Preparation of Hydrogel Based on Pineapple Leaf Cellulose Microcrystalline (Ananas Comosus L. Merr) with Variation in Glutaraldehyde Volume. jisk [Internet]. 2020 Dec. 31 [cited 2024 Nov. 9];1(1):12-7. Available from: https://ejournal.sumateraconnect.or.id/index.php/jisk/article/view/3