Martes 13 - 9:30
Probing structure development during 3-D printing while “operando” using scattering methods with X-ray synchrotron radiation
The performance of simultaneous X-ray scattering at Small Angles (SAXS) and at Wide Angles with synchrotron radiation can be used to characterize structure development during “operando” 3D printing Fused Filament Fabrication (FFF). The performance of the set-up can be successfully applied to evaluate crystallization of 3D printed thermoplastic polymers [1,2]. The real time evolution of the crystallization and molecular orientation of different parts of the printed specimen can be evaluated with resolution below 50 μm. This evaluation can be useful in order to minimized structural modifications due to the post printing crystallization that eventually will proceed during storage in the case of polymers with glass transition below room temperature.
Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain
[1] Probing structure development in Poly(vinylidene Fluoride) during “operando” 3-D printing by Small and Wide Angle X-ray Scattering. T.A. Ezquerra et al. Polymer 249, 124827 (2022)
[2] Structure Development in Polymers during Fused Filament Fabrication (FFF): An in-situ Small and Wide Angle X-ray Scattering Study using Synchrotron Radiation. A. Nogales et al. Macromolecules 52(24), 9715-9723 (2019)
This work has been funded by the Spanish State Research Agency (AEI) and by the European Regional Development Fund (ERDF) “A way of making Europe” through projects TED2021-129845B-I00, PID2022-138635NB-I00 and PID2019-106125GB-I00. SAXS/WAXS experiments were performed at NCD-SWEET beamline at ALBA Synchrotron with the collaboration of ALBA staff.