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Title: Versatile Double-Cross-Linking Approach to Transparent, Machinable, Supercompressible, Highly Bendable Aerogel Thermal Superinsulators
Authors: Zu, Guoqing
Kanamori, Kazuyoshi  kyouindb  KAKEN_id  orcid (unconfirmed)
Shimizu, Taiyo
Zhu, Yang
Maeno, Ayaka
Kaji, Hironori  kyouindb  KAKEN_id  orcid (unconfirmed)
Nakanishi, Kazuki  kyouindb  KAKEN_id  orcid (unconfirmed)
Shen, Jun
Author's alias: 祖, 国慶
金森, 主祥
前野, 綾香
梶, 弘典
中西, 和樹
Keywords: organic-inorganic hybrid
Issue Date: 2018
Publisher: American Chemical Society (ACS)
Journal title: Chemistry of Materials
Volume: 30
Issue: 8
Start page: 2759
End page: 2770
Abstract: A facile yet versatile approach to transparent, highly flexible, machinable, superinsulating organic-inorganic hybrid aerogels and xerogels is presented. This method involves radical polymerization of a single alkenylalkoxysilane to obtain polyalkenylalkoxysilane, and subsequent hydrolytic polycondensation to afford a homogeneous, doubly cross-linked nanostructure consisting of polysiloxanes and hydrocarbon polymer units. Here we demonstrate that novel aerogels based on polyvinylpolysilsesquioxane (PVPSQ), polyallylpolysilsesquioxane (PAPSQ), polyvinylpolymethylsiloxane (PVPMS), and polyallylpolymethylsiloxane (PAPMS) are facilely prepared via this approach from vinyltrimethoxysilane (VTMS, or vinyltriethoxysilane VTES), allyltrimethoxysilane (ATMS, or allyltriethoxysilane ATES), vinylmethyldimethoxysilane (VMDMS), and allylmethyldimethoxysilane (AMDMS), respectively. These aerogels combine low density, uniform nanopores, high transparency, super-compressibility, high bendability, excellent machinability, and thermal superinsulation (λ=14.5-16.4 mW m−1 K−1). More importantly, transparent, superflexible, superinsulating aerogel-like xerogels are obtained with PVPMS and PAPMS via highly scalable ambient pressure drying without any solvent exchange and modifications for the first time. This work will open a new way to transparent, highly flexible porous materials promising in the practical applications of thermal superinsulators, adsorbents, sensors, etc.
Description: The title of the Submitted Work is 'A Versatile Double-Cross-Linking Approach to Transparent, Machinable, Super-Compressible, Highly Bendable Aerogel and Xerogel Thermal Superinsulators'
Rights: This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Chemistry of Materials, copyright © American Chemical Society after peer review. To access the final edited and published work, see
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1021/acs.chemmater.8b00563
Appears in Collections:Journal Articles

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