Isolation of Cellulose from Wheat Straw and Its Utilization for the Preparation of Carboxymethyl Cellulose 


Vol. 20,  No. 5, pp. 975-981, May  2019
10.1007/s12221-019-7717-6


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  Abstract

Cellulose was isolated from wheat straw by the combined pretreatment including dilute acid hydrolysis, ethanol extraction, and alkaline H2O2 delignification. The effects of varying the parameters on carboxymethylation on isolated cellulose were investigated. Furthermore, the chemical structure of carboxymethyl cellulose (CMC) prepared from wheat straw was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscope analysis. The isolated cellulose is mainly composed of cellulose without hemicellulose and with minors of lignin and ash. The optimal conditions for carboxymethylation were base concentration, 20 %; reaction temperature, 70 oC; reaction time, 2 h; mass ratio of etherifying agent to cellulose, 1.75. Under the optimized conditions, CMC with high degree of substitution (0.88) and low viscosity (18 mPa

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  Cite this article

[IEEE Style]

H. Li, H. Zhang, L. Xiong, X. Chen, C. Wang, C. Huang, X. Chen, "Isolation of Cellulose from Wheat Straw and Its Utilization for the Preparation of Carboxymethyl Cellulose," Fibers and Polymers, vol. 20, no. 5, pp. 975-981, 2019. DOI: 10.1007/s12221-019-7717-6.

[ACM Style]

Hailong Li, Hairong Zhang, Lian Xiong, Xuefang Chen, Can Wang, Chao Huang, and Xinde Chen. 2019. Isolation of Cellulose from Wheat Straw and Its Utilization for the Preparation of Carboxymethyl Cellulose. Fibers and Polymers, 20, 5, (2019), 975-981. DOI: 10.1007/s12221-019-7717-6.