Browsing by Author "Quijada Abarca, Juan"
Now showing items 1-20 of 33
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(SAGE, 2015)The addition of metal particles, for instance, silver or copper, into polymer matrices is a relevant strategy producing novel antimicrobial materials. By using two particles with diameters around 10nm and 45 mu m, and ...
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(Elsevier, 2017)In this study, polycaprolactam (PA6) nanocomposites with thermally reduced graphene oxide (TrGO) and carbon nanotubes (CNTs) were prepared by melt blending with the aim of obtaining films with improvements in permeability ...
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(WILEY-V C H VERLAG GMBH, 2008-11)The structure and properties have been comprehensively studied for metallocene copolymers of propylene-1-hexene (CiPH) and propylene-1-octadecene (CiPOD). The comonomer content constitutes the most important factor ...
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(Universidad de Chile, 2017)Se realizó la oxidación del grafito usando el método reportado por Hummers y Offeman. Este método permite incorporar diferentes grupos funcionales oxigenados al grafito. Posteriormente, se realizó la reducción térmica del ...
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(Universidad de Chile, 2018)La cantidad de alimentos que se pierden por factores asociados al envasado y la creciente industria frutícola en Chile, han motivado una creciente investigación en el área de envasado activo. Es por ello que, en la presente ...
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(Universidad de Chile, 2022)El PLA es un polímero con memoria de forma irreversible, al calentarlo sobre su temperatura de transición puede ser deformado, mantener esta forma al enfriarse y retornar a su forma original al ser expuesto al calor. Si ...
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(Universidad de Chile, 2011)En este trabajo se estudia el proceso de cementación de molibdeno sobre lámina de cinc en solución amoniacal, el cual involucra reacciones anódicas de oxidación de cinc y reacciones catódicas entre las que se incluyen la ...
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(Universidad de Chile, 2017)Nanopartículas de grafito oxidado y grafito oxidado térmicamente reducido a 600°C y a 800°C (GO, TrGO600° y TrGO800°, respectivamente), fueron sintetizadas a partir del método de Hummers-Offeman y, posteriormente, utilizadas ...
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(Sociedad Chilena de Quimica, 1999)
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(Sociedad Chilena de Quimica, 2000)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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(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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(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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(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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(JOHN WILEY, 2006-04-15)The relationships between the structure and properties have been established for copolymers of propylene and 1-hexene synthesized with an isotactic metallocene catalyst system. The most important factor affecting the ...
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(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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(Universidad de Chile, 2022)Las emisiones de Gases de Efecto Invernadero a nivel mundial son los responsables del calentamiento global. El uso de energías renovables pueden reducir el uso de los combustibles fósiles, encargados de la producción del ...
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(Elsevier, 2012)In this contribution the synthesis and polymerization activity of the nickel complexes [NiBr2{N0-(2,6- diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)ethyl]-N-(2,3,4,5,6-pentafluorophenyl)acetam idine}] (2), ...
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(Universidad de Chile, 2017)El avance tecnológico y científico ha promovido la fabricación de materiales inteligentes , capaces de recibir información de su entorno, interpretarla y, así, cambiar sus funcionalidades de acuerdo a su propósito ...
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(Elsevier, 2015)The use of graphite and polyolefins as starting materials to prepare nanocomposites is convenient because both are inexpensive and have very different properties, one is conductive and the other is insulating. The formation ...
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(Elsevier, 2013)This study investigates the synthesis, characterization and properties of isotactic polypropylene/graphene nanosheet nanocomposites (iPP/GNS). These nanocomposites were prepared by in situ polymerization using the ...
