Synthesis of Acetin as Bio-additives to Improve the Fluidity of Environmentally Friendly BiodieselR. Y. Perry Burhan, Yulfi Zetra, Nirmala Puteri Batari, Auliya Arsanti, R. Arizal Firmansyah, Grasianto Grasianto and Badril AzharE3S Web Conf., 678 (2025) 02004DOI: https://doi.org/10.1051/e3sconf/202567802004