Optimization of Cellulose Acetate with Acetylation from Empty Fruit Bunch (EFB) using Respon Surface Methodology (RSM)Novita Eka Nur Ilma Budiana, Lailatul Qadariyah and MahfudE3S Web Conf., 695 (2026) 03008DOI: https://doi.org/10.1051/e3sconf/202669503008