Dear All,
Today I am going to share with all of you, a technology which is related with textile fabric finishing. This technic use mainly in woven fabric finishing.
FUNCTIONAL FINISHING
The Nano finish originally named as Nano Care
T, and marketed by Nano-Tex
Today I am going to share with all of you, a technology which is related with textile fabric finishing. This technic use mainly in woven fabric finishing.
Nano-Care
A technology that brings
about an entirely carefree fabric with wrinkle resistant, shrink proof, water
and stain repellent properties, intended for use in cellulosic fibers such as
cotton and linen.
It is a next-generation,
ease-of-care, dimension-stabilizing finish, one step ahead of methods that
simply give wrinkle resistance and shrink-proofing.
Nano-Care withstands more
than 50 home launderings.
It imparts water repellency
and stain resistance superior to those of conventional methods, maintaining
high water and oil repellency levels (80 and 4) even after 20 home
washes.
Features
• Superior Stain, Water and
Oil Repellency
• Resists Wrinkles
• Breathable Fabric
• Preserves Original
Hand
• Easy Care
Techno-science recently
introduced some Nano finishes for textile substrates has been reviewed here.
The logic of using low molecular weight fiber-reactive fluorocarbons that from
the basics of Nano-Care finish durable hydrophobic characteristic to fabrics.
And mechanisms proposed to explain the photo-catalytic self-cleaning effect of
TiO2 have been described.
Developments in the
production and evaluation of Nano silver and wound care devices based on anti
microbial activity of silver have been covered in detail. Anti pollen finish by
using the polymer which have antistatic or electro conductive composition,
flame retardant finish by using colloidal antimony pent oxide, Odour fight
finish by using tourmaline, UV protection finish by using Nano clay particles,
Self cleaning suits by using film polymer mixed with silver Nano particles and
characteristics of Nano finishing in Garments have been described.
The
application of ultra fine particles, produced using Nano technology, in textile
finishing is fast growing.
These application, are aimed at imparting multi
functional properties such as ultra violet resistant, anti bacterial, moisture
control to apparel products, made from natural fibers including, cotton, wool,
silk and also synthetic fibers such as polyester and nylon. These
multifunctional properties are achieved through changing fabric at molecular
level by Nano technology process.
Unstainable apparels based on Nano
technology are becoming widely popular.
The Nano technology finish creates care
free fabrics that minimize stains, superior liquid repellency and provide
wrinkle resistance. These enhanced fabric allow water and oil spills to easily
bead and roll of the fabric without penetrating the fibers and maintain in the
fabric throughout the life of the garment.
EASY CARE HYDROPHOBIC NANO
FINISH
Hydrophobic surface can be produced mainly in 2 ways.
1. By creating
rough structure on a hydrophobic surface.
2. By modifying a rough surface
using materials with low surface free energy.
Both these approaches have been
used to give a hydrophobic finish to textile substrates.
Fluorocarbon finishes
constitute an important class of hydrophobic finishes. These finishes first
applied to textile in the 1965 to impart water and oil
repellