CHITOSANS CARRYING THE METHOXYPHENYL FUNCTIONS TYPICAL OF LIGNIN

被引：29

作者：

MUZZARELLI, RAA

ILARI, P

机构：

[1] Faculty of Medicine, University of Ancona

来源：

CARBOHYDRATE POLYMERS | 1994年 / 23卷 / 03期

关键词：

D O I：

10.1016/0144-8617(94)90097-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 [应用化学];

摘要：

Methoxyphenyl aldehydes vanillin, omicron-vanillin, syringaldehyde and veratraldehyde were found to react with chitosan under normal and reducing conditions and to impart insolubility and other characteristics to chitosan; for instance, omicron-vanillin yielded a bright yellow product exhibiting novel bands in the FTIR spectrum at 1630, 1460, 1250, 950 and 730 cm(-1), and peaks at 5.52 and 20.12 2 theta values in the X-ray diffractogram. The films obtained from veratraldehyde were insoluble, biodegradable and mechanically resistant. Suspensions of Kraft lignin and chitosan yielded very thick pastes within minutes upon addition of an organic acid and, upon drying at 50 degrees C, 3 mm thick sheets harder than plywood.

引用

页码：155 / 160

页数：6

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