Pengaruh Penambahan Carboxymethyl Celullose sebagai Template terhadap Porositas Material Kalsium Silikat

Abstract

Research has been conducted on the formation of pore calcium silicate material with the addition of Carboxymethyl Cellulose as a template. Synthesis of Calcium Silicate is done by reacting water glass with Carboxymethyl Cellulose solution and addition of CaCl2. Calcium silicate obtained was calcined at 900oC for 4 hours and then characterized. Characterization using XRD shows the diffraction peaks of Dicalcium Silicate (Ca2SiO4), Wollastonite (CaSiO3) and Wollastonite 2M (CaSiO3) for Calcium silicate without template, Wollastonite (CaSiO3) and Pseudowollastonite (CaSiO3) for Calcium silicate using Carboxymethyl Cellulose 2.5%, Dicalcium Silicate (Ca2SiO4) and Wollastonite (CaSiO3) for Calcium silicate using Carboxymethyl Cellulose 5%. The FT-IR spectrum shows the presence of Si-O-Si, Si-O-Ca and Si-OH groups that indicate calcium silicate material. The results of BET analysis of calcium silicate without template showed average pore size, pore volume and surface area of each of 2,068 nm, 0,0428 (cc/g), 100,898 (m2/g), using the Carboxymethyl Cellulose 2.5% is 2,11 nm, 0,0951 (cc/g), 101,637 (m2/g); and for 5 % is 2,41 nm, 0,1201 (cc/g), 112,784 (m2/g).