/CH blend were characterized by FTIR, X-ray diffraction, thermal analysis, and ...
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Retuert de la Torre, Pedro Jaime; Yazdani-Pedram Zobeiri, Mehrdad (SPRINGER VERLAG, 1993-11)Methyl methacrylate and methyl acrylate were grafted onto chitosan by using potassium persulfate alone as redox initiator and in combination with MnCl2 and CuCl2, as inorganic, and both ammonium tartrate and oxalate as ...
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Tapia Villanueva, Cristián; Escobar, Z.; Costa, Edda; Sapag Hagar, Jaime; Valenzuela Lozano, Fernando; Basualto Flores, Carlos; Gai, María Nella; Yazdani-Pedram Zobeiri, Mehrdad (ELSEVIER SCIENCE BV, 2004-01)The aim of this work was to evaluate the possibility of using mixtures and/or polyelectrolyte complexes from both chitosan-alginate and chitosan-carrageenan as prolonged drug release systems. Different dissolution profiles ...
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Yazdani-Pedram Zobeiri, Mehrdad; Vega, H.; Retuert de la Torre, Pedro Jaime; Quijada Abarca, Juan (SOC PLASTICS ENG INC, 2003-04)New types of compatibilizers based on functionalized polypropylene (PP) were synthesized by radical melt grafting either with monomethyl itaconate or dimethyl itaconate. The effect of these new modified PP compounds were ...
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Arada Pérez, María de los Angeles; Yardani Pedram, Mehrdad (Asociación de Químicos e Ingenieros del Instituto Químico de Sarría, 2003)The statistical evaluation of seven ion selective chemical sensors (ISE) for nitrate ion determination, based on polymeric membranes on a conductive support, has been carried out in this work. This was donw in order to ...
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Lazo, A. R.; Bustamante, M.; Arada, M. A.; Jiménez, J.; Yazdani-Pedram Zobeiri, Mehrdad (ASOC QUIMICOS, INST QUIMICO SARRIA, 2005-11)Lead(II) ion selective electrode, ISE, based on plasticized PVC membranes with 1-furoyl 3,3 diethyl thiourea as ionophore and tributylphosphate as plasticizer have been developed. The membrane was applied on a conducting ...
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Arada, M. A.; Cortés Nodarse, I.; Yazdani-Pedram Zobeiri, Mehrdad (SOCIEDAD CHILENA DE QUIMICA, 2004-03)A potentiometric all-solid-state type ion-selective electrode (ISE) for NO3- was constructed and characterized. It is based on a mixture of tetra-decyl-ammonium nitrate (TDAN) as ionophore, di-butyl phthalate (DBP) as ...
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Deposition of carbon nanotubes onto aramid fibers using as-received and chemically modified fibers Rodríguez Uicab, O.; Aviles, F.; González-Chi, P. I.; Canche Escamilla, G.; Duarte Aranda, S.; Yazdani-Pedram Zobeiri, Mehrdad; Toro, P.; Gamboa, F.; Mazo, M. A.; Nistal, A.; Rubio, J. (Elsevier, 2016)Multiwall carbon nanotubes (MWCNTs) oxidized by an acid treatment were deposited on the surface of as-received commercial aramid fibers containing a surface coating ("sizing"), and fibers modified by either a chlorosulfonic ...
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Arada Pérez, María de los Angeles; Yazdani-Pedram Zobeiri, Mehrdad; Cortés Nodarse, I.; Lazo, A. R.; Serrano M., M. (Ministerio de Educación Superior, 2003)Nitrate concentration in drinking water was directly determined by employing an ion selective liquid membrane electrode (ISE). This was constructed with poly(vynil chloride) as matrix on a solid conducting support. ...
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López Manchado, Miguel; Kenny, J. M.; Quijada Abarca, Juan; Yazdani-Pedram Zobeiri, Mehrdad (WILEY-V C H VERLAG GMBH, 2001-07-06)
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López Manchado, Miguel; Yazdani-Pedram Zobeiri, Mehrdad; Retuert de la Torre, Pedro Jaime; Quijada Abarca, Juan (JOHN WILEY & SONS INC, 2003-08-22)To improve the compatibility and properties of blends based on high-density polyethylene (HDPE) and the ethylene-propylene copolymer (EPR), the functionalization of both through grafting with an itaconic acid derivative, ...
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Arada Pérez, María de los Angeles; Cortés Nodarse, I.; Yazdani-Pedram Zobeiri, Mehrdad; Pérez Saavedra, J. J. (Ministerio de Educación Superior, 2003)Seven types of chemical sensors based on polymeric liquid membranes for determination of nitrate ion have been prepared by using 3-nitro-o-xylene (NOX), tri-butyphosphate (TBP), bis-(2-ethylhexyl)sebacate (DOS), ...
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Aguilar Bolados, Héctor; López Manchado, Miguel; Brasero, Justo; Aviles, F.; Yazdani-Pedram Zobeiri, Mehrdad (Elsevier, 2016)Graphene materials often are obtained through thermal reduction of graphite oxide. This is due to the fact that other synthesis methods are more difficult and generally render lower yield. The structure and morphology of ...
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Toro, P.; Quijada Abarca, Juan; Yazdani-Pedram Zobeiri, Mehrdad; Arias, José Luis (ELSEVIER SCIENCE BV, 2007-09)Chicken eggshell (ES) is an industrial byproduct containing 95% calcium carbonate, and its disposal constitutes a serious environmental hazard. Different proportions of chicken eggshell as bio-filler for polypropylene (PP) ...
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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 ...