Browsing by Subject "Crystallization"
Now showing items 1-20 of 52
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Aplicación de la espectroscopía de infrarrojo para el estudio de procesos de cristalización y polimerización. Aplicación de nuevos materiales derivados de ácido glicólico
(Universitat Politècnica de Catalunya, 2009-11)
Master thesis (pre-Bologna period)
Open AccessEn el presente Proyecto Final de Carrera se realiza la síntesis de las sales de sodio, potasio y cesio del ácido N-cloroacetil-6-aminohexanoico y se estudia su reactividad mediante espectroscopia de infrarrojo de reflexión ... -
Brill transition and melt crystallization of nylon 56 an odd-even polyamide with two hydrogen-bonding directions
(Elsevier, 2010-11-12)
Article
Restricted access - publisher's policyBrill transition and crystallization behaviour of nylon 56, a representative polymer of odd–even polyamides, were investigated by simultaneous WAXD and SAXS synchrotron radiation. Nylon 56 crystallized from solution into ... -
Bycrystal interface energy computation of growth and alignment of facets in nanocrystalline cooper
(Universitat Politècnica de Catalunya, 2017-09-22)
Bachelor thesis
Restricted access - author's decision
Covenantee: University of Colorado Colorado SpringsGrain boundaries are of great importance in polycrystalline materials on account of the major influence they have on their properties and behavior. Deformation twining, interface sliding, recrystallization or microstructure ... -
Conformational polymorphism: The missing phase of 1,1,2,2-tetrachloroethane (Cl2HC-CHCl2)
(2013-05)
Article
Restricted access - publisher's policyHalogenoethane derivatives are known to exhibit different polymorphs involving a different translational, orientational, and conformational order. The 1,1,2,2- tetrachloroethane (Cl2HC−CHCl2) exhibits a normal pressure ... -
Controlling the isothermal crystallization of isodimorphic PBS-ran-PCL random copolymers by varying composition and supercooling
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-01-01)
Article
Open AccessIn this work, we study for the first time, the isothermal crystallization behavior of isodimorphic random poly(butylene succinate)-ran-poly(e-caprolactone) copolyesters, PBS-ran-PCL, previously synthesized by us. We perform ... -
Crystal polymorphism of polylactides and poly(Pro-alt-CO): The metastable beta and gamma phases. Formation of homochiral PLLA phases in the PLLA/PDLA blends
(Elsevier, 2017-04-21)
Article
Restricted access - publisher's policyAmong the various crystalline phases of polylactides, an elusive orthorhombic gamma phase (¿PLLA) had been obtained so far only by epitaxial crystallization on hexamethylbenzene. A recent work by J. Shao et al. (Macromolecules, ... -
Crystalline silicon solar cells beyond 20% efficiency
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
Conference report
Open Access—This paper describes a fabrication process to obtain high efficiency c-Si cells (> 20%) based on the Laser Fired Contact Passivated Emitter Rear Cell (LFC-PERC) concept. Photovoltaic efficiencies beyond 20% have ... -
Crystalline structures and structural transitions of copolyamides derived from 1,4-diaminobutane and different ratios of glutaric and azelaic acids
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-04-01)
Article
Open AccessCopolyamides derived from even 1,4-butanediamine and different mixtures of odd dicarboxylic acids with a great difference in the number of methylene groups (i.e., glutaric and azelaic acids with 3 and 7 groups, respectively) ... -
Crystallization kinetics of chain extended poly(L-lactide)s having different molecular structures
(2020-01-15)
Article
Restricted access - publisher's policyPoly(L-lactide)s (PLLAs) with different chain structures were prepared by reactive melt processing and using Joncryl ADR as chain extender. Results of gel permeation chromatography (GPC) revealed that chain extended PLLAs ... -
Crystallization of microparticulate pure polymorphs of active pharmaceutical ingredients using CO 2-expanded solvents
(2012-04-04)
Article
Open AccessThe feasibility of the Depressurization of an Expanded Liquid Organic Solution (DELOS) method to process different active pharmaceutical ingredients (APIs) as finely divided powders with narrow particle size distribution, ... -
