5. Using Silver nanoparticles:

A highly water-repellant coating made of silver nanoparticles that can be used to produce suits and other clothing items that offer superior resistance to dirt as well as water and require much less cleaning than conventional fabrics. Nano-Tex improves the water-repellent property of fabrics by creating nanowhiskers, which are made of hydrocarbons and have about 1/1000 of the size of a typical cotton fiber. They are added to the fabric to create a peach fuzz effect without lowering the strength of cotton.

(a)Untreated textile surface                  (b)Treated textile surface

The diagram shows that the two textile surface one which is treated with silver nano particles and other is not treated with silver nano particles.

The untreated surface having dust particles, when water droplets rolls over it do not get washed off because dust particles are adhere by textile surface. While treated textile surface do not adheres the dust particles hence when water particles rolls over it dust get washed off.

In fig. (b) Silver nano particles treated surface shows self cleaning property

6. Using chlorine halamine

The technology works by attaching chlorine-containing molecules called halamines to textile fibers. Chlorine in the form of halamines has powerful bacteria-killing properties, used for example to disinfect swimming pools. Unlike chlorine gas, there are no adverse effects since toxic chlorinated carbon atoms are not generated. By sticking halamines to the cellulose fibers in cotton, the bacteria-killing effect can be bonded to the material and used again and again. Eventually, the chlorine is used up but can be regenerated with a wash in chlorine bleach. The halamine-treated fabrics kill microorganisms almost instantly on contact, so these materials are best suited for medical uses such as uniforms, wipes, bedding and towels.

Photo catalytic degradation of odors compound:

 

A photo catalytic acrylic fiber SELFCLEAR yarn with higher-dimensional self-cleaning properties which had been exclusive with conventional photo catalytic fibers, and started recently sailing their product for manufacture of clothing, sportswear, uniforms, bedding, carpets, and daily goods. Because titanium oxide is applied into SELFCLEAR yarn, it has a higher self-cleaning activity with deodorant, antibiotic, and anti-soiling properties as well as excellent functional stability, as compared to fabrics using a conventional photo catalytic reaction. SELFCLEAR yarn has a multi-layer structure with micro voids tens of nanometers in diameter on the surface of the acrylic fiber, and that makes it a nanovoid structure creating a greater surface area .Because special nano-sized photo catalytic titanium oxide, one-tenth the size of conventional titanium oxide used for fibers, is used for SELFCLEAR yarn, it has a ten times greater surface With this synergistic function of double nano-technology, it can produce excellent effects on higher selfcleaning functions with deodorant, antibiotic and anti-soiling properties compared to fibers using conventional photocatalytic reactions