SINTESIS DAN KARAKTERISASI NANOSILIKA DARI TETRAETHYLORTHOSILICATE (TEOS) DENGAN PENAMBAHAN POLIETILEN GLIKOL (PEG) MENGGUNAKAN METODE SOL-GEL

Abstract

Study on the synthesis and characterization nanosilica of tetraethylorthosilicate (TEOS) with the addition of polyethylene glycol (PEG) using sol-gel method has been done. Addition of PEG is used as a capping agent that aims to avoid the occurrence of agglomeration. Sol solution was added with PEG6000 solution with concentration of 10% and 15% (w / v). The mixed solution was

evaporation with a temperature of 700C for 48 hours. The obtained crystals were

crushed

and calcination at 6000C for 2 hours. The resulting product was characterized to determine the effect of PEG-6000 (10%, and 15% (w / v)) variation on the mean particle size, morphology and distrbusi of the resulting nanosilica particles. The results that the typical absorption peak of SiO2 in all samples was the siloxane group (Si-O-Si) which was the typical peak of TEOS. The resulting morphology is amorph. The average particle size was 55.55 nm for Ns control, Ns-PEG 10% (43.72 nm), and Ns-PEG 15% (52.40 nm) and. The best average size distribution was Ns-PEG 10% with PdI value of 0, 73 which showed good uniformity and particle size 3,4 d.nm.