Kelarutan Zat Warna Organik Dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Kationik (Hexadecyl Trimethyl Ammonium Bromide) dan Pentanol

Abstract

Research on the solubility of organic dyes in gelation microemulsion water in oil (w/o) water system, cationic surfactant (Hexadecyl Trimethyl Ammonium Bromide) and pentanol aims to prepare gels from microemulsion (w/o) using the sol-gel method by adding TEOS and ethanol in a ratio of 1:8 mol which hydrolyzed with water to form a gel, the percentage of organic dye solubility of turmeric powder at pH 4,5 and 9,5 3,92% and 3,95% then dragon fruit peel powders 1,96% and 1,93% at pH 4,5 and 9,5. Respectively, density testing can be carried out to see the concentration of the dye with greatest value that is turmeric powder 0,8677 g/cm³ and 0,8684 g/cm³ for pH 4,5 dan 9,5. Measurement of refractive index to see the homogeneity of the largest solution is turmeric at pH 4,5 and 9,5 namely 1,4014 and 1,4024.