Artículos, conferencias, monografías

Permanent URI for this collection

https://riunet7pre.upv.es/handle/10251/3829

Esta colección está formada por artículos, conferencias, comunicaciones y otras publicaciones elaborados por miembros de la Universitat Politècnica de València.

En el caso de documentos publicados, antes de incluirlos en RiuNet, el autor debe saber las condiciones en que ha cedido los derechos de explotación de su obra al editor. Aunque la mayoría de los editores permiten el archivo del pre-print (el borrador del texto a publicar antes de la revisión por pares) se recomienda consultar la base de datos Sherpa / Romeo para conocer la política sobre derechos de autor de las editoriales internacionales y la base de datos Dulcinea para conocer la política sobre derechos de autor de las editoriales españolas. En caso de duda el autor debe ponerse en contacto con la editorial para conocer su política respecto al archivo en repositorios institucionales.

Browse

Browsing Artículos, conferencias, monografías by Author "659327"

Now showing 1 - 3 of 3
  • Thumbnail Image
    Publication
    Crystallization kinetics of poly(ethylene oxide) confined in semicrystalline poly(vinylidene) fluoride
    (John Wiley & Sons, 2018) Tamaño-Machiavello, María Noel; Costa, C.M.; Romero Colomer, Francisco José; Meseguer Dueñas, José María; Lanceros-Méndez, S.; Gómez Ribelles, José Luís; Dpto. de Termodinámica Aplicada; Centro de Biomateriales e Ingeniería Tisular; Escuela Técnica Superior de Ingeniería Industrial; Instituto de Salud Carlos III; Gobierno Vasco/Eusko Jaurlaritza; European Regional Development Fund; Universitat Politècnica de València; Ministerio de Economía y Competitividad; Fundação para a Ciência e a Tecnologia, Portugal; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina
    [EN] Polymer blends based on poly(vinylidene fluoride) (PVDF) and poly(ethylene oxide) (PEO) have been prepared to analyze the crystallization kinetics of poly(ethylene oxide) confined in semicrystalline PVDF with different ratios of both polymers. Both blend components were dissolved in a common solvent, dimethyl formamide. Blend films were obtained by casting from the solution at 70 degrees C. Thus, PVDF crystals are formed by crystallization from the solution while PEO (which is in the liquid state during the whole process) is confined between PVDF crystallites. The kinetics of crystallization of the confined PEO phase was studied by isothermal and nonisothermal experiments. Fitting of Avrami model to the experimental DSC traces allows a quantitative comparison of the influence of the PVDF/PEO ratio in the blend on the crystallization behavior. The effect of melting and further recrystallization of the PVDF matrix on PEO confinement is also studied. (c) 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 588-597
  • Thumbnail Image
    Publication
    Effect of the degree of porosity on the performance of poly(vinylidene fluoride-trifluoroethylene)/poly(ethylene oxide) blend membranes for lithium-ion battery separators
    (Elsevier, 2015-11-01) Gören, A.; Costa, C. M.; Tamaño Machiavello, María Noel; Cintora-Juarez, D.; Nunes-Pereira, J.; Tirado, J.L.; Silva, M. M.; Gómez Ribelles, José Luís; Lanceros-Mendez, Senentxu; Dpto. de Termodinámica Aplicada; Centro de Biomateriales e Ingeniería Tisular; Escuela Técnica Superior de Ingeniería Industrial; Ministerio de Economía y Competitividad; Fundação para a Ciência e a Tecnologia, Portugal; European Regional Development Fund
    Porous polymer membranes based on poly(vinylidene fluoride-trifluoroethylene)/poly(ethylene oxide) copolymers, P(VDF-TrFE)/PEO, are prepared through elimination (from partial to total) of PEO, leading to interconnected micropores in the polymer blends. Electrolyte uptake, thermal and mechanical properties depend on the amount of PEO present in the polymer blend. Further, the degree of crystallinity of PEO and the elastic modulus (E') of the polymer blend decrease with increasing PEO removal. Electrical properties of the polymer blend membranes are influenced by the porosity and are dominated by diffusion. The temperature dependence of the ionic conductivity follows the Arrhenius behavior. The ionic conductivity is the highest for the membranes with a volume fraction of pores of 44% (i.e., 90% PEO removal), reaching a value of 034 mS cm(-1) at room temperature. Battery performance was determined by assembling Li/C-LiFePO4 swagelok cells. The polymer blends with 90% PEO removal exhibit rate (124 mAhg(-1) at C/5 and 47 mAhg(-1) at 2C) and cycling capabilities suitable for lithium ion battery applications.
  • Thumbnail Image
    Publication
    Human Mesenchymal Stem Cells Growth and Osteogenic Differentiation on Piezoelectric Poly(vinylidene fluoride) Microsphere Substrates
    (MDPI AG, 2017) Sobreiro-Almeida, Rita; Tamaño-Machiavello, María Noel; Carvalho, E.O.; Cordon, Lourdes; Doria, S.; Senent, Leonor; Correia, D. M.; Ribeiro, C.; Lanceros-Méndez, S.; Sabater I Serra, Roser; Gómez Ribelles, José Luís; Sempere-Talens, Amparo; Escuela Técnica Superior de Ingeniería del Diseño; Dpto. de Termodinámica Aplicada; Dpto. de Ingeniería Eléctrica; Centro de Biomateriales e Ingeniería Tisular; Escuela Técnica Superior de Ingeniería Industrial; Generalitat Valenciana; Agencia Estatal de Investigación; Gobierno Vasco/Eusko Jaurlaritza; Fundação para a Ciência e a Tecnologia, Portugal; Ministerio de Economía y Competitividad
    [EN] The aim of this work was to determine the influence of the biomaterial environment on human mesenchymal stem cell (hMSC) fate when cultured in supports with varying topography. Poly(vinylidene fluoride) (PVDF) culture supports were prepared with structures ranging between 2D and 3D, based on PVDF films on which PVDF microspheres were deposited with varying surface density. Maintenance of multipotentiality when cultured in expansion medium was studied by flow cytometry monitoring the expression of characteristic hMSCs markers, and revealed that cells were losing their characteristic surface markers on these supports. Cell morphology was assessed by scanning electron microscopy (SEM). Alkaline phosphatase activity was also assessed after seven days of culture on expansion medium. On the other hand, osteoblastic differentiation was monitored while culturing in osteogenic medium after cells reached confluence. Osteocalcin immunocytochemistry and alizarin red assays were performed. We show that flow cytometry is a suitable technique for the study of the differentiation of hMSC seeded onto biomaterials, giving a quantitative reliable analysis of hMSC-associated markers. We also show that electrosprayed piezoelectric poly(vinylidene fluoride) is a suitable support for tissue engineering purposes, as hMSCs can proliferate, be viable and undergo osteogenic differentiation when chemically stimulated.