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Issue 39, 2013
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Flexible hybrid aerogels prepared under subcritical conditions

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Abstract

A new flexible insulator was developed, consisting of a silica–latex-fiber nanocomposite aerogel that combines the lightness and insulating properties of silica aerogels with the mechanical properties of silica–latex hybrids and the flexibility of fibers. This was accomplished by coating selected insulating fibers (polyester and glass) with a silica–polymer hybrid aerogel, synthesized in situ by a two-step sol–gel process, consisting of the acidic co-hydrolysis of TEOS and trimethoxysilyl-grafted latex nanoparticles in excess water, followed by basic co-condensation. The hybrid coating has improved mechanical properties that allow its drying under subcritical conditions. The outstanding properties of the insulating blankets produced render them extremely attractive for high-technology applications, and, due to the low energy consumption process, they may even displace the commonly used mineral wool, by presenting a best value-for-money compromise.

Graphical abstract: Flexible hybrid aerogels prepared under subcritical conditions

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Publication details

The article was received on 21 Jun 2013, accepted on 31 Jul 2013 and first published on 02 Aug 2013


Article type: Paper
DOI: 10.1039/C3TA12431B
Citation: J. Mater. Chem. A, 2013,1, 12044-12052
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    Flexible hybrid aerogels prepared under subcritical conditions

    A. Fidalgo, J. P. S. Farinha, J. M. G. Martinho and L. M. Ilharco, J. Mater. Chem. A, 2013, 1, 12044
    DOI: 10.1039/C3TA12431B

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