20.500.12556/DKUM-92193 Solidification of gelatine hydrogels by using a cryoplatform and its validation through CFD approaches In this work, we developed a numerical approach based on an experimental platform to determine the working conditions on a cryoplatform and to predict and evaluate the cryogenic printing of hydrogels. Although hydrogels have good biocompatibility, their material properties make it difficult to print them with high precision and shape fidelity. To overcome these problems, a cryogenic cooling platform was introduced to accelerate the physical stabilisation of each deposited layer during the printing process. By precisely controlling solidification (crystallisation), each printed material can withstand its own weight to maintain shape fidelity, and the porosity of the scaffolds can also be controlled more selectively. The thermophysical properties of gelatine hydrogels were investigated to gain a better understanding of the phase change upon freezing. The corresponding material properties and experimental observations of gelatine solidification served as the basis for developing a computational fluid model (CFD) to mimic the solidification of gelatine hydrogels using a cryoplatform at different process conditions and extruder speeds. The goal was to develop a tool simple enough to predict acceptable process conditions for printing gelatine hydrogels using a cryoplatform. gelatine hydrogel cryoprinting CFD simulation solidification modelling želatina hidrogeli kriotisk CFD simulacije modeliranje strjevanja true false true MDPI AG Angleški jezik Slovenski jezik https://www.mdpi.com/journal/gels © 2022 by the authors. Članek v reviji 2025-03-20 08:41:14 2025-03-20 08:41:14 2025-03-21 03:10:50 0000-00-00 00:00:00 2022 0 0 17 str. iss. 6 Vol. 8 June 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2022-04-19 2022-06-08 2022-06-10 544.773.432 112219395 10.3390/gels8060368 2310-2861 gels-08-00368.pdf gels-08-00368.pdf 1 DC7E8D50042EBF69676C962C71013648 3967192102a7301def63678cceeaa5e6bfa0daa59edd0ccefb20a4f4af4a55c5 28270bce-055f-11f0-9be3-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189501 https://www.mdpi.com/2310-2861/8/6/368 0 2faaf6b6-055f-11f0-9be3-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189502 Fakulteta za strojništvo 0 0 0