2026-05-05T19:32:31Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/750982025-02-24T07:30:53Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

Unveiling the inner structure of micrometric hollow polymeric fibers using synchrotron X-Ray nanotomography Torre Ordás, Jorge Cimavilla Román, Paula Cuadra Rodríguez, Daniel Rodríguez Pérez, Miguel Ángel Guttmann, Peter Werner, Stephan Pinto Sanz, Javier Barroso Solares, Suset Producción Científica In this study, a novel application of synchrotron X-ray nanotomography based on high-resolution full-field transmission X-ray microscopy for characterizing the structure and morphology of micrometric hollow polymeric fibers is presented. By employing postimage analysis using an open-source software such as Tomviz and ImageJ, various key parameters in fiber morphology, including diameter, wall thickness, wall thickness distribution, pore size, porosity, and surface roughness, were assessed. Electrospun polycaprolactone fibers with micrometric diameters and submicrometric features with induced porosity via gas dissolution foaming were used to this aim. The acquired synchrotron X-ray nanotomography data were analyzed using two approaches: 3D tomographic reconstruction and 2D radiographic projection-based analysis. The results of the combination of both approaches demonstrate unique capabilities of this technique, not achievable by other available techniques, allowing for a full characterization of the internal and external morphology and structure of the fibers as well as to obtain valuable qualitative insights into the overall fiber structure. 2025-02-21T16:49:41Z 2025-02-21T16:49:41Z 2024 info:eu-repo/semantics/article Microscopy and Microanalysis, 2024, vol. 30, n. 1, p. 14-26. 1431-9276 https://uvadoc.uva.es/handle/10324/75098 10.1093/micmic/ozad139 14 1 26 Microscopy and Microanalysis 30 1435-8115 eng https://academic.oup.com/mam/article-abstract/30/1/14/7517673 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ Atribución-NoComercial-SinDerivados 4.0 Internacional Oxford University Press SI