RSS 1.0FRLP - I+D+i - CENTROS - CITEMA - TRABAJOS DE INVESTIGACIÓN
Material subido recientemente.
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Starch Polyvinyl Alcohol blends containing Polyurethane as plasticizer
(2016)Starch-based films containing 70wt% of starch and a combination of poly(vinyl alcohol) and a low glass transition temperature polyurethane as plasticizer were prepared. The effect of PVA/PU ratio content on the morphology ... -
Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
(2016)This study investigated the effect of dynamic crosslinking of polyamide 6,12 and random copolymers of ethylene and vinyl acetate blends (PA6,12/EVA) on the morphology, crystallinity, and dynamic mechanical properties. The ... -
Chitosan-graft-poly(n-butyl acrylate) copolymer Synthesis and characterization of a natural synthetic hybrid material
(2016)Two chitosan polymers with different deacetylation degree and molecular weight were subjected to graft- ing reactions with the aim to enhance the properties of these bio-based materials. Specifically, n-butyl acrylate in ... -
On the strategies for incorporating nanosilica aqueous dispersion in the synthesis of waterborne polyurethane silica nanocomposites, Effects on morphology and properties
(2016)In this work the synthesis of waterborne polyurethane/nanosilica nanocomposites by using two differ- ent strategies is presented, starting from a vinyl terminated polyurethane prepolymer (PUP) based on isophorone diisocyanate ... -
Morphology and properties of neutralized chitosan-cellulosenanocrystals biocomposite films
(2016)Chitosan/cellulose nanocrystals (CH-CN) films were obtained by casting of dispersions, and treated with NaOH for neutralization proposes. The composition of films was varied from 1 to 10 wt.% of CN. Changes in the morphology ... -
Synthesis, characterization and swelling behavior of new pH-sensitive hydrogels derived from copolymers of 2-hydroxyethyl methacrylate and 2-(diisopropylamino) ethylmethacrylate
(2012)The aim of this work was to synthesize and to characterize new pH-sensitive hydrogels that can be used in the controlled release of drugs, useful for dermal treatments or ophthalmology’s therapies. Copolymers containing ... -
Surface, thermal, and mechanical properties of composites and nanocomposites of polyurethane PTFE nanoparticles
(2014)Films from blends of polyurethane and nano-polytetrafluoroethylene aqueous dispersions (PU/nanoPTFE) were prepared, and the effect of the addition of different amounts of PTFE nanoparticles (50 nm) was studied. The changes ... -
Synthesis and swelling behavior of pH-responsive polyurethane poly(2-(diethylamino)ethyl methacrylate) hybrid materials
(2013)Polyurethane (PU)/poly[2-(diethylamino)ethyl methacrylate] hybrids, having a chemical bond between the PU and acrylic moieties and with different compositions, were prepared by the dispersion polymerization of 2-(diethyl ... -
The role of nanocrystalline cellulose on the microstructure of foamed castor-oil polyurethane nanocomposites
(2015)Nanocrystalline cellulose (CNC), obtained by sulphuric acid hydrolysis, was used to synthesize polyurethane foams (PUFs) based on a functionalized castor oil polyol and a Methylene diphenyl diiso- cyanate (MDI). Formulations ... -
Polyurethane Poly(2-(Diethyl Amino)Ethyl Methacrylate) blend for drug delivery applications
(2015)A pH-sensitive blend of polyurethane (PU) and poly(2-(diethyl amino)ethyl methacrylate (PDEA) with good film-forming capacity was prepared from the corresponding aqueous dispersions. The polymer matrix was first characterized ... -
Effect of antioxidant active films on the oxidation of soybean oil monitored by Fourier transform infrared spectroscopy
(2014)An active film prepared from waterborne polyurethane incorporated with different concentrations of butylated hydroxytoluene (BHT) and a-tocopherol was developed, and the films’ antioxidant character- istics were studied ... -
Evaluation of pH-sensitive polyurethane 2-diethylaminoethyl methacrylate hybrids potentially useful for drug delivery developments
(2015)Smart sensitive polymers have been used to improve processes in drug delivery. In this article, we evaluate the behavior of polyurethane/N,N-diethylaminoethyl methacrylate hybrids (PU/DEA) as pH- responsive polymers ... -
Evaluation of pH-sensitive poly(2-hydroxyethyl methacrylate-co-2- (diisopropylamino)ethyl methacrylate) copolymers as drug delivery systems for potential applications in ophthalmic therapies ocular delivery of drugs
(2015)Smart polymers like pH sensitive systems can improve different pharmacological treatment. In this work the behavior of copolymers containing 2-hydroxyethyl methacrylate (HEMA) with different proportions of 2-(diisopropyl ... -
Impregnación de maderas de baja densidad con hidrofugantes organosilícicos
(2017)En este trabajo se estudiaron las propiedades de madera de Araucaria angustifolia modificada químicamente por impregnación con alquilalcoxisilanos con diferente longitud de cadena hidrocarbonada, hidrolizados y condensados ... -
Phase transformation during the zeolitization of fly ashes
(Elsevier, 2017)The reactivity of a fly ash discarded from a thermoelectric power station was evaluated in terms of its hydrothermal conversion into NaA-containing products. The influence of ash pretreatments and the effect of changes ... -
Theoretical and experimental study of isothiazolinone adsorption onto ordered mesoporous silica
(Elsevier, 2016)Mesoporous silica SBA-15 particles were synthesized in order to evaluate their effectiveness asencapsulating agents for a commercial biocide composed of a mixture of methylisothiazolinone andchloromethylisothiazolinone ... -
Electrochemical performance comparison of MWCNTs Ni (OH)2 composite materials by two preparation routes
(Springer, 2017)Carbon materials are used to improve the nickel hydroxide electrode capacity in rechargeable alkaline batteries. Herein, we present the preparation of multiwall carbon nanotubes/nickel hydroxide composites (MWCNTs/Ni ... -
Encapsulación de compuestos biocidas en materiales silíceos mesoporosos
(Investigación Joven, 2015)Se llevó a cabo la síntesis de materiales silíceos mesoporosos con diferentes grados de ordenamiento (SBA-15, MCF). Se estudió su uso como matrices estabilizadoras de un biocida comercial. Mediante adsorción/desorción de ... -
Estudio de diferentes condiciones de síntesis para la obtención de zeolita NaA a partir de cenizas volantes
(Investigación Joven, 2015)En este trabajo se propuso zeolitizar una ceniza volante industrial a través de un proceso hidrotermal. Para ello, se probó mejorar su reactividad sometiéndola a un pretratamiento de calcinación en presencia de compuestos ... -
Methanol tolerant electrocatalysts for the oxygen reduction reaction
(Springer, 2015)Direct methanol fuel cells (DMFCs) represent an interesting alternative in obtaining electricity in a clean and efficient way. Portable power sources are one of the most promising applications of passive DMFCs. One of the ...