Pickering emulsion strategy for high compressive carbon aerogel for use as insulation material and dual-mode pressure/magnetic sensor

Zhang, Chengqi; Liao, Daogui; Wang, Yanan; Xie, Peiying; Li, Mingxing; Zhou, Li; Chen, Yunhua; Liu, Hongxia

doi:10.1016/j.ceramint.2022.10.335

Cited by 8 publications

(1 citation statement)

References 33 publications

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“…In the search for efficient, environmentally friendly thermal insulation technology, Pickering emulsion-templated fabrication of silica aerogels has proven to be a promising alternative. − In fact, there have been some studies on the fabrication of aerogels by using Pickering emulsion templates, including carbon-based composite aerogels and syndiotactic polymer aerogels using commonly silica as a Pickering agent . There has also been research on cellulose-based aerogels, which shows an obvious gap in these studies that investigated hybrid cellulose–inorganic composites and aerogels combining noncellulosic polymers with inorganic silica.…”

Section: Introductionmentioning

confidence: 99%

Ultralight, Robust, Thermal Insulating Silica Nanolace Aerogels Derived from Pickering Emulsion Templates

Cho,

Sung,

Choi

et al. 2024

ACS Appl. Mater. Interfaces

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Synthesis of silica aerogel insulators with ultralight weight and strong mechanical properties using a simplified technique remains challenging for functional soft materials. This study introduces a promising method for the fabrication of mechanically reinforced ultralight silica aerogels by employing attractive silica nanolace (ASNLs)-armored Pickering emulsion templates. For this, silica nanolaces (SiNLs) are fabricated by surrounding a cellulose nanofiber with necklace-shaped silica nanospheres. In order to achieve amphiphilicity, which is crucial for the stabilization of oil-in-water Pickering emulsions, hydrophobic alkyl chains and hydrophilic amine groups are grafted onto the surface of SiNLs by silica coupling reactions. Freeze-drying of ASNLs-armored Pickering emulsions has established a new type of aerogel system. The ASNLs-supported mesoporous aerogel shows 3-fold greater compressive strength, 4-fold reduced heat transfer, and a swift heat dissipation profile compared to that of the bare ASNL aerogel. Additionally, the ASNL aerogel achieves an ultralow density of 8 mg cm −3 , attributed to the pore architecture generated from closely jammed emulsion drops. These results show the potential of the ASNL aerogel system, which is ultralight, mechanically stable, and thermally insulating and could be used in building services, energy-saving technologies, and the aerospace industry.

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