A comparative study of the surface modification of cellulose nanofibers extracted from pineapple leaf by citric acid, amino silane, and butyric anhydride - Muhammad Syaiful Fadly; Kusmono; Muhammad Waziz Wildan; Dody Ariawan; Teguh Dwi Widodo; Bakri Bakri; Rushdan Ahmad Ilyas; Yogi Angga Swasono (Biomass and Bioenergy, 2026)