Preparation of micro-fibrillated cellulose based on sugar palm ijuk (Arenga pinnata) fibres through partial acid hydrolysis

Innovation in Polymer Science and Technology 2016

材料科学;化学

Saputro, A.^1 ; Verawati, I.^1 ; Ramahdita, G.^1 ; Chalid, M.^1

Department of Metallurgy and Materials Engineering, Universitas Indonesia, Jalan Kampus Baru UI, Depok, Jawa Barat, Indonesia^1

关键词: Acid concentrations;    Field emission scanning electron microscopes;    Fourier transform infra reds;    Micro fibrillated cellulose;    Non-cellulosic constituents;    Partial acid hydrolysis;    Sulfuric acid hydrolysis;    Thermogravimetric analyzers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/223/1/012042/pdf
DOI  :  10.1088/1757-899X/223/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The aim of this study was to isolate and characterized micro-fibrillated cellulose (MFC) from sugar palm/ijuk fibre (Arenga pinnata) by partial sulfuric acid hydrolysis. Cellulose fibre was prepared by repeated treatments with 5 wt% sodium hydroxide 2 h at 80°C, followed by bleaching with 1.7 wt% sodium chlorite for 2 h at 80°C in acidic environment under stirring. MFC was prepared by partial hydrolysis with sulfuric acid in various concentrations (30, 40, 50, and 60 % for 45 min at 45 °C) under stirring. Fourier Transform Infrared, Field Emission Scanning Electron Microscope, Thermo Gravimetric Analyzer and X-ray Diffraction characterized cellulose fibre and MFC. FTIR measurements showed that alkaline and bleaching treatments were effective to remove non-cellulosic constituents such as wax, lignin and hemicellulose. FESEM observation revealed conversion into more clear surface and defibrillation of cellulosic fibre after pre-treatments. XRD measurement revealed increase in crystallinity after pre-treatments and acid hydrolysis from 54.4 to 87.8%. Thermal analysis showed that increasing acid concentration reduced thermal stability.