| 球磨杠柳木质素化学结构特性 |
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| 引用本文： | 赵欣,李树材. 球磨杠柳木质素化学结构特性[J]. 东北林业大学学报, 2009, 37(5) |
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| 作者姓名： | 赵欣 李树材 |
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| 作者单位： | 天津科技大学,天津,300457 |
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| 基金项目： | 黑龙江省新世纪优秀人才支持计划项目，黑龙江省高校青年学术骨干支持计划项目 |
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| 摘 要： | 对球磨的杠柳(Periploca sepium)采用含有0.05mol/L HCl的80%液体二氧六环在85℃处理4h、二甲基亚砜在85℃处理4h,以及8% NaOH在50℃处理3h,得到86%的原本木质素.采用FTIR、UV、液态1H和13C-NMR研究了酸性二氧六环、二甲基亚砜和碱溶性木质素组分的结构特征.结果表明:温和条件下,球磨与酸水解对分离的木质素大分子结构破坏不大.其中,温和酸水解使半纤维素和木质素之间醚键发生显著断裂,并使半纤维素发生部分降解.由于酸性二氧六环溶解的木质素主要来自初生壁,而碱溶性木质素主要来自次生壁,导致酸性二氧六环溶解的木质素与二甲基亚砜和碱溶性木质素结构不同.
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| 关 键 词： | 杠柳(Periploca sepium) 球磨 温和酸水解 木质素 |
Chemical Structure of Lignin from Ball-milled Periploca sepium |
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| Zhao Xin,Li Shucai. Chemical Structure of Lignin from Ball-milled Periploca sepium[J]. Journal of Northeast Forestry University, 2009, 37(5) |
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| Authors: | Zhao Xin Li Shucai |
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| Affiliation: | Zhao Xin,Li Shucai(College of Materials , Chemical Engineering,Tianjin University of Science & Technology,Tianjin 300457,P.R.China) |
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| Abstract: | A total release of over 86 percent of original lignin from the mild ball-milled Periploca sepium was obtained after sequential treatments with 80% aqueous dioxane containing 0.05 mols per liter HCl at 85 degrees C for 4 hours,dimethyl sulfoxide(DMSO)at 85 degrees C for 4 hours,and 8 percent NaOH at 50 degrees C for 3 hours.The structures of the acidic dioxane-,DMSO-,and alkali-soluble lignin fractions were analysed using FTIR,UV,solution-state 1H and 13C NMR techniques.Results showed that both the mild ball... |
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| Keywords: | 1HNMR 13C NMR |
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