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Original Article | Open Access

Comparative Study of Isolated Polysaccharides from Triploid Poplar Using Different Solvents and Chemicals

YingYing Chai1, Ning Zhao1, YunShan Ju1, QingTao Fan2, Kun Wang1( )
Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
Beijing Institute of Science and Technology Information, Beijing 100044, China
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Abstract

The conversion of lignocellulose to value-added products is normally focused on fuel production; however, large-scale biorefineries require a cost-effective pretreatment process that can effectively fractionate the three main constituents of lignocellulose for the production of chemicals, fuels, and materials. In this study, a hemicellulosic biopolymer from poplar was fractionated by a mild organosolv process and the effects of various chemicals (sodium hydroxide, triethylamine, and formic acid) and alcohols on the fractionation efficiency and structural variation of hemicellulose were examined. Comparative studies indicated that an acidic catalyst decreased the purity of hemicelluloses by partial degradation of cellulose, and the core of the hemicellulosic biomacromolecule could be released and dissolved under alkaline conditions with 5.8%~19.0% yields. In addition, the use of alcohol with longer alkyl chains facilitated the release of the hemicellulosic biomacromolecule by partially cleaving the ether bonds in the lignin-carbohydrate complex (LCC); this is probably due to steric hindrance. The thermal degradation behavior showed that complete pyrolysis was easily achieved for the hemicellulosic polymer with minimal branches irrespective of its molecular weight.

Keywords

organosolv fractionationbiorefineryhemicelluloses, thermal property

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Paper and Biomaterials
Volume 4 Issue 1,
January 2019
Pages 7-16
DOI: 10.26599/PBM.2019.9260002
Cite this article:
Chai Y, Zhao N, Ju Y, et al. Comparative Study of Isolated Polysaccharides from Triploid Poplar Using Different Solvents and Chemicals. Paper and Biomaterials, 2019, 4(1): 7-16. https://doi.org/10.26599/PBM.2019.9260002

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Received: 28 August 2018
Accepted: 10 October 2018
Published: 01 January 2019
© 2019 Paper and Biomaterials Editorial Board

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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