Superhydrophobic and superhydrophilic surfaces: the way for self cleaning (INVITED) (Comunicazione a convegno)

Type
Label
  • Superhydrophobic and superhydrophilic surfaces: the way for self cleaning (INVITED) (Comunicazione a convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mariarosa Raimondo (2014)
    Superhydrophobic and superhydrophilic surfaces: the way for self cleaning (INVITED)
    in CIMTEC Conference, Montecatini Terme (Italy), 8-13 June 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mariarosa Raimondo (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ISTEC CNR (literal)
Titolo
  • Superhydrophobic and superhydrophilic surfaces: the way for self cleaning (INVITED) (literal)
Abstract
  • Recently self-cleaning has been increasingly considered as a key property of ceramic surfaces for indoor and outdoor exposure. One of the possible ways to provide materials of self-cleaning ability is to modulate their wettability - introducing hydrophilicity or hydrophobicity so creating a situation in which it becomes very difficult for dirt to adhere to them - and/or to promote their ability to decompose contaminants particles. The present lecture is an overview of the potentiality offered by nanotechnologies into the development of innovative surfaces by low-cost manufacturing processes, easily scalable for large areas. Examples of chemical and microstructural modifications at nano-scale of different typologies of ceramic surfaces are highlighted by deposition of optically transparent, inorganic, or hybrid organic/inorganic coatings with a controlled nanostructure and chemistry. The hydrophilic behaviour and the attitude to the degradation of contaminants were assessed according to the current ISO standard, while the repellence to water was related to contact angle, surface energy and inorganic/organic ratio of coatings' components. The main hindrances related to the production of industrial ceramic material, in terms of products and process parameters, have been reviewed as well the issues concerning the durability of functional performances over the time in working conditions. (literal)
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