Polarographically active structural fragments of lignin. II. Dimeric model compounds and lignins

被引：10

作者：

Evstigneyev, E ^{[1
]}

Shevchenko, S ^{[1
]}

Mayorova, H ^{[1
]}

Platonov, A ^{[1
]}

机构：

[1] St Petersburgh State Forest Tech Acad, Dept Wood Chem, St Petersburg 194021, Russia

来源：

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY | 2004年 / 24卷 / 03期

关键词：

polarographic activity; lignin; dimers; differential pulse polorography; cyclic voltammetry;

D O I：

10.1081/WCT-200038182

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Lignin model dimers representing all typical interunit linkages in lignin (beta-O-4, alpha-O-4, alpha-O-gamma, beta-5, 5-5, beta-beta, stilbene, enol ether) were characterized by differential pulse polarography (DPP) and cyclic voltammetry (CV) in DMSO. Polarographic activity was registered for alpha-(C=O)-beta-O-4 structures and conjugated double bonds in stilbene and enol ether structures. A structure-chemical reactivity correlation diagram is drawn based on the studies of one- and two-unit model structures of lignin. Peaks in differential pulse polarograms of lignin were assigned to certain functional groups and bond types based on the comparison between the data obtained on model compounds and selectively chemically modified [NaBH4, LiAlH4, CH2N2, (CH3O)(2)SO2] lignin samples.

引用

页码：263 / 278

页数：16

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