Crystallization study on CuZr alloys with fixed stoichiometry and different microstructures (amorphous or nanocrystal line)
(Universitat Politècnica de Catalunya, 2013-07-19)
Master thesis
Open AccessGlasses are solid materials characterized by their lack of long range order, that is, solids with a liquid-like structure. Besides the common silica-based glasses conventionally used in windows, glasses obtained with ... -
Crystallization, phase evolution and corrosion of Fe-based metallic glasses: An atomic-scale structural and chemical characterization study
(2014-06-01)
Article
Restricted access - publisher's policyUnderstanding phase changes, including their formation and evolution, is critical for the performance of functional as well as structural materials. We analyze in detail microstructural and chemical transformations of the ... -
Effect of liquefynig crystallized honey through an ultrasound bath
(Universitat Politècnica de Catalunya, 2010-06)
Master thesis
Restricted access - author's decisionCrystallization of honey is a common process of the honey industry. Liquid honey is preferred by most of the consumers and by food companies for ease of handling and a better method compared to expensive and time-consuming ... -
Effect of surface treatment of titanium dioxide nanoparticles on non-isothermal crystallization behavior, viscoelastic transitions and cold crystallization of poly(ethylene terephthalate) nanocomposites
(2014-01-01)
Article
Restricted access - publisher's policyThe effect of untreated and tri-n-octylphosphine oxide (TOPO) surface-treated TiO2 nanoparticles when included as filler in poly (ethylene terephthalate) on its compatibility, non-isothermal crystallization behavior, ... -
Effect of the presence of an ester of montanic acids with multifunctional alcohols in the composites of titanium dioxide nanoparticles with poly(ethylene terephthalate) in their non-isothermal crystallization
(2015-09-02)
Article
Open AccessThe effect of the addition of an ester of montanic acid with multifunctional alcohols in the effectiveness of the dispersion and compatibility of TiO2 nanoparticles when included as filler in poly(ethyleneterephthalate) ... -
Effect of the recycling and annealing on the mechanical and fracture properties of poly(lactic acid)
(2010-12)
Article
Restricted access - publisher's policyThe aim of this work is to evaluate the use of Poly(lactic acid)(PLA) industrial waste as a source of raw material for certain applications, as well to understand the effects of the annealing on the fracture behaviour of ... -
Estudi de la cristal·lització dels nilons 8,9 i 12,9
(Universitat Politècnica de Catalunya, 2015-01)
Master thesis (pre-Bologna period)
Open AccessL'objectiu del Projecte Final de Carrera és l'estudi de la cristal·lització isotèrmica dels nilons 8,9 i 12,9 així com l'anàlisi dels canvis estructurals que sofreixen al modificar la temperatura. Per fer-ho, s'han emprat ... -
Estudi de la interacció de molècules orgàniques en la cristal·lització de fosfats de calci
(Universitat Politècnica de Catalunya, 2014-01)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEl present projecte es troba emmarcat en el camp de la biomineralització, el qual tracta de la síntesi de minerals a través d'organismes vius. Un ingredient indispensable en els processos de biomineralització és l'ús de ... -
Estudi de les tecnologies d'eliminació i recuperació del fòsfor en una EDAR
(Universitat Politècnica de Catalunya, 2013-05)
Master thesis (pre-Bologna period)
Open AccessEl fòsfor és un recurs limitat incapaç de mantenir a llarg termini un nivell d’extracció com l’actual. Tot el fòsfor que flueix actualment, no només no es recupera i es considera com a perdut, sinó que les entrades de ... -
Estudio de la cristalización de copoliésteres derivados de los ácidos azelaico y pimélico
(Universitat Politècnica de Catalunya, 2011-06)
Master thesis (pre-Bologna period)
Open AccessEn este Proyecto de Final de Carrera se aborda el estudio de la síntesis y la cristalización de los poliésteres derivados del 1,9-nonanodiol y de los ácidos azelaicos y/o pimélicos. También se ha estudiado la policondensación ...
