Benefits and consequences of application of nano-technology in textile industry in terms of its impact on human health

1. Benefits and consequences of application of
nano-technology in textile industry in terms of its
impact on human health
İLKNUR ŞAHİN – 140130009
ORHAN OĞUZ DURGUN – 140130062
ERTAN URAK– 140130040

2. What’s NANOTECHNOLOGY ?
 At the National Nanotechnology Initiative (NNI), NT is
defined as the understanding, manipulation, and control of
matter at the above-stated length, such that the physical,
chemical, and biological properties of the materials
(individual atoms, molecules, and bulk matter) can be
engineered, synthesized, and altered to develop the next
generation of improved materials, devices, structures, and
systems.
 Nanotechnology (NT) deals with materials 1 to 100 nm in length.

3. Where can we use NT in textile ?
 It has numerous applications in almostevery major
industry, including textiles. There is a considerable
potential for profitable applications of NT in cottonand
other textile industries. Its application can
economically extend the properties, performance, and
hence valuesof textile processing and products.
 Improvements in Fiber/Yarn Manufacturing by using
Nanotechnology
 Fabric Finishing by using Nanotechnology

4. Physical and Chemical Properties
 NT at the molecular level can be used to develop desired textile characteristics,
such as high tensile strength, unique surface structure, soft hand, durability, water
repellency, fire retardancy, antimicrobial properties, and the like. Indeed, advances
in NT have created enormous opportunities and challenges for the textile industry,
including the cotton industry.
 Finishing of fabrics made of natural and synthetic fibers to achieve desirable hand,
surface texture, color, and other special aesthetic and functional properties, has
been a primary focus in textile manufacturing.

5. Physical and Chemical Properties
 Nanotechnology can provide highdurability for
fabrics, because nano-particles have a large
surface area-to-volume ratio and highsurface
energy, thus presenting better affinity for fabrics
and leading to an increase in durability of
thefunction. In addition, a coating of nano-
particles on fabrics will not affect their
breathability or handfeel.

6. Nano textiles and their materials

7. Nano textiles and their materials

8. HEALTH EFFECTS
 It appears to be emerging that
during theproduction process of
certain nanoparticle soccupational
exposure can have negative
effectson the health. However there
is currentlyfar too little data from
laboratory and animal tests to be
able to conduct a comprehensive
risk assessment.

9. UV-PROTECTION
 Inorganic UV blockers are more preferable
to organic UV blockers as they are non-toxic
and chemicallystable under exposure to
both high temperatures and UV. Inorganic
UV blockers are usually
certainsemiconductor oxides such as TiO2,
ZnO, SiO2 and Al2O3.

10. ANTI-BACTERIA
 Nano-silver particles have an extremely large relative surface
area, thus increasing their contact withbacteria or fungi, and
vastly improving their bactericidal and fungicidal
effectiveness. Nano-silver isvery reactive with proteins. When
contacting bacteria and fungus, it will adversely affect
cellularmetabolism and inhibit cell growth. It also suppresses
respiration, the basal metabolism of the electrontransfer
system, and the transport of the substrate into the microbial
cell membrane. Furthermore, it inhibits the multiplication and
growth of those bacteria and fungi which cause infection,
odour, itchinessand sores. Hence, nano-silver particles are
widely applied to socks in order to prohibit the growth
ofbacteria.

11. Nanosilver

12. DANGER OF HARM ?
 The extent to which nanoparticles woven into textiles may or
may not be harmful to consumers’ health is as yet unknown.
The release of nanoparticles from textiles as a result of use,
aging,abrasion etc. Can not be ruled out. Nevertheless, suitable
studies are absent to clarify the exposure as well as the possible
hazard potential.

13. What’s the path?

14. Toxic Potential of Nanomaterials
 The increased surface area and small size of
nanomaterials could be responsible for
toxicological effects because of the increased
surface groups that may function as reactive
active sites. For example, some ENM
cangenerate reactive oxygen species (ROS),
and ROS generation can be proportional
tosurface area.

15. Toxicity of nanomaterials
 Thomas Stegmaier, responsible for research and
development in technical textiles, notes that generalizing
statements of toxicity on nanomaterials may be
impossible because not all nanoparticles have the same
physical and chemical characteristics.
 Stegmaier also notes that routes of nanoparticles
exposure, such as “inhalative, dermal, oral, overthe eye,”
should be considered to determine whichis “most
relevant” in terms of exposure risk.
 Nanoparticles then can be transported to many areasof
the body through blood circulation.

16. Effects on human body
 Some research says that nanoparticles are easily
absorbed through skin tissue. Once the nanoparticles on
a fabric are absorbed into a consumer’s skin, nothing
keeps them from going elsewhere in the body.
 According to a recent review on neurotoxicity of silver,
most animal studies indicate that after silver exposure
silver was contained within the blood brain barrier but
did not pass it.
 The benefits of nanoparticles have been shown in several
scientific fields, but little is known about their potential
to penetrate the skin.

17. Environmental Safety
 If we accept that human beings are relatively safefrom
nanotechnology, does that mean everythingelse is?
 The nanoparticles now used in nanofinishesfor textiles
include silicon dioxide, silver, and titaniumdioxide: these
substances are all already found innature on the
nanoscale. People are already exposed to these substances
on the nanoscale.
 Volcano fumes, candle smoke,or any carbon-burning
substance, are all sources ofnanoparticles.
 Although there may be low hazard from common
nanomaterials a risk assessment still needs information
about the exposure of workers or consumers these
nanomaterials.

18. THANK YOU FOR LISTENING 
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