Synthesis and characterisation of nanofibrillar cellulose aerogels

被引：163

作者：

Hoepfner, Sandra ^{[1
]}

Ratke, Lorenz ^{[1
]}

Milow, Barbara ^{[1
]}

机构：

[1] DLR German Aerosp Ctr, Inst Mat Phys Weltraum, D-51147 Cologne, Germany

来源：

CELLULOSE | 2008年 / 15卷 / 01期

基金：

英国科研创新办公室;

关键词：

nanofibrillar cellulose; cellulose aerogel; cellulose cryogel; supercritical drying; freeze drying;

D O I：

10.1007/s10570-007-9146-8

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：

We prepared from cellulose fibres monolithic aero- and cryogels. Cellulose is dissolved in hydrated calciumthiocyanate melt, gelled, aged and dried by several methods. The density of cellulose aerogels produced by supercritical drying is in the range between 10 and 60 kg/m(3) with a surface area of 200-220 m(2)g. The cellulose cryogels produced by freeze drying exhibit a maximum surface area of 160 m(2)/g. Sputtered cellulose aero- and cryogels are examined with a scanning electron microscope. The results are discussed with respect to the literature and simple mathematical models.

引用

页码：121 / 129

页数：9

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