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Exposed to sunlight, cotton fabric cleans itself
Friday December 16, 2011 08:20:47 AM,
IANS
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Washington: Scientists
from China are developing a cotton fabric that can clean itself of
stains and bugs when exposed to ordinary sunlight.
Environmental researchers Mingce Long and Deyong Wu, from Shanghai
Jiao Tong University and Hubei University for Nationalities,
China, say their fabric uses a coating made from a compound of
titanium dioxide, the white material used in white paint, foods
and sunscreen lotions.
Titanium dioxide breaks down dirt and kills microbes when exposed
to some type of light. It is used in self-cleaning windows,
kitchen and bathroom tiles, odour-free socks and other products,
the journal Applied Materials & Interfaces reported.
Self-cleaning cotton fabrics have been made in the past, but they
self-clean thoroughly only when exposed to ultraviolet rays.
A new cotton fabric has been developed that cleans itself when
exposed to ordinary sunlight, said a statement of the American
Chemical Society.
Their report describes cotton fabric coated with nanoparticles
made from a compound of titanium dioxide and nitrogen, said the
statement.
The report shows how the fabric coated with the material removes
an orange dye stain when exposed to sunlight. Dispersing the
nanoparticles composed of silver and iodine accelerates the
discoloration process. The coating remains intact after washing
and drying.
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