On the effect of acrylamide and methylenebicacrylamid ratio on gelcasted ceramic pore character

The aim of this study was to determine the effect of acrylamide (AM) and methylenebicacrylamid (MBAM) ratio on the pore character of gelcasted ceramics. They were synthesized from clay by a method based on in situ polymerization of the ceramic body. The polymer amount was 40 % of the latter. The pore template was formed in the course of polymer degradation. AM and MBAM were used as a monomer and a crosslinker, correspondingly. Their ratio studied referred to 6:1; 12:1; 18:1 and 24:1. The results showed that the highest values of the surface area and the pore volume were obtained in case of 6:1 ratio (1.353 m2/g and 0.004 cc/g, respectively). The pore volume amounted to 0.001 cc/g, 0.001 cc/g and 0.002 cc/g in presence of AM: MBAM of 12:1, 18:1 and 24:1, respectively. The pore radius was found equal to 32.415 Å, 530.15 Å, 1067,622 Å and 29,174 Å at the respective ratios of 6:1; 12:1; 18:1 and 24:1.