Results 41 to 50 of about 16,112 (254)

Modeling the heat transfer by conduction of nanocellular polymers with bimodal cellular structures [PDF]

, 2019
Nanocellular polymers are a new generation of materials with the potential of being used as very efficient thermal insulators. It has been proved experimentally that these materials present the Knudsen effect, which strongly reduces the conductivity of ...
Bernardo García, Victoria, Martín de León, Judit, Pinto Sanz, Javier, Rodríguez Pérez, Miguel Ángel, Verdejo, Raquel   +4 more
core   +1 more source

Silica–alumina/sepiolite nanoarchitectures

Journal of Materials Chemistry A, 2013
Peer ...
Belver Aguilar, Carolina, Aranda, Pilar, Ruiz-Hitzky, Eduardo   +2 more
openaire   +2 more sources

Sintering behaviour of sepiolite

Ceramics International, 1997
Abstract Sepiolite containing minerals from various regions of Turkey were processed to investigate their sintering behaviour over a wide temperature range. The sintering was studied by mercury porosimetry and nitrogen adsorption (BET). Microstructural features were investigated using SEM and TEM techniques.
Goktas, AA, Misirli, Z, Baykara, T
openaire   +3 more sources

Geochemistry of As-, F- and B-bearing waters in and around San Antonio de los Cobres, Argentina, and implications for drinking and irrigation water quality [PDF]

, 2011
Spring, stream and tap waters from in and around San Antonio de los Cobres, Salta, Argentina, were sampled to characterize their geochemical signatures, and to determine whether they pose a threat to human health and crops.
Aiuppa, Ballantyne, Bennett, Berger, Blasco, Brookins, Carton, Concha, Concha, Concha, De la Fuente, De Sastre, De Vitre, Deer, Ellis, Fiorentino, Gupta, Hedenquist, Hem, Hudson-Edwards, Hudson-Edwards, Jain, Jane Archer, Karen A. Hudson-Edwards, Katsoyiannis, Langner, Leyshon, Lloyd, Maas, Mayayo, Meng, MRA-UGAN Minería de la República Argentina-Unidad de Gestión Ambiental Nacional, Mroczek, Munshower, Nordstrom, Parks, Pesce, Reutter, Rowe, Sainato, Smedley, USEPA, USEPA United States Environmental Protection Agency, Vahter, Vahter, Water Quality Guidelines, Webster, Webster, Welch, WHO, WHO, WHO, WHO, WHO World Health Organization, Wilkie, Yokoyama   +55 more
core   +1 more source

Poly(vinyl alcohol) nanocomposites with sepiolite and heat‐treated sepiolites

Journal of Applied Polymer Science, 2009
AbstractPoly(vinyl alcohol) (PVA) nanocomposites with pristine sepiolite and heat‐treated (HT) sepiolites were prepared by the method of solution dispersion. The measurements of XRD, FTIR, TEM, and AFM were used for the characterization of the nanocomposites.
Alkan, Mahir, Benlikaya, Ruhan
openaire   +4 more sources

A comparison between the effects of sepiolite and silica on mechanical properties and thermal stability of NR/EPDM blend

MATEC Web of Conferences, 2016
This study focused on improving the ablation properties and mechanical properties of natural rubber (NR)/ethylene propylene diene monomer (EPDM) blends by using two different commercial fillers: sepiolite and silica. The results showed that sepiolite and
Winya Nattawat, Hansupalak Nanthiya
doaj   +1 more source

Effect of acid treatment on the structure of sepiolite. [PDF]

, 2003
An ab initio determination of the structure of sepiolite after acid treatment (HCl 0.5 N for 24 h) was carried out using X-ray powder diffraction data. After acid treatment, the sections normal to the a and c axes presented discontinuities, ~2.25 Å wide,
López-Galindo, A., Martín-Ramos, J. D., Rey, F. del, Viseras, C., Yerba-Rodríguez, A.   +4 more
core   +1 more source

Cellular uptake pathways of sepiolite nanofibers and DNA transfection improvement

Scientific Reports, 2017
Sepiolite is a nanofibrous natural silicate that can be used as a nanocarrier because it can be naturally internalized into mammalian cells, due to its nano-size dimension.
Fidel Antonio Castro-Smirnov, Jeanne Ayache, Jean-Rémi Bertrand, Elodie Dardillac, Eric Le Cam, Olivier Piétrement, Pilar Aranda, Eduardo Ruiz-Hitzky, Bernard S. Lopez   +8 more
doaj   +1 more source

Controlling bentonite-based drilling mud properties using sepiolite nanoparticles

Petroleum Exploration and Development, 2016
Sepiolite nanoparticles were added to the bentonite-based drilling mud to control its properties, and the effects of sepiolite nanoparticles on rheological properties and filtration loss of the bentonite-based drilling mud at different temperature and ...
Needaa AL-MALKI, Peyman POURAFSHARY, Hamoud AL-HADRAMI, Jamil ABDO   +3 more
doaj   +1 more source

Obtaining High Temperature Stable Sepiolite via Optimization of Acid Treatment Conditions

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023
Acid treatment of sepiolite under different molarity of HCl at various times was studied to find the best acid treatment conditions for obtaining anhydrous sepiolite without structural folding and with fully open and empty channels.
İlknur Kara
doaj   +1 more source