Show simple item record Fanovich, Maria Alejandra Jaeger, P. 2016-07-01T18:40:51Z 2012-02-09
dc.identifier.citation Fanovich, Maria Alejandra; Jaeger, P.; Sorption and diffusion of compressed carbon dioxide in polycaprolactone for the development of porous scaffolds; Elsevier; Materials Science & Engineering. C, Biomimetic Materials, Sensors And Systems; 32; 4; 9-2-2012; 961-968
dc.identifier.issn 0928-4931
dc.description.abstract In this work different phenomena related to sorption of carbon dioxide in polycaprolactone (PCL) have been investigated systematically. The use of compressed carbon dioxide is discussed for obtaining porous scaffolds from this biocompatible polymer. In order to determine the plasticization effect of carbon dioxide on the degree of foaming it is necessary to discuss sorption data with respect to morphological features of the polymer at conditions nearby the melting point. The amount of carbon dioxide dissolved and the kinetics of the sorption process are found to depend strongly on temperature and pressure. The solubility takes values of up to 25 wt.% being favoured by a melting and glass transition temperature depression which can be observed along with an enhanced mass transfer rate. In general, CO2 sorption in PCL increases linearly with pressure. When decompressing, microfoaming occurs which enhances the rate of gas release. Changes in morphology and crystallinity occur as a consequence of the pressure treatment. Compared to the melting temperature at atmospheric pressure there is a dramatic reduction observed under pressure where melting occurs already at a temperature below 40 °C. Even after pressure-treatment, there is a remaining change in melting temperature and crystallinity observed. Optimum conditions for obtaining adequate porous scaffolds of PCL are a relatively slow decompression after treatment at 17 MPa and 35 °C.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights info:eu-repo/semantics/restrictedAccess
dc.subject.classification Ingeniería de los Materiales
dc.subject.classification Ingeniería de los Materiales
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.subject.classification Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification Ciencias Químicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Sorption and diffusion of compressed carbon dioxide in polycaprolactone for the development of porous scaffolds
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion 2016-06-08T17:51:41Z
dc.journal.volume 32
dc.journal.number 4
dc.journal.pagination 961-968
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Fanovich, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación En Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
dc.description.fil Fil: Jaeger, P.. Hamburg University of Technology; Alemania
dc.journal.title Materials Science & Engineering. C, Biomimetic Materials, Sensors And Systems
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/10.1016/j.msec.2012.02.021

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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)