A Novel Approach Based on Polymerization-Induced Phase Separation to Prepare Carbon Monolith with Oriented Flat Porous Structure

Abstract:

A novel approach has been developed to fabricate an oriented flat porous carbon (OFPC) by combining the polymerizationinduced phase separation and pyrolysis (PIPSP) and the directional compressive deformation (DCD). At first, an elastic body in the shape of cylinder is obtained by controlling the polymerization degree of resin, and then the application of symmetrical axial pressures results in the directional deformation of two interconnected phases (of a polymerized resin phase and a poreforming agent phase) in the elastic body. Then the elastic deformed body is transformed to the rigid deformed body by precuring and further to the cured body by curing. At last, the cured body is pyrolyzed to form an OFPC. The pressures are removed after precuring. The pores in the OFPC are survived as the discs in the radial direction. Both flat pores and carbon skeletons in the OFPC are oriented toward a radial direction. The OFPC has comparable pore volume with a normal porous carbon, which is fabricated by the PIPSP with same process except for the application of the DCD.

• Periodical: Applied Mechanics and Materials (Volume 521)
• Pages: 551-554
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.521.551
• Online since: February 2014
• Authors: Shun Jian Xu*, Xing Zhong Zhao, Zong Hu Xiao, Yong Ping Luo, Yong Huang, Wei Zhong, Hui Ou
• Keywords: Carbon Materials, Directional Compressive Deformation, Oriented Structure, Polymerizationinduced Phase Separation, Porous Material

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