Regular Aligned Porous Waterborne Polyurethane Composite Obtained by a Directional Freeze-Drying Process
- https://doi.org/10.2991/amsee-16.2016.2How to use a DOI?
- directional freeze-drying process; concentration; freezing rate; regular; aligned pores; waterborne polyurethane
Regular aligned porous waterborne polyurethane (WPU) composites were simply obtained by a directional freeze-drying process in the study. The morphology of the WPU composite can be tailored with different concentration of the WPU dispersion and freezing rate. Very regular aligned pores along the immersion direction can be obtained when the concentration of WPU dispersion is 20 wt.%. In addition, the periodicity of the aligned pores can be tuned by the freezing rate such as the temperature of cryogenic liquid or immersing velocity. The periodicity of the aligned pores increases when the immersed velocity decreases and the temperature of the cryogenic liquid increases. With the theory of Mullins-Sekerka, the periodicity of the aligned pores can be accurately calculated.
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Hong He AU - Jiale Xie AU - Jianfeng Tang AU - Tingting Zhou PY - 2016/04 DA - 2016/04 TI - Regular Aligned Porous Waterborne Polyurethane Composite Obtained by a Directional Freeze-Drying Process BT - Proceedings of the 2016 International Conference on Advanced Materials Science and Environmental Engineering PB - Atlantis Press SP - 4 EP - 7 SN - 2352-5401 UR - https://doi.org/10.2991/amsee-16.2016.2 DO - https://doi.org/10.2991/amsee-16.2016.2 ID - He2016/04 ER -