Hydrothermal treatments on expanded volcanic glasses (perlites) were studied. The main objective of this paper is to obtain an activated surface able to interact with specific chemical substances. The above mentioned treatment consists on exposing the glass surface to water vapor at temperatures over 250°C at the correspondent vapor pressure during different periods of time and for different size of particles. The glass surface modifications were studied by IR, DTA-TG and adsorption techniques. The grade of surface activation was tested by studying the chemical interaction with polysiloxane polymers.Fil: Abalos, Raúl Mauro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto d...
International audienceThe incidence of thermal treatments in air, N-2 or NH3, on the mechanical prop...
Dacitic lava recovered from the immediate subsurface of the submarine PACMANUS hydrothermal vent fie...
Natural waters mainly obtain their chemical composition through chemical reactions with the surround...
Structures formed with ground perlite, a natural volcanic glass, activated with NaOH solutions, are ...
International audienceExtreme conditions encountered in some geological contexts (deep serpentinizat...
Perlite is volcanic glass mainly composed of amorphous aluminum silicate, mainly composed SiO2 and A...
International audiencen silicate glasses and melts, water acts according to two main processes. Firs...
The effect of four commonly consumed beverages as mineral water, coffee, tea and mate tea on the ele...
A synthetic glass of a basaltic composition was weathered at 90° C, on one hand in freshwater, and o...
Experimental laboratory tests were performed using volcanic glasses from Argentina of variable chemi...
A number of heterogeneous reactions of atmospheric importance occur in thin water films on surfaces ...
Volcanic glasses are an amorphous phyllosilicates formed by the fast cooling of the magma. The physi...
The work described in this chapter is to investigate the concentration of hydroxyl groups on glass s...
We report for the first time a study on non‐contact thermal poling of soda lime silicate glasses usi...
The physico-mechanical, chemical and mineralogical characteristics of volcanic glass (perlite) from ...
International audienceThe incidence of thermal treatments in air, N-2 or NH3, on the mechanical prop...
Dacitic lava recovered from the immediate subsurface of the submarine PACMANUS hydrothermal vent fie...
Natural waters mainly obtain their chemical composition through chemical reactions with the surround...
Structures formed with ground perlite, a natural volcanic glass, activated with NaOH solutions, are ...
International audienceExtreme conditions encountered in some geological contexts (deep serpentinizat...
Perlite is volcanic glass mainly composed of amorphous aluminum silicate, mainly composed SiO2 and A...
International audiencen silicate glasses and melts, water acts according to two main processes. Firs...
The effect of four commonly consumed beverages as mineral water, coffee, tea and mate tea on the ele...
A synthetic glass of a basaltic composition was weathered at 90° C, on one hand in freshwater, and o...
Experimental laboratory tests were performed using volcanic glasses from Argentina of variable chemi...
A number of heterogeneous reactions of atmospheric importance occur in thin water films on surfaces ...
Volcanic glasses are an amorphous phyllosilicates formed by the fast cooling of the magma. The physi...
The work described in this chapter is to investigate the concentration of hydroxyl groups on glass s...
We report for the first time a study on non‐contact thermal poling of soda lime silicate glasses usi...
The physico-mechanical, chemical and mineralogical characteristics of volcanic glass (perlite) from ...
International audienceThe incidence of thermal treatments in air, N-2 or NH3, on the mechanical prop...
Dacitic lava recovered from the immediate subsurface of the submarine PACMANUS hydrothermal vent fie...
Natural waters mainly obtain their chemical composition through chemical reactions with the surround...