Nita Kusumawati, Agus Budi Santoso, Maria Monica Sianita, Supari Muslim
This study is conducted to explore and utilize fresh mangosteen peel as an upcoming raw material for the production of natural dyes. The extract of fresh mangosteen peel is tested on cotton fabric by using alum as a mordanting agent who processed by pre-mordant dyeing procedure and fixation using 3 (three) different types of fixer. To obtain optimum interaction of fabric, mordant, dye and fixer, washing procedure has been performed using Turkish Red Oil (TRO) before the mordanting stage with varying washing time and repeated dyeing procedure with varying frequency of dyeing. As a result, the application of pre-mordanting dyeing method and fixation using iron (II) sulfate (FeSO4.7H2O), alum (KAI (SO4)2.12H2O) and lime (CaO), produced very good color from mangosteen peel dyes extract. Cotton fabric that has been through the pre-mordanting dyeing procedure using dyes extract of mangosteen peel consecutively bring green, light brown, and dark brown color each on the fixation result using iron (II) sulfate, alum, and lime. Preliminary evaluation and instrumentation allow us to determine whether the application of washing time varies, the repeated frequency of immersion and the use of different fixers compound using dyes extract with similar concentration and dyeing procedure affect the color intensity of the fabric sample.
Department of Chemistry, Universitas Negeri Surabaya, Ketintang, Surabaya, 60231, Indonesia; Department of Electrical Engineering, Universitas Negeri Surabaya, Ketintang, Surabaya, 60231, Indonesia
