| 草本类木素的化学结构与热化学性质 |
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| 引用本文： | 娄瑞,武书彬,吕高金,杨卿.草本类木素的化学结构与热化学性质[J].华南理工大学学报(自然科学版),2010,38(8). |
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| 作者姓名： | 娄瑞 武书彬 吕高金 杨卿 |
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| 作者单位： | 华南理工大学,制浆造纸工程国家重点实验室,广东,广州,510640 |
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| 基金项目： | 国家"973"计划项目，国家"863"计划项目，国家自然科学基金资助项目 |
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| 摘 要： | 以草本类植物中的稻草和毛竹为原料,采用酶解/温和酸解法来分离草本类木素,制得酶解/温和酸解木素(EMAL).运用元素分析、傅里叶变换红外光谱(FT-IR)和核磁共振定量磷谱(31P-NMR)等手段对两种EMAL的化学结构和性能进行表征,同时利用热重-傅里叶红外光谱联用(TG-FTIR)和热解-气相色谱/质谱联用(Py-GC/MS)技术研究EMAL的热裂解特性.发现:稻草的聚戊糖和抽出物含量较高,而毛竹的纤维素和木素含量较高;稻草EMAL含有丰富的愈创木基(G型)结构单元,毛竹EMAL主要以紫丁香基(S型)结构单元为主;毛竹EMAL在384℃出现一个明显的失重峰,而稻草EMAL热解时分别在270和384℃出现明显失重峰;两种木素化学结构的差异会影响EMAL的热解性质和热解产物.
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| 关 键 词： | 草本类植物 木素 热解 热化学 热重-傅里叶红外光谱联用 热解-气相色谱/质谱联用 |
Chemical Structure and Thermochemical Properties of Lignin from Herbaceous Plant |
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| Lou Rui,Wu Shu-bin,Lü Gao-jin,Yang Qing.Chemical Structure and Thermochemical Properties of Lignin from Herbaceous Plant[J].Journal of South China University of Technology(Natural Science Edition),2010,38(8). |
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| Authors: | Lou Rui Wu Shu-bin Lü Gao-jin Yang Qing |
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| Institution: | Lou Rui Wu Shu-bin Lü Gao-jin Yang Qing(State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China) |
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| Abstract: | Two representative herbaceous plants,namely,rice straw and bamboo,were selected as the materials to produce two kinds of enzymatic/mild acidolysis lignin(EMAL) by isolating lignin via an enzymatic/mild acidolysis process.Then,the chemical structure and properties of the products were characterized by means of elemental ana-lysis,FT-IR and quantitative 31P-NMR,and the pyrolysis characteristics of the products were investigated by means of TG-FTIR and Py-GC/MS.The results show that(1) rice straw contains more... |
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| Keywords: | herbaceous plant lignin pyrolysis thermochemistry TG-FTIR Py-GC/MS |
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