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.