Levoglucosan, cellobiose and their acetates as model compounds for the thermally assisted hydrolysis and methylation of cellulose and cellulose acetate

被引：37

作者：

Schwarzinger, C ^{[1
]}

Tanczos, I ^{[1
]}

Schmidt, H ^{[1
]}

机构：

[1] Johannes Kepler Univ, Inst Chem Technol & Organ Mat, A-4040 Linz, Austria

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2002年 / 62卷 / 02期

关键词：

thermally assisted hydrolysis and methylation; THM; thermochemolysis; levoglucosan; cellobiose; cellulose; cellulose acetate; TMAH;

D O I：

10.1016/S0165-2370(01)00114-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Levoglucosan (1,6-anhydro-beta-D-glucopyranose), cellobiose (beta-D-glucopyranosyl-[1 --> 4]-D-glucopyranose), tri-O-acetyl-levoglucosan (1,6-anhydro-beta-D-glucopyranose-2,3,4-triacetate) and cellobiose octaacetate have been studied with regard to their suitability as model compounds for thermally assisted hydrolysis and methylation with tetramethylammonium hydroxide of cellulose and cellulose acetate. In addition, the results of analytical pyrolysis of methyl cellulose were compared with those of thermally assisted hydrolysis and methylation, to distinguish between products arising from alkaline hydrolysis and pyrolytic cleavage, respectively. Parameters such as surplus of tetramethylammonium hydroxide, water content prior to pyrolysis and pyrolysis temperature were varied to find the optimal thermochemolysis procedure for cellulosic samples. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：179 / 196

页数：18

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