Open AccessPreparation and characterization of Salix Psammophila cellulose and Mic-cellulose under the pretreatment of two kinds of acid
Author(s) -
Yuan Zhong,
Kebing Wang,
Liu Yu-ling,
Wang Xue
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1605/1/012165
Subject(s) - cellulose , crystallinity , microcrystalline cellulose , nuclear chemistry , nitric acid , hydrochloric acid , chemistry , lignin , hydrolysis , acid hydrolysis , fourier transform infrared spectroscopy , materials science , organic chemistry , chemical engineering , crystallography , engineering
The pretreatment of salix psammophila (SP) with HNO 3 -ethanol and HC1-ethanol, followed by the treatment with sodium chlorite and KOH, were investigated to obtain SP cellulose. Microcrystalline cellulose was prepared by hydrochloric acid hydrolysis from cellulose treated with nitric acid. The cellulose was characterized by FTIR, XRD, TG, SEM and DSC. The yield of cellulose pretreated with nitric acid and hydrochloric acid were 38.89% and 35.14%, respectively. Infrared spectroscopy showed that lignin and hemicellulose were separated from the extracted cellulose. The SEM photos showed that the width of the extracted cellulose was 5.71 μm and 6.92 μm respectively. XRD analysis showed that the crystallinity of the two groups was 54.13% and 60.86%, respectively. TG analysis showed that the amount of residue showed an increasing trend, and the residual amount extracted from cellulose was 6.67% and 7.90% respectively. In the SEM image of microcrystalline cellulose, a slender structure with a crystallinity of 59.32% was proposed, which had better thermal stability than cellulose.