The effects of physical and chemical interactions in the formation of cellulose aerogels

Aerogels are low density materials which are produced from wet gels, and find a variety of potential uses. The relative importance of shape/geometry and self-association of the starting materials for the production of aerogels is studied herein. Aerogels were produced from microcrystalline cellulose...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2010-12, Vol.65 (9), p.951-960
Main Authors: Surapolchai, Warut, Schiraldi, David A.
Format: Article
Language:English
Subjects:
Aerogels
Applied sciences
Aspect ratio
Carboxymethyl cellulose
Cellulose
Cellulose and derivatives
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Crystalline cellulose
Exact sciences and technology
Low density materials
Mechanical properties
Natural polymers
Organic Chemistry
Original Paper
Physical Chemistry
Physicochemistry of polymers
Polymer Sciences
Polymers
Porous materials
Soft and Granular Matter
Solvents
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Summary:Aerogels are low density materials which are produced from wet gels, and find a variety of potential uses. The relative importance of shape/geometry and self-association of the starting materials for the production of aerogels is studied herein. Aerogels were produced from microcrystalline cellulose (MCC) and its functionalized analog, carboxymethyl cellulose (CMC). With increasing functionalization, CMC gains the potential for self-association, differentiating itself from MCC. The present study explores the preparation of aerogels from MCC and CMC, comparing performance with and without significant self-association potential, and more broadly evaluating the production of low density structural materials from renewable cellulose. It was observed that the self-association present in CMC substantially increases aerogel mechanical properties when compared those of non-interactive MCC. Aspect ratio is proposed to also be an import parameter in the structure–property relationship for these materials.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-010-0306-x