Dissolution ability and rheological properties of different kinds of cellulose dissolved in NaOH/thiourea/urea aqueous solution

被引：0

作者：

Cheng Fengwei ^{[1
]}

Mang Shuai ^{[1
]}

Huang liqian ^{[1
]}

Li Faxue ^{[1
]}

Yu Jianyong ^{[1
]}

Gu Lixia ^{[1
]}

机构：

[1] Donghua Univ, Modern Text Inst, Shanghai 200051, Peoples R China

来源：

PROCEEDINGS OF THE 2007 INTERNATIONAL CONFERENCE ON ADVANCED FIBERS AND POLYMER MATERIALS VOLS 1 AND 2 | 2007年

关键词：

cellulose; NaOH/thiourea/urea; dissolution; rheological properties; gelation;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The novel aqueous solvent of cellulose which contains NaOH,thiourea and urea was discussed furtherly in this article At the temperature when long, needle-like crystals precipitated from the solvent, the dissolving of cellulose in the solvent was best. IR spectrum showed that the precipitated crystals were Thiourea itself, not others or their mixture. Dissolution of different kinds of pulps (cotton, wood, bamboo and rice straw) were observed under polarized optical microscope and highest soluble concentration of the pulps were 6.1%, 4.2%, 2.1% and 4.3% respectively. The rheological property of the clear cellulose solutions were studied by ARES. They exhibited very different viscosities, module characters and gelation temperatures.

引用

页码：163 / +

页数：2

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