硫酸盐法蒸煮过程中木素-聚木糖复合体化学结构的变化

范建云; 王　鹏; 谢益民*

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The Change of Chemical Structure of Lignin-xylan Complex in Kraft Pulping

DOI：10.11981/j.issn.1000-6842.2015.01.1

Key Words:the DHP-xylan complex；kraft pulping；lignin； 13C-NMR

Fund Project:国家自然科学基金(31370574,31300494)；湖北省教育厅青年人才项目(Q20131402)；湖北工业大学博士启动金项目(BSQD12037)。

Author Name	Affiliation
FAN Jian-yun	School of Pulp & Paper Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068
WANG Peng	School of Pulp & Paper Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 Hubei Provincial Key Lab of Green Materials for Light Industry, Hubei University of Technology, Wuhan, Hubei Province, 430068
XIE Yi-min*	School of Pulp & Paper Engineering, Hubei University of Technology, Wuhan, Hubei Province, 430068 Hubei Provincial Key Lab of Green Materials for Light Industry, Hubei University of Technology, Wuhan, Hubei Province, 430068

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Abstract:

The DHP-xylan complex(DHPXC) was synthesized by using lignin dehydrogenated polymer(DHP) and xylan as raw materials and cooked by kraft pulping method. The infrared spectra and 13C-NMR spectra were used to identify the chemical structure of the obtained complex and its degraded products after kraft pulping. The results indicated that there were a lot of xylan in the acid-insoluble substances. Xylan was linked with lignin by LCC linkage. There were certain amount of structures with double bonds and γ-CH2OH on side chains of lignin after cooking. The β-β was the main linkage between the structural units of residual lignin. There were also some β-5 and β-O-4 structures.

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