TY - JOUR AU - Kampeerapappun, Piyaporn AU - Wongwandee, Kritsana AU - Janon , Siriluk PY - 2020/12/22 Y2 - 2024/03/28 TI - Dyeing properties and color fastness of eri silk yarn dyed with soaked red kidney bean water JF - Journal of Metals, Materials and Minerals JA - J Met Mater Miner VL - 30 IS - 4 SE - Original Research Articles DO - 10.55713/jmmm.v30i4.877 UR - https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/877 SP - 51-59 AB - <p>The purpose of this research was to study the dyeing of eri silk yarn using soaked red bean water. The optimal condition for preparing dye solutions was a ratio of 1:5 of dried red bean to water and dyeing at 100°C for 45 min. The dyeing process was conducted with and without mordants, using three different mordanting methods; pre-mordanting, meta-mordanting, and post-mordanting. The effects on silk analyzed are color fastness to washing, wet and dry rubbing, acid and alkali perspiration, and color characteristics on CIE L*a*b* color coordinates. Without mordants, the dyed silk yarn gave a rosy brown color.  Each mordant caused shade changes on dyed yarns and mordant techniques affected the color intensity and color fastness of dyed eri silk yarn.</p> ER -