毛竹纤维在1-丁基-3-甲基咪唑氯盐/乙醇中的溶解特性研究

doi:10.3969/j.issn.0253-2417.2017.04.016

Abstract

Abstract: Bamboo fiber was pretreated by 1-butyl-3-methyl imidazole chloride salt([Bmim] Cl)/ethanol mixture solvent. The optimum conditions for the dissolution were as follows:volume ratio of[Bmim] Cl/ethanol of 5:12, deionized water content of 4% and reaction process at 160℃for 12 h. The bamboo fiber dissolution yield could reach 18.14%, with residual cellulose product yield of 81.84%. The chemical structure was confirmed by TG-DTG, FT-IR and XRD. The TG-DTG results showed that the ionic liquid had good thermal stability and did not decompose at 160℃ in this experiment. Meanwhile, XRD results revealed that the crystallinity index increased from 26.54% to 31.21%, exhibiting the typical cellulose I crystalline structure; FT-IR analysis showed that the structure of regenerated cellulose did not change significantly during the separation process.

Key words: ionic liquid, bamboo fibers, dissolution characteristics, mixture solvent

CLC Number:

TQ35

WANG Lanying, ZHUANG Junping, ZHOU Yanbin, WU Shubin. Dissolution Characteristics of Bamboo Fibers in 1-Butyl-3-methyl Imidazole Chloride Salt/Ethanol Mixture Solvent[J]. Chemistry and Industry of Forest Products, 2017, 37(4): 110-114.

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Dissolution Characteristics of Bamboo Fibers in 1-Butyl-3-methyl Imidazole Chloride Salt/Ethanol Mixture Solvent

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