| 乙二胺预处理麦草浆在LiCl/DMSO体系中的溶解-再生性能 |
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| 引用本文： | 夏剑雨,刘祝兰,曹云峰,王志国.乙二胺预处理麦草浆在LiCl/DMSO体系中的溶解-再生性能[J].林产化学与工业,2016(3):101-106. |
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| 作者姓名： | 夏剑雨 刘祝兰 曹云峰 王志国 |
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| 作者单位： | 江苏省制浆造纸科学与技术重点实验室南京林业大学,江苏 南京,210037 |
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| 基金项目： | 江苏省制浆造纸科学与技术重点实验室(南京林业大学)开放基金(201504)；国家自然科学基金青年基金(31200444)；江苏省高校优势学科建设工程资助项目 |
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| 摘 要： | 利用8%Li Cl/DMSO木质纤维全溶体系,溶解经乙二胺溶液预处理后氧脱木质素碱法麦草浆,探讨乙二胺预处理对浆料性能的影响,及预处理后浆料在8%Li Cl/DMSO全溶体系中的溶解-再生性能。研究发现:乙二胺预处理在保留较高结晶度时可改变浆料结晶结构,氧脱木质素碱法麦草浆经乙二胺预处理后可完全溶解于8%Li Cl/DMSO溶液,随着木质素含量的增加,溶解所需时间延长;溶解后样品经水可再生,产物得率为59.19%~61.88%,溶解-再生过程中木质素、多糖、灰分和硅都得到较好保留。
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| 关 键 词： | 乙二胺 氯化锂/二甲基亚砜 木质纤维全溶体系 |
Dissolution-regeneration of Ethylenediamine Pretreated Wheat Straw Pulp in LiCl/DMSO |
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| Abstract: | Oxygen-delignified wheat straw soda pulp were pretreated by ethylenediamine ( EDA ) and then dissolved in 8%LiCl/DMSO solution system .The effects of ethylenediamine on the pulp properties and its dissolution-regeneration performance in LiCl/DMSO were studied .The results showed that the crystal structure of EDA pretreated pulp was altered but still had a high crystallinity .The EDA-pretreated wheat straw pulps could be completely dissolved in 8%LiCl/DMSO.With the increase of the lignin content , more time was required to form the homogeneous solution .The dissolved samples could be regenerated by being poured into water.The yields of the regenerated fractions were ranged from 59.19% to 61.88%.The lignin, polysaccharide, ash, and silicon were preserved well after the dissolution-regeneration. |
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| Keywords: | ethylenediamine(EDA) LiCl/DMSO lignocellulosic solvent |
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