Results 31 to 40 of about 499,894 (252)
A silica aerogel-based thermal insulation composite film for metal surfaces in gas industries
Results in Surfaces and Interfaces, 2023 Silica aerogels are ultralight superinsulators that can increase the efficiency of insulation materials up to three times. In this study, hydrophobic silica aerogels were synthesized using an inexpensive and available water-glass precursor at ambient ...
Asma Zare, Hassan Hadadzadeh
doaj +1 more source
Reinforced silica-carbon nanotube monolithic aerogels synthesised by rapid controlled gelation [PDF]
, 2018 This work introduces a new synthesis procedure for obtaining homogeneous silica hybrid aerogels with carbon nanotube contents up to 2.50 wt.%. The inclusion of nanotubes in the highly porous silica matrix was performed by a two-step sol–gel process ...
Díaz-Fraile, José A. +8 more
core +2 more sources
Nitrogen sorption as a tool for the characterisation of polysaccharide aerogels [PDF]
, 2011 Supercritically dried aerogels of several polysaccharides (chitin, chitosan, alginate, alginic acid, k- carrageenan, and agar) have been characterised by physisorption ofN2. Surface areas as high as 570m2 g−1 have been measured.
Boissière, M. +7 more
core +3 more sources
Insights on toxicity, safe handling and disposal of silica aerogels and amorphous nanoparticles
Environmental Science: Nano, 2021 The toxicity and ecotoxicity effects, handling and disposal of synthetic amorphous silica nanoparticles and aerogels are reviewed and discussed.
J. Vareda +5 more
semanticscholar +1 more source
Biomedical applications of silica-based aerogels: a comprehensive review
Macromolecular Research, 2023 Silica-based aerogels are the appropriate and well-known porous materials that have become interesting in science and technology, especially in the biomedical community. Silica-based aerogels are prepared from silica gels where the liquid is drawn out of
Fatemeh Soghra Jahed +3 more
semanticscholar +1 more source
Dielectric Response of Silica Aerogels [PDF]
Defect and Diffusion Forum, 1987 The dielectric response of porous silica aerogel prepared by hypercritical drying of gels from hydrolysis of TMOS — Methanol solution have been measured between 1.6 K to 300 K and frequencies between 50 and 10 5 Hz. The ɛ' value of the porous gels is found practically constant between room temperature and 100K but smaller than of fused silica. A sharp
Da Silva, Adao A. +2 more
openaire +1 more source
SANS study of hybrid silica aerogels under "in situ" uniaxial compression [PDF]
, 2008 We have modified the inorganic silica network of aerogels with polydimethylsiloxane (PDMS), a hydroxyl-terminated polymer, to obtain an organic modified silicate (ORMOSIL). Reactions were assisted by high-power ultrasounds.
Esquivias Fedriani, Luis María +5 more
core +1 more source
Materials Research Express, 2021 In this work, superhydrophobic methyltrimethoxysilane (MTMS)-based silica aerogels were fabricated via water-based sol–gel reaction by ambient pressure drying (APD) method in the presence of surfactant.
Xiaoling Yuan +5 more
doaj +1 more source
Biological Thermal Performance of Organic and Inorganic Aerogels as Patches for Photothermal Therapy
Gels, 2022 Aerogels are materials with unique properties, among which are low density and thermal conductivity. They are also known for their exquisite biocompatibility and biodegradability.
Tânia Ferreira-Gonçalves +13 more
doaj +1 more source
Gels, 2015 The production of a new composite material embedding aramid honeycomb materials into nano-porous silica aerogels is studied. Our aim is to improve the poor mechanical strength of silica aerogels by aramid honeycombs without losing the amazing properties ...
Marina Schwan +3 more
doaj +1 more source