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The Relation between the Rheological Properties of Gels and the Mechanical Properties of Their Corresponding Aerogels

1
Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106-7202, USA
2
Centre Catalá del Plástic, Universitat Politécnica de Catalunya, Barcelona Tech, C/Colom 114, 08222 Terrassa, Spain
*
Author to whom correspondence should be addressed.
Received: 7 March 2018 / Revised: 2 April 2018 / Accepted: 3 April 2018 / Published: 9 April 2018
(This article belongs to the Special Issue Aerogels 2018)
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Abstract

A series of low density, highly porous clay/poly(vinyl alcohol) composite aerogels, incorporating ammonium alginate, were fabricated via a convenient and eco-friendly freeze drying method. It is significant to understand rheological properties of precursor gels because they directly affect the form of aerogels and their processing behaviors. The introduction of ammonium alginate impacted the rheological properties of colloidal gels and improved the mechanical performance of the subject aerogels. The specific compositions and processing conditions applied to those colloidal gel systems brought about different aerogel morphologies, which in turn translated into the observed mechanical properties. The bridge between gel rheologies and aerogel structures are established in the present work. View Full-Text
Keywords: aerogel; rheology; mechanical properties aerogel; rheology; mechanical properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Sun, M.; Sun, H.; Wang, Y.; Sánchez-Soto, M.; Schiraldi, D.A. The Relation between the Rheological Properties of Gels and the Mechanical Properties of Their Corresponding Aerogels. Gels 2018, 4, 33.

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