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Journal : Science and Technology Indonesia

Isolation and Characterization of Cellulose Microfibril (MFC) from Gracilaria sp. with Different Quality Grades Nurhayati; Irianto, Hari Eko; Supriyanto, Agus; Kusumawati, Rinta; Basmal, Jamal; Munifah, Ifah; Setiawati, Natalia Prodiana; Kusumaningrum, Wida Banar; Amanda, Putri; Roziafanto, Ahmad Nandang; Riastuti, Rini; Chalid, Muchamad
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.712-724

Abstract

The cellulose found in Gracilaria sp. has not been utilized optimally. This study investigated the characteristics of cellulose and cellulose microfibril (MFC) isolated from three grades of Gracilaria sp. Descriptive tests were performed to determine the quality of eachgrade, including observations on moisture content, ashcontent, CAW,andimpurities. The extraction process involved separating agar from Gracilaria sp., isolating cellulose using 10% NaOH, and bleaching cellulose with 3% NaOCl. The bleached cellulose was then ultrasonicated to produce MFC. Characterization was performed using FTIR, XRD, PSA, STA, DSC, and py-GC/MS. FTIR analysis indicated similar peaks for both cellulose forms but only differed in transmittance intensity. The crystallinity index from XRD analysis was 22–39% for raw Gracilaria sp., 25–46% for cellulose, and 68–89% for MFC. The particle size distribution of MFC mostly ranged between 200–500 nm, with 63.16% frequency. TG analysis showed cellulose decomposition with a Tonset of 231–260oC and a Tmax of 318–326oC. DSC analysis revealed that sonication enhances the polymer structure’s crystallization compared to pre-sonicated cellulose and raw material. The py-GC/MS analysis showed that D-allose and n-Hexadecanoic acid were the major components.
Co-Authors ., Megarahmi Abdul Azis Abdul Jabbar Abdurrohim, Nur Adeswastoto, Hanantatur Adriyana, Rika Afrilda, Nur Hayati Agfanisa, Rahma Agus Supriyanto Alhumairo, Kamila Amelia, Anita Andreansyah, Ilham Aqwa Naser Daulay Ardeny, Anisa Nur Faizah Asniar Asniar Asruri, Selfi Bhrata, Pramudya Dhana Bukhori, Ahmad Al Butar, Bunga Butar Butar, Effira Fatin Zahra Butar Chalid, Muchamad Dani Prastiwi Darmanto, Dinda Zihan Milfah Dayanti, Elis Dewi, Tike Murti Sari Dhanu Ario Putra, Dhanu Ario Diana Natalia Eldino, Habib Mulia Elisa Fazira Erlida Amnie Fahri, Rifa Fania, Yunita Farah Dineva R Farizan, M. Ariiq Fitri Rachmawati Fitri, Normelia Fransiska, Dina Hadita, Hadita Haerul Pathoni, Haerul Halisyah, Mila Hamka, Ahmad Hana, Duwi Hapzi Ali Hari Eko Irianto Haris, Amnan Heriyanti, Andhina Putri Huda, Naimatul Husna, Askia Azminatul Ida Kusuma Dewi Ifah Munifah Isrofah izky, Alfaroel Jamal Basmal, Jamal Jayawarsa, A.A. Ketut Julianti, Nursafika Khadijah Khadijah Khoirun Kholil, Putri Alifa Kusumaningrum, Wida Banar Lestari, Widya Maidani, Maidani Mardani, Bisma Alfian Marlina, Resti Mega Rahmi Meiliani, Siska Ayu Mentari, Puji Rizana Ayu Merry Rullyanti, Merry Meymi Putri, Anggun Mubarak, M Dzaky muhammad Syahbudi, muhammad Nabila, Muna Nadya, Khoirun Nanang Masruchin Nasution, Homsani Nasution, Sahara Aulia Navanti, Dovina Ni Nyoman Sawitri Nugraha, Bachtiar Rama Ardhi Nugroho, Miftah Nur Fadhilah Nur Faizah Nurahim Rasudin Nurdianah, Dinda Nurhayati Nurhayati Nurhayati Nursal, M. Fadhli Ogya Arya Putra, Akmal Pakpahan, Luis Richardo Parini, Parini Pilliang, Rizaldi Pratama, Liona Surya Putra, Agus Alisa Putra, Chistophorus Indra Wahyu Putra, Yosep Eka Rachmana, Alfitra Raya Rahiidah, Jihaan Shabri Rahma, Annisa Rahmawati, Ambar Rahmawati, Aprilia Dwi Ramadhani, Dwi Oktabella Ramadhani, Ilas Remilda Armika Vianti REZA PAHLEVI Rianto, Muhammad Richo Rifki Prayoga Aditia Rini Riastuti, Rini Rinta Kusumawati, Rinta Riyadhul Fajri Rizki Fitlya, Rizki Roza Yulida Roziafanto, Ahmad Nandang Rusi Ulfa Hasanah SAFITRI, LIDIA Sakinah Haryati Saputra, Fadri Dwi Sawardi, F. X. Sitepu, Rimna Sintalina Siti Agustina, Siti Suah, Faiz Bukhari Mohd Sumarlam Sumarlam, Sumarlam Suryaningrum, Irnanda Syaharani, Alfiana Syahputra, Muhammad Faqih Syamani, Firda Aulya Syamsurizal - - Tambunan, Tiffany Meira Trida Ridho Fariz Ulfa M. , Mahdalena Vani, Ziviska Vianaza, Vianaza Winarni, Efid Winasih, Sri Suryani Yuprapti Zahra, Raudahtul Zulkifli Zulkifli