Browsing by Author "Urzúa Acevedo, Marcela"
Now showing items 1-9 of 9
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Bonardd, Sebastián; Saldías, César; Ramírez, Oscar; Radić, Deodato; Recio, Francisco J.; Urzúa Acevedo, Marcela; Leiva, Angel (Elsevier Ltd, 2019)A novel method to obtain catalytic bio-nanocomposites based on chitosan containing different amounts of gold nanoparticles generated in situ is reported. The formation of gold nanoparticles takes place in solid phase ...
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Ríos, Hernán E.; Fonseca, Carla K.; Brito, Cristián; Urzúa Acevedo, Marcela; Cabrera, Walton J. (2006)The surface properties of poly(mono-n-alkylmaleate-alt-N-vinyl-2- pyrrolidone) sodium salts derivatives with n=8, 10, 12, 16, and 18 carbon atoms in the side chain were analyzed. The surface tension behavior suggests that ...
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Toral Ponce, María; González Navarrete, Javier; Leiva, Angel; Ríos, Hernán E.; Urzúa Acevedo, Marcela (2009)The ability of solid N-alkyl quaternized poly(4-vinylpyridine) with hexyl, octyl and decyl bromide for the retention of chromate and dichromate forms of Cr(VI) in aqueous solutions is studied. The retention of Cr(VI) was ...
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Basha, Kottur Anver; Balakrishnan, Thavikkannu; Urzúa Acevedo, Marcela; Leiva, Angel; Alegria, Luz; Gargallo, Ligia; Radic, Deodato (2009)Phenoxyethyl methacrylate (POEMA) and butyl methacrylate (BMA) were copolymerized by free-radical copolymerization using ,'-azobisisobutyronitrile (AIBN) in 2-butanone solution at 3331K. Copolymers were characterized by ...
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Cabrera, Walton J.; Urzúa Acevedo, Marcela; Ríos Pella Lillo, Hernán Eugenio (Academic Press Inc., 2003)The effect of phenols containing different electron-withdrawing substituents on the potentiometric responses of several liquid PVC membranes containing the complex trioctylmethylammonium-nitrate, TOMA+NO3 -, is analyzed. ...
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Cabrera, Walton J.; Urzúa Acevedo, Marcela; Rios Peña Lillo, Hernán (2005)The influence of decyl alcohol on the potentiometric response of three para-alkylbenzenesulfonate (p-RBS) electrodes is analyzed. The results are clearly dependent on the membrane surface polarity due to the presence of ...
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Silva, Rubens A.; Urzúa Acevedo, Marcela; Petri, Denise F.S. (2009)The adsorption behavior of polycations at ionic strengths (I) ranging from 0.001 to 0.1 onto silicon wafers was studied by means of ellipsometry, contact angle measurements and atomic force microscopy (AFM). Polycations ...
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Calfumán, Karla; Honores, Jessica; Isaacs, Mauricio; Quezada, Diego; Valdebenito, Javier; Urzúa Acevedo, Marcela (Wiley-VCH Verlag, 2019)Atrazine is a pesticide used to control broadleaf weeds, however its wide distribution and its high persistence in the soil and in surface waters has resulted in a public and environmental health problem. Present results ...
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Ríos, Hernán E.; González Navarrete, Javier; Vargas, Víctor; Urzúa Acevedo, Marcela (Elsevier, 2011)Poly (N,N-dimethyl-N,N-diallyl ammonium) chloride, a highly hydrophilic polyelectrolyte, was hydrophobically modified and the surface properties of the resulting amphipathic polyelectrolytes were determined. The surface ...