Enhancing the Sustainability of Kenaf-Cotton Blends: The Role of Pre-treatment in Optimized Solubilized Vat DyeingMuhammad Naoval Haris, Rizki Lestari and Dwi KumalasariE3S Web Conf., 706 (2026) 01013DOI: https://doi.org/10.1051/e3sconf/202670601013