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Nurul Laili Arifin
Politeknik Negeri Batam
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Journal : Makara Journal of Technology

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Multistage Sonication Effect on the Composition and Properties of Degraded Chitosan Product Arifin, Nurul Laili; Savitri, Emma; Indah, Anjar; Putra, Fesa; Sumarno, Sumarno
Makara Journal of Technology Vol. 23, No. 1
Publisher : UI Scholars Hub

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Abstract

The sonication method randomly breaks polymer chains to produce a varied distribution of products. A scheme with multi-stage sonication steps is proposed to identify oligomers and low molecular weight chitosan based on changes to the degrad-ed product. For each sonication level, 1% (w/v) chitosan in 1% (v/v) aqueous acetic acid was sonicated for 120 min at 60 °C. The products of the sonication treatment were deprotonized by adding an alkali solution, freeze dried and insoluble product re-sonicated until a low molecular weight was produced. Low molecular weight chitosan/insoluble products were character-ized with Fourier-transform infrared spectra (FT-IR) and X-ray diffraction (XRD) to determine the effect of multistage soni-cation on degree of deacetylation (DD) and degree of crystallinity. The viscosity of the average molecular weight of insolu-ble chitosan was estimated by a viscometric method, while the degree of polymerization (DP) of the chitosan oligomers (COS) were determined by end group analysis. The results showed that the molecular weight of insoluble chitosan decreased and reached a limiting value, (Mlim). The percent yield of oligoglucosamine of the soluble products increased with the num-ber of the sonication stages. The degree of crystallinity of insoluble chitosan increased from 19% to 34.14% while the DD decreased from 82% to 78.1%.
Co-Authors Abulija Maskarai Adhe Aryswan Adi Syahputra Purba Adicita, Yosef Annisa Fyona Ari Wibowo Ari Wibowo Ari Wibowo Arif Wahyu Budiarto Asrafi Asrafi Aulia Fajrin Baharudin, Budi Batubara, Ninda Hardina Budi Baharudin Budiman Budiman Butar Butar, Hendra Butar, Hendra Butar Cahyo Budi Nugroho Dewi, Ifti Luthviana Domi Kamsyah Emma Savitri Fajrin, Aulia Fauzun Atabiq Fedia Restu Guruh Maulana Suhendi Hanifah Widiastuti Hendra Saputra Ihsan Saputra Ikram Akrabi Indah, Anjar Irawan, Benny Haddli Irwanto Zarma Putra James Siregar Jumadi Jumadi Kartika Kartika Kristianto, Fesa Putra Lalu Giat Juangsa Putra Mega Gemala Meida Perwira Antartika Meilani Mandhalena Manurung Mohamad Alif Dzulfiqar Mufti Fathonah Muvariz Muhammad Andi Nova Muhammad Hasan Albana Muhammad Ismail Muhammad Ismail Muhammad Nurhidayat Muhammad Syafei Gozali Mutiarani Mutiarani Naufal A Prasetyo Nidia Yuniarsih Ningsih, Tiwi Gustria Nisrina Afifah Novianti Nugroho Pratomo Ariyanto Nugroho Pratomo Aryanto Nur Fitria Pujo Leksonowati Nurman Pamungkas Nurul Ulfah Nurul Ulfah Parlin Jhony Haposan Siagian Putra, Rama Dani Eka Rafi Julio Putra Rahman Hakim Rahman, Muhammad Noval Rivaldo Rimo Rizky Pratama Hudhajanto Rosbandrio, Wowo Roza Puspita Rusdwinanto, Chandra Defta Saiful Akhyar Lubis Sapto Wiratno Satoto Sembiring, Nikolas Setiawan, Oki Siregar, James Sitorus, Mido Ester Sriyanto Sriyanto Sudaryo Sudaryo Sudaryo Sudaryo Sudirman Sudirman Sulistioso Giat Sukaryo Sulistioso Giat Sukaryo, Sulistioso Giat Sumarno . Tian Havwini Widodo Widodo Widodo Widodo Windy Stefani Wowo Rossbandrio Yogantara Yogantara