Synthesis of cellulose carbamate by supercritical CO2-assisted impregnation:: Structure and rheological properties

被引：56

作者：

Yin, Cuiyu

Shen, Xinyuan ^{[1
]}

机构：

[1] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 200051, Peoples R China

[2] Heran Text Coll, Zhengzhou 450007, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2007年 / 43卷 / 05期

基金：

中国国家自然科学基金;

关键词：

cellulose carbamate; supercritical CO2-assisted impregnation; structure; rheological property;

D O I：

10.1016/j.eurpolymj.2007.01.041

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Cellulose carbamate, an environmentally friendly material presents an interesting alternative to petroleum-based polymers because of its renewable, biodegradable, biocompatible nature and its solubility in conventional solvents. In synthesis process of cellulose carbamate, urea was firstly impregnated into the cellulose pulp by supercritical CO2(SCCO2), followed by the esterification of cellulose. The structure of cellulose carbamate was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The rheological properties of these cellulose carbamates in 9% sodium hydroxide solution were investigated, using a range of the nitrogen content, concentrations and shear rates. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2111 / 2116

页数：6

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