nanotechnology in textile

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Nanotechnology and smart textiles:

Nanotechnology and smart textiles Presented by: Mahpara Aslam

nanotechnology:

nanotechnology The design, characterization, production and application of structures, devices and systems by controlling shape and size of building blocks at the nanometer scale is called nanotechnology Nanoscale: 1nm= 10 -9 m

PowerPoint Presentation:

Nano fabric is formed by applying commercially available nano-engineered finishing treatments to ordinary textiles . The region of great interest in textile is 0.2-100 nanometer scale.

Textile Applications of Nano Technology are :

Textile Applications of Nano Technology are

Different structures of nanoparticles used in textile industry::

Different structures of nanoparticles used in textile industry:

Nanowhiskers: :

Nanowhiskers: ten nanometers long made out of hydrocarbons. they are so small and so close together, they form a sort of barrier around each fiber of the cloth that prevents liquids and other substances from even touching the actual fabric. The nano fibers cannot be seen or felt on the cloth, so it feels as soft as any untreated cloth.

procedure to attach the nanowhiskers to fibers:

procedure to attach the nanowhiskers to fibers Firstly the fabric is dipped in a tank of water full of billions of these tiny nanowhisker structures. then heated to evaporate the water, causing the fabric to bond to each cloth fiber. The nanowhiskers form a permanent chemical bond with the cylindrical cotton fibers. Textile aesthetics, such as color and hand, are not affected by this bonding process.

Value addition due to Nano Whiskers… :

Value addition due to Nano Whiskers… Water and oil repellency Superior durability Breathable Fabric Wrinkle resistance odour resistance

Water and oil repellency….. :

Water and oil repellency….. . Nanowhiskers make the fabric dense, increasing the surface tension so drops of liquid can't soak through fabric. However, liquid can still pass through the fabric, if pressure is applied. Nanowhiskers act like “the fuzz on a kiwi” and create a cushion of air around the fabric, causing the liquid to bead and roll off.

Water and oil repellency…..:

Water and oil repellency….. this Nano-Care treatment will withstand 50 home launderings before its effectiveness is lost.  Cellulose Nano-whiskers used for water repellency.

Wrinkle resistant:

Wrinkle resistant Heat and water cause wrinkles. Heat breaks the bonds holding polymers in place within the fibers of a fabric. so they can shift into new positions. As the fabric cools, new bonds formed.

Odour resistant::

Odour resistant: As human body-odor molecules pass through fabrics, open whisker ends "grab" and perform a chemical neutralization reaction with odor-causing acids Molecules are neutralized when they're bonded to the fabric. Silver nanopaticles can also destroy the bacteria and gives a odour resistant property.

Nano net::

Nano net: Three dimensional nanostructure which covers the molecule ( syntheic fibers) completely. It forms a spiral structure throughout the whole fabric

Value addition due to Nano Net… :

Value addition due to Nano Net… covers the core fibers and inject linen property in synthetic fibers Wicks body moisture fast Dries quickly & gives the cooling effect.

Nano wrap: :

Nano wrap: Wrap Nano sheet wraps the fiber completely to cover it & alter its property.

Nano wraps can enhance the:

Nano wraps can enhance the Strength and Durability. Improvement in colorfastness. Crease retention. Static resistance.

Static resistance.:

Static resistance . Static charge usually builds up in synthetic fibers such as nylon and polyester Cellulosic fibers have higher moisture content to carry away static charges It was determined that nano-sized titanium dioxide, zinc oxide whiskers, nano antimony-doped tin oxide and silane nano sol could impart anti-static properties to synthetic fibers. because they are electrically conductive materials.

Nanopores: :

It covers the whole fabric and left nano size pore over the surface of fabrics. Nanopores providing superior insulation for shoe inserts in cold weather. Nanopores :

Some Magical Nano Particles… :

Some Magical Nano Particles… Clay Nano Particles ZnO Nano Particles TiO 2 Nano Particles MgO Nano Particles Silver Nano Particles Fe Nano Particles Ceramic Nano Particles

Nano finishing vs. conventional finishing:

Nano finishing vs. conventional finishing Make chemical bonding with fibers. Enhance durability and strength of the fiber. Not even wear away on washing. Large abrasion resistance. Breathable Colorfastness Manufactured by using nanoparticles . Coated on the fibers. Decrease the strength of fiber. Wear away with time and on washing Very low abrasion resistance, Dec in breathability. Color roughness manufactured b y using various perflouro aliphatic compounds and waxes Nano finishing Conventional finishing

Future revolutions of nanotechnology in textile field:

Future revolutions of nanotechnology in textile field Piezoelectric fibers that could allow clothing to generate electricity  through normal motions . phase-change fabrics. responding to changing body temperatures, These materials store, release or absorb heat as they oscillate between solid and liquid form

Contd……..:

Contd…….. bullet proof clothing shark-skin suit worn during world-record breaking Olympic swimming championship. The suit, which includes a plasma layer enhanced by nanotechnology to repel water molecules, is designed to help the swimmer glide through the water as electrical insulating fabrics. A sensor system for cut-protection clothing will now available that will make working with power tools safer and more comfortable. In future you will be able to buy jackets that are wired up to monitor your body temperature and also listen to your inbuilt mp3 player.  The military has a vest for soldiers in combat where it is directly connected with the Internet and computers so if a soldier gets shot, information is given about where he was shot and what kind of injury it is. It is communicated with a physical computer in a hospital.

Risk Summary: :

Risk Summary: There are two types of risks arises due to the use of nanotechnology Ecological Risks Health Risks due to the release of the particles, their toxicity, and the fate and transport of the particles during wash and use. For example, a nanosilver textile coating had to be registered with the EPA as a pesticide because of the harmful effects of silver nanoparticles on biological organisms. So before the use of nano particles in textiles there must be a great research on the properties which can cause health and environmental risks.