Exploració per tema "Nanocrystals"
Ara es mostren els items 28-47 de 53
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Mixed AgBiS2 nanocrystals for photovoltaics and photodetectors
(Royal Society of Chemistry, 2022-03-03)
Article
Accés obertHeavy-metal-free colloidal nanocrystals are gaining due attention as low-cost, semiconducting materials for solution-processed optoelectronic applications. One common limitation of such materials is their limited carrier ... -
Molecular-free synthesis of multifunctional graphene oxide-copper sulfide nanocomposite gels
(Universitat Politècnica de Catalunya, 2021-07-22)
Projecte Final de Màster Oficial
Accés restringit per acord de confidencialitat -
Nanocristales de quitina-modificada cargados en fibras de ácido poliláctico: obtención de matrices más hidrofílicas
(Universitat Politècnica de Catalunya, 2018-06-27)
Treball Final de Grau
Accés obertLa técnica de electrohilado permite formar matrices de fibras en escala micrométrica y nanométrica a partir de disoluciones de polímeros. Se pueden emplear materiales biodegradables como no biodegradables, pero en general ... -
Nanofiber composites of polyvinyl alcohol and cellulose nanocrystals: manufacture and characterization
(2010-03-08)
Article
Accés restringit per política de l'editorialCellulose nanocrystals (CN) were used to reinforce nanofibers in composite mats produced via electrospinning of poly(vinyl alcohol) (PVA) with two different concentrations of acetyl groups. Ultrathin cross-sections of the ... -
Natural additives to enhance the barrier properties of nanocellulose films
(2022)
Comunicació de congrés
Accés obertFinding alternatives to fossil-based materials is one of the most important challenges of our time. Since cellulose is the most abundant natural polymer on the planet, its use to solve this challenge would be ideal. In the ... -
One-component nanocomposites based on polymer-grafted cellulose nanocrystals
(American Chemical Society (ACS), 2020-02-11)
Article
Accés obertCellulose nanocrystals (CNCs) are widely used as reinforcing fillers in polymers due to their exceptionally high stiffness and strength and because the biological species from which they are isolated represent renewable ... -
Orientation of polylactic acid–chitin nanocomposite films via combined calendering and uniaxial drawing: Effect on structure, mechanical, and thermal properties
(2021-12-06)
Article
Accés obertThe orientation of polymer composites is one way to increase the mechanical properties of the material in a desired direction. In this study, the aim was to orient chitin nanocrystal (ChNC)-reinforced poly(lactic acid) ... -
Pickering emulsions stabilized by cellulose nanocrystals grafted with thermo-responsive polymer brushes
(2012-03)
Article
Accés obertCellulose nanocrystals (CNCs) from ramie fibers are studied as stabilizers of oil-in-water emulsions. The phase behavior of heptane and water systems is studied, and emulsions stabilized by CNCs are analyzed by using drop ... -
Poly(N-isopropylacrylamide) brushes grafted from cellulose nanocrystals via surface-initiated single-electron transfer living radical polymerization
(2010-10-11)
Article
Accés obertCellulose nanocrystals (CNCs) or nanowhiskers produced from sulfuric acid hydrolysis of ramie fibers were used as substrates for surface chemical functionalization with thermoresponsive macromolecules. The CNCs were grafted ... -
Polymer nanocomposites with cellulose nanocrystals made by co-precipitation
(Wiley, 2018-06-20)
Article
Accés obertA premixing method to produce polymer nanocomposites with cellulose nanocrystals (CNCs) is reported. This method involves the dissolution and dispersion of a polymer and CNCs in an organic solvent, co-precipitation into ... -
Polymorphism and solid-solid phase transitions of hydrogen bonded 2-adamantanol and 2-methyl-2-adamantanol compounds
(2022-05-28)
Article
Accés obertThe polymorphic behavior at normal pressure as a function of temperature of 2-adamantanol (C10H16O) and 2-methyl-2-adamantanol (C11H18O) has been investigated by single-crystal and powder X-ray diffraction as well as ... -
Recent advances and an industrial perspective of cellulose nanocrystal functionalization through polymer grafting
(2019-04)
Article
Accés obertCellulose nanocrystals (CNCs) are an emerging nanomaterial for applications ranging from coatings and construction to adhesives and biomedical devices. Owing to their high aspect ratio, stiffness, and reinforcing potential, ... -
Reinforcing Poly(e-caprolactone) nanofibers with cellulose nanocrystals
(2009-09-30)
Article
Accés obertWe studied the use of cellulose nanocrystals (CNXs) obtained after acid hydrolysis of ramie cellulose fibers to reinforce poly(e-caprolactone) (PCL) nanofibers. Chemical grafting with low-molecular-weight PCL diol onto the ... -
Removal of reactive black 5 azo dye from aqueous solutions by a combination of reduction and natural adsorbents processes
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-02-24)
Article
Accés obertIn this study, a combined process of reduction and adsorption for the degradation of azo dye with nanocrystalline Fe80Si10B10 powder as a reducing agent is analyzed. A mechanical alloying technique produced the powdered ... -
SnP nanocrystals as anode materials for Na-ion batteries
(Royal Society of Chemistry (RSC), 2018-05-14)
Article
Accés obertTin monophosphide is a layered material consisting of Sn–P–P–Sn sandwiches that are stacked on top of each other to form a three dimensional crystallographic structure. Its composition and crystal structure makes it an ... -
Solution-based synthesis and processing of Sn- and Bi-doped Cu3SbSe4 nanocrystals, nanomaterials and ring-shaped thermoelectric generators
(Royal Society of Chemistry, 2017)
Article
Accés obertCopper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and ... -
Sonochemical synthesis and stabilization of concentrated antimicrobial silver-chitosan nanoparticle dispersions
(Wiley, 2017-08)
Article
Accés obertThis work reports on a green synthetic route to produce concentrated aqueous dispersions of silver nanoparticles (AgNP) employing high-intensity ultrasound (US) and chitosan (CS) as a non-toxic reducing agent for Ag1 salts ... -
Stiffness-changing of polymer nanocomposites with cellulose nanocrystals and polymeric dispersant
(2019-05)
Article
Accés obertBio-inspired, water-responsive, mechanically adaptive nanocomposites are reported based on cellulose nanocrystals (CNCs), poly(ethylene oxide-co-epichlorohydrin) (EO-EPI), and a small amount of poly(vinyl alcohol) (PVA), ... -
Surface chemistry and nano-/microstructure engineering on photocatalytic In2S3 nanocrystals
(2018-06-05)
Article
Accés obertColloidal nanocrystals (NCs) compete with molecular catalysts in the field of homogenous catalysis, offering easier recyclability and a number of potentially advantageous functionalities, such as tunable band gaps, plasmonic ... -
Surface interaction forces of cellulose nanocrystals grafted with thermoresponsive polymer brushes
(2011-07-11)
Article
Accés obertThe colloidal stability and thermoresponsive behavior of poly(N-isopropylacrylamide) brushes grafted from cellulose nanocrystals (CNCs) of varying graft densities and molecular weights was investigated. Indication of the ...