The Nanoporous Carbon Derived from Melamine Based Polybenzoxazine and NaCl Templating
Nanoporous carbon was successfully prepared by using polybenzoxazine synthesized from bisphenol-A, melamine and formaldehyde as a precursor. The varied HCl amounts have been added into the pre-polymer solution as a catalyst for the ring-opening polymerization. The reaction was traced by FTIR and DSC. In addition, the degradation behavior was studied by TGA and the textural properties were characterized by SEM and surface area analysis (AS1-MP). The nanoporous carbon obtained showed the highest char yield up to 48%. The interconnected structure from the SEM images of the nanoporous carbon exhibited significantly high surface area of 632 m2/g, high total pore volume up to 1.78 cm2/g, small average pore diameter and narrow pore size distribution detected by AS1-MP. After the activation process, the surface area has been drastically improved leading to the increasing of surface area and total pore volume up to 1119 m2/g and 1.93 cm2/g, respectively. In order to further study on the enhancement of surface area, NaCl, a water soluble compound, has been used as a template. As a result, the surface area has been improved up to 1516 m2/g.
O. Rattanopas et al., "The Nanoporous Carbon Derived from Melamine Based Polybenzoxazine and NaCl Templating", Key Engineering Materials, Vol. 779, pp. 129-136, 2018