Preparation of micro-fibrillated cellulose from sorghum fibre through alkalization and acetylation treatments

Innovation in Polymer Science and Technology 2016

材料科学;化学

Ismojo^1,2 ; Simanulang, P.H.^1 ; Zulfia, A.^1 ; Chalid, M.^1

Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, West-Java, Depok

16424, Indonesia^1

Department of Automotive Mechanical Engineering Diploma III, Institute Technology Indonesia, South Tangerang, Serpong, Indonesia^2

关键词: Acetic anhydrides;    Chemical treatments;    Composite properties;    Environmental friendly materials;    Environmental pollutions;    Field emission scanning electron microscopes;    Fourier transform infra red (FTIR) spectroscopy;    Micro fibrillated cellulose;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/223/1/012057/pdf
DOI  :  10.1088/1757-899X/223/1/012057

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Recently, the pollution due to non-degradable materials including plastics, has led to needs on the development of environmental-friendly material. Owing to its biodegradability nature, sorghum fibres are interesting to be modified with petro-polymer as a composite. These materials are also expected to reduce the impact of environmental pollution. Surface modification of sorghum through chemical treatment was aimed to enhanced crystalline part of micro-fibrillated cellulose, thus increased compatibility to petro-polymer, as mean to improve composite properties. The experiments were conducted by alkalization process (10% NaOH) followed by acetylation with acetic acid glacial and acetic anhydride (CH3CO2)2with additions of 1 and 2 drops of 25% H2SO4. Fourier transform infra-red (FTIR) spectroscopy, field-emission scanning electron microscope (FE-SEM) and x-ray diffraction (XRD) were used to characterize the treated and untreated fibres. The results of investigation showed that the chemical treatments have effectively produced MFC with the smallest fibre size around 5.5 - 6.5 microns and reduced lignin and hemicellulose where the highest crystalline part up to 80.64% was obtained through acetate acid treatment of 17.4 M, followed acetic anhydride with 1 drop of H2SO4addition. Based on the current results, it is promising that the synthesized composites can be improved for their compatibilities.