The Effect of Mole Ratio of Acrylamide (AM) Monomer and Methylene-bis-acrylamide (MBAM) Crosslinker Toward the Hardmess of Gelcasting Porous Ceramics

Abstract

The Effect of Mole Ratio of Acrylamide (AM) Monomer and Methylene-bis-Acrylamide (MBAM) Crosslinker Toward the Hardness of Gelcasting Porous Ceramics. The study aimed to determine the effect of mole ratio of acrylamide (AM) monomer and crosslinker methylene-bis-acrylamide (MBAM) croslinker toward the hardness of gelcasting porous ceramics. The raw material used was natural clay of South Sulawesi. The ceramic synthesis process using colloidal gelcasting method with in situ polymerization in the slurry as basic principles. Ceramic powder was added gradually into the premix solution containing a mixture of AM and MBAM with mole ratio of 6: 1; 12: 1; 18: 1; 24: 1, then homogenized and mixed with APS initiator and TEMED catalyst. The ceramic dough then put into a mold, dried in air and then sintered. The ceramic hardness was measured using Brinell Hardness tester. The results showed the ceramic hardness was increased at a ratio of 6: 1 to 18: 1 and decreased at a ratio of 24: 1. The hardest ceramic body occured at a ratio of 18 : 1, that was equal to 104 HB.