Studi Variasi Suhu dan Lama Pemanasan dalam Proses Delignifikasi Selulosa Daun Kelapa sebagai Penguat Kertas Kemasan: Study of Temperature Variations and Heating Duration in the Delignification Process of Coconut Leaf Cellulose as a Reinforcement for Packaging Paper. JBETA 2026, 14 (2). https://doi.org/10.24843/jbeta.2026.v14.i02.p00.