EXPLORATION OF MORDANTING TECHNIQUE ON EXCELSA COFFEE HUSK WASTE AS NATURAL DYES FOR TEXTILE PRODUCT

• Main Author: Febri Rahmawati, Evi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/76401
• Institution: Institut Teknologi Bandung

Coffee is one of the plants with high economic value and plays a crucial role in Indonesia's economic growth. The coffee processing industry in Karanggupito Village, Ngawi Regency, East Java, produces two tons of excelsa coffee beans annually. From this production, 40% of coffee bean waste is generated. Currently, the coffee bean waste is only used as animal feed, and the rest is discarded. This research aims to provide an alternative solution to optimize the potential of coffee bean waste by utilizing it as natural dye applied to textile products. Coffee bean waste contains tanin, which imparts a brown color to textiles, and color variations can be achieved by mixing suitable mordants with natural dyes on textiles. The study seeks to explore the potential of using excelsa coffee bean waste as a natural dye to produce optimal and diverse colors on textile products. This research utilizes a qualitative method with an exploratory approach. The qualitative method involves literature studies, direct observations, and interviews related to natural dyes, excelsa coffee processing, and the utilization of coffee bean waste. The exploration process is carried out to develop color variations from dyeing on cotton and ramie fabrics using excelsa coffee bean waste extract. Exploration includes the combination of four types of mordants: acid, base, salt, and metal mordants. The results of the exploration have been applied to textile products. The research proves that excelsa coffee bean waste has significant potential as a natural dye for textile products. The resulting colors can be diverse and obtained through exploration of dyeing methods, types of mordants, mordanting techniques, and dyeing duration. The study also demonstrates that the developed color variations can be successfully applied to textile products. The hope is that the findings from this research will offer an alternative solution for utilizing excelsa coffee bean waste and contribute to the diversity of natural dye colors in textile applications.