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Penelitian ini bertujuan untuk menentukan struktur selulosa dari serbuk kayu cempakasebelum dan sesudah pretreatment menggunakan SEM, XRD, dan FTIR. Serbuk kayu cempaka di treatment menggunakan larutan ion dengan konsentrasi 10%, 20%, dan 27% garam. Hasilnya menunjukan bahwa secara X-ray Diffraction ukuran partikel terkecil terjadi pada treatment dengan konsentrasi 27% garam yaitu 2,8 nm. Secara spktrum inframerah terjadi perubahan yang signifikan  yang ditunjukan pada gugus fungsi O-H streaching dengan bilangan gelombang 3317,56 . Selanjutnya ukuran pori terkecil  terjadi pada konsentrasi yang sama dan tergolong sebagai membran konvonsional filtrasi. This study aims to determine the cellulosic structure of wood powder before and after pretreatment using SEM, XRD, and FTIR. Chestnut wood powder is treated using ion solution with concentration of 10%, 20%, and 27% salt. The results showed that X-ray Diffraction of the smallest particle size occurred in treatment with 27% salt concentration whose the size was  of 2.8 nm. In infrared spktrum there was a significant change shown in the O-H streaching function group with wave number 3317.56 . Furthermore, the smallest pore size occurred at the same concentration the highest precentegc of salt and is classified as conventional filtration membrane.

Studi Perbandingan Struktur Selulosa Dengan Pretreatment Larutan Ion Pada Kayu Cempaka (Elmerillia Ovalis)