NDLI: Cellulose gel and aerogel from LiCl/DMSO solution

Content Provider	Springer Nature Link
Author	Wang, Zhiguo Liu, Shilin Matsumoto, Yuji Kuga, Shigeri
Copyright Year	2012
Abstract	Recently-discovered lignocellulosic solvent, 8%(w/w) lithium chloride/dimethyl sulfoxide (LiCl/DMSO), was found to dissolve cellulose of varied crystal forms and degree of polymerization. Cellulose samples could be activated for dissolution by complexation with ethylenediamine (EDA), giving EDA contents of 20–23% (w/w) in the complex irrespective of the cellulose type. The cellulose solution gave well-resolved 13C NMR spectrum, confirming molecular dispersion. Cellulose could be coagulated by ethanol to give translucent cellulose gels, which could be converted to highly porous aerogels via solvent exchange drying. Nitrogen adsorption analysis gave their specific surface areas of 190–213 m2/g, with typical mesopore sizes of 10–60 nm. Scanning electron microscopy revealed the network structure of aerogel composed of relatively straight fibril segments, approx. 20 nm wide and 100–1,000 nm long. X-ray diffraction showed that the material is poorly crystalline cellulose II.
Starting Page	393
Ending Page	399
Page Count	7
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	19
Issue Number	2
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-01-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cellulose solvent Lithium chloride/dimethyl sulfoxide (LiCl/DMSO) Cellulose hydrogel Cellulose aerogel Polymer Sciences Bioorganic Chemistry Organic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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