ALKALINE PULPING OF WOOD AND LIGNIN MODEL COMPOUNDS IN AQUEOUS DMSO

被引：6

作者：

DIMMEL, DR

SHEPARD, D

PERRY, LF

JOACHIMIDES, T

MCDONOUGH, TJ

MALCOLM, EW

机构：

[1] Inst of Paper Chemistry, Appleton,, WI, USA, Inst of Paper Chemistry, Appleton, WI, USA

来源：

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY | 1985年 / 5卷 / 02期

关键词：

LIGNIN - Chemistry - PULP MATERIALS - Wood;

D O I：

10.1080/02773818508085190

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 fragmentation studies done in alkaline aqueous DMSO exhibited a high degree of beta -aryl ether cleavage, a degree equal to that of a comparable soda/AQ system. Pulping studies with loblolly pine in aqueous DMSO demonstrated that DMSO accelerates delignification, but the quantities required appear impractical. Several lignin model compounds have been heated at 150 degree C with alkali in aqueous DMSO to give complex product mixtures containing oxidation, reduction, and methyl sulfide additon products. Low temperature reactions of DMSO and dimsyl anion with in situ generated quinonemethides afforded unique products. Reactions attributed to DMSO were not observed when an oxidized analog, dimethylsulfone, was substituted for the DMSO.

引用

页码：229 / 246

页数：18