Results 21 to 30 of about 22,015 (273)

Controllable transport mean free path of light in xerogel matrixes embedded with polystyrene spheres [PDF]

open access: yes, 2008
Xerogel matrices, made by sol-gel techniques, are embedded with polystyrene spheres to promote multiple scattering of light. Varying the concentration of the spheres inside the matrix allows one to adjust the transport mean free path of light inside the ...
Boris P. Bret   +36 more
core   +2 more sources

Nanoporous Xerogel for Adsorption of Pb2+ and Cd2+ [PDF]

open access: yesJournal of Nanostructures, 2015
Classical xerogels are robust, inexpensive and nontoxic materials with low-ordered nanoporous structures. In water streams where the pH is higher than the Point of Zero Charge, the surface of classical xerogels such as tetraethoxy orthosilan (TEOS ...
F. B. Sarand   +3 more
doaj   +1 more source

Converting water adsorption and capillary condensation in useable forces with simple porous inorganic thin films [PDF]

open access: yes, 2016
This work reports an innovative humidity driven actuation concept based on Bangham effect using simple nanoporous sol-gel silica thin films as humidity responsive materials.
Boudot, Mickael   +2 more
core   +3 more sources

Influence of the synthesis conditions on the characteristics and metal adsorption properties of the 3-(1,4-phenylenediamine)propylsilica xerogel

open access: yesEclética Química, 2018
The hybrid 3-(1,4-phenylenediamine)propylsilica xerogel was obtained starting from two different organic precursor quantity (5 and 8 mmol) to 22 mmol of TEOS, in the synthesis.
J. C. P. Vaghetti   +4 more
doaj   +1 more source

Nanocellulose Xerogel as Template for Transparent, Thick, Flame-Retardant Polymer Nanocomposites

open access: yesNanomaterials, 2021
Cellulose nanofibers (CNFs) have excellent properties, such as high strength, high specific surface areas (SSA), and low coefficients of thermal expansion (CTE), making them a promising candidate for bio-based reinforcing fillers of polymers. A challenge
Wataru Sakuma   +3 more
doaj   +1 more source

Investigation of silica - PVA xerogel microstructure evolution during thermal treatment by SANS experiment [PDF]

open access: yes, 2004
The purpose of the study was to investigate the appearance of certain microstructures developing in the SiO2/PVA nanocomposite xerogels at different temperatures by small-angle neutron scattering (SANS). The samples were prepared by the alcoxide route of
Almásy, László   +3 more
core   +1 more source

Leaching of Atrazine in Commercial and Xerogel Formulations in Oxisol Using Bioassay and Chromatographic Methods [PDF]

open access: yesPlanta Daninha, 2015
Mobility of atrazine in soil has contributed to the detection of levels above the legal limit in surface water and groundwater in Europe and the United States.
E.D. Marchesan   +4 more
doaj   +2 more sources

Podoplanin immunopositive lymphatic vessels at the implant interface in a rat model of osteoporotic fractures [PDF]

open access: yes, 2013
Insertion of bone substitution materials accelerates healing of osteoporotic fractures. Biodegradable materials are preferred for application in osteoporotic patients to avoid a second surgery for implant replacement. Degraded implant fragments are often
Alt, Volker   +16 more
core   +2 more sources

Porosity in Polysilsesquioxane Xerogels [PDF]

open access: yesMRS Proceedings, 1999
ABSTRACTPolymerization of organotrialkoxysilanes is a convenient method for introducing organic functionality into hybrid organic-inorganic materials. However, not much is known about the effects of the organic substituent on the porosity of the resulting xerogels.
Loy, Douglas A.   +3 more
openaire   +1 more source

Xerogel-Sequestered Silanated Organochalcogenide Catalysts for Bromination with Hydrogen Peroxide and Sodium Bromide

open access: yesMolecules, 2015
While H2O2 is a powerful oxidant, decomposing into environmentally benign H2O and O2, a catalyst is often required for reactions with H2O2 to proceed at synthetically useful rates.
Caitlyn M. Gatley   +4 more
doaj   +1 more source

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