Hydrodynamics and phase transition during polycaprolactone solution droplet impact on glass surface; International Journal of Heat and Fluid Flow; Vol. 119
| Parent link: | International Journal of Heat and Fluid Flow.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 119.— 2026.— Article number 110271, 22 p. |
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| Other Authors: | , , , |
| Summary: | Title screen This study focuses on the experimental investigation of the spreading dynamics and convective evaporation of polycaprolactone (PCL) solution droplets, with the aim of exploring the potential use of this material as a bio-ink in drop-on-demand 3D printing technology. It is revealed that solutions with a lower concentration of PCL in dichloromethane (1–4 wt%) should be used for multilayer printing due to the faster formation of the residual polymer film and lower polymer content. Solutions with a higher PCL concentration (7–10 wt%) are recommended for single-layer printing in tissue engineering, as the polymer film formation process is longer and the polymer content is higher. The choice of initial polymer concentration determined not only the morphology of the residual polymer film, but also the convection mechanism. The latter is represented as multidirectional and multiscale Rayleigh-Bénard-Marangoni convection. A study of the polymer concentration factor related to the droplet spreading dynamics revealed that the concentrations examined do not lead to the appearance of a governing effect from viscous friction. Determining the contribution of surface forces, the volatile nature of solutions was considered by scaling the maximum spreading factor and the dimensionless diameter of the residual polymer film using the measured dynamic surface tension. In practice, the relationship between the time of convective solvent evaporation and the time to reach the diameter of the residual polymer layer during the evaporation can be used to determine how long it takes for the layer to form after the contact line is fixed on the impact surface Текстовый файл AM_Agreement |
| Language: | English |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.ijheatfluidflow.2026.110271 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=685868 |