New flexible aerogels and xerogels derived from methyltrimethoxysilane/dimethyldimethoxysilane co-precursors

Gen Hayase; Kazuyoshi Kanamori; Kazuki Nakanishi

doi:10.1039/C1JM13664J

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Journal of Materials Chemistry

Issue 43, 2011

Journal of Materials Chemistry was published between 1991 and 2012. From issue 1, 2013, it was replaced by three new journals: Journal of Materials Chemistry A, B and C

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New flexible aerogels and xerogels derived from methyltrimethoxysilane/dimethyldimethoxysilane co-precursors

Gen Hayase,^a Kazuyoshi Kanamori*^a and Kazuki Nakanishi^a

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Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto, Japan
E-mail: kanamori@kuchem.kyoto-u.ac.jp ;
Fax: +8175 7537673 ;
Tel: +8175 753 767

J. Mater. Chem., 2011,21, 17077-17079

DOI: 10.1039/C1JM13664J
Received 01 Aug 2011, Accepted 30 Aug 2011
First published online 30 Sep 2011

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Abstract
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We report new flexible “marshmallow-like” aerogels and xerogels with a bendable feature from the methyltrimethoxysilane (MTMS) and dimethyldimethoxysilane (DMDMS) co-precursor systems. A 2-step acid/base sol–gel process and surfactant are employed to control the phase separation of the hydrophobic networks, which give porous monolithic gels. The obtained gels become softer and more flexible with increasing DMDMS fractions.