Browsing by Subject "Crystallization"
Now showing items 1-20 of 64
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A review on recent progress in membrane distillation crystallization
(2021-12-06)
Article
Open AccessMembrane distillation crystallization (MDC) is a promising hybrid separation technology that can play an important role in desalination, mineral recovery from liquid solution as well as in carbon dioxide fixation. MDC ... -
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 ... -
Challenging isodimorphism concepts: formation of three crystalline phases in poly(hexamethylene-ran-octamethylene carbonate) copolymers
(American Chemical Society (ACS), 2023-10-11)
Article
Open AccessIn this work, poly(hexamethylene-ran-octamethylene carbonate) copolycarbonates were synthesized by melt polycondensation in a wide range of compositions. The copolymers displayed some of the characteristic isodimorphic ... -
Characteristic time of strain induced crystallization of crosslinked natural rubber
(Elsevier, 2012-06)
Article
Open AccessReal time Wide-Angle X-ray Scattering (WAXS) measurements during cyclic tensile tests at high strain rates (from 8 s-1–280 s-1) and at room temperature on crosslinked Natural Rubber (NR) are performed thanks to a specific ... -
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 ... -
Cristalización de una nueva poliamida impar-par: Nylon 7,10
(Universitat Politècnica de Catalunya, 2021-10-22)
Bachelor thesis
Restricted access - author's decisionL'objectiu principal d'aquest Treball Final de Grau és l'estudi de la cristal·lització d'una nova poliamida, tipus AABB, diferent a les poliamides convencionals del tipus parell, parell (per exemple, el niló 6, 6). En ... -
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
Open AccessPoly(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 ... -
Disappearance of melt memory effect with comonomer incorporation in isodimorphic random copolyesters
(American Chemical Society (ACS), 2023-09-21)
Article
Open AccessMelt memory effects in polymer crystallization have attracted much attention in the past few years. Although progress has been made in understanding how the chemical structure of polymers can affect melt memory, there are ... -
Disseny de sistemes d’agitació industrial aplicat als processos de fermentació i cristal·lització
(Universitat Politècnica de Catalunya, 2020-07-14)
Bachelor thesis
Restricted access - confidentiality agreement -
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, ...
