Ketahanan Warna, Kualitas Fisik, dan Kandungan Minyak dengan Perbedaan Mordanting Agent Kulit Domba Ecoprint
Fiantoni Peter Lukas Mangiradja, Prof. Ir. Ambar Pertiwiningrum, M.Si., Ph.D., IPU., ASEAN Eng.
2025 | Tesis | S2 Ilmu Peternakan
This study aims to analyze the effect of various mordanting treatments in the ecoprinting method of chrome-tanned sheepleather and determine the type of mordanting agent with the best effect based on the physical quality of color resistance test to rubbing, tear strength test, tensile strength, extensibility, and oil content test. Chrome-tanned sheepleather was used as the main material, with three different ecoprint treatments: P0 (no mordanting), P1 (3% alum mordant), and P2 (3% lime mordant). Each treatment was repeated three times for data validity. The ecoprinting process consists of three stages, namely pre mordanting, mordanting, and post mordanting. The results were analyzed with One Way Anova test, and if the results were significantly different, then continued with Duncan's New Multiple Range Test (DMRT). The results showed that the treatment without mordanting gave the best results in color resistance to scrubbing both wet and dry. For physical quality, alum mordanting produced the highest tensile strength (887,547 ± 24,353 N/cm²) and pliability (66,84 ± 4.18%), but decreased tear strength (182,234 ± 12,833 N/cm) compared to no mordanting (336,463 ± 31,690 N/cm). Meanwhile, lime mordanting showed the lowest performance in all physical quality parameters. It was concluded that alum mordanting gave the best results in tensile strength and pliability, but decreased tear strength and increased oil content beyond the standard. The no-mordant treatment gave balanced results, with the best performance in tear strength and color resistance to rubbing, and met the standards in tensile strength, drapability and oil content. Lime mordanting tended to give the worst results in most of the parameters tested.
Kata Kunci : ecoprinting, mordanting, kulit domba samak krom, ketahanan warna, kualitas kulit/ ecoprinting, mordanting, chrome-tanned sheepleather, color fastness, leather quality