Preparation and characterization of super microcrystalline from Pineapple leaf fiber

Pineapple leaf fiber was pretreated by sodium hydroxide, Nitric acid, Hydrochloric acid and hydrolyzed by 64% Sulfuric acid, super microcrystalline cellulose was gotten.The structure and properties of microcrystalline cellulose was characterized by Scanning electron microscopy ( SEM) , Transmission electron microscopy ( TEM) , Zeta potential and particle size analyzer、Fourier transform infrared chromatography ( FTIR) and X- ray diffraction ( XRD) .The results showed that the length and diameter distribution of super microcrystalline cellulose was 300⁷00nm and 20⁵0nm.The type of super microcrystalline cellulose was cellulose I, degree of crystallization was rised from 57.8% to 82.7%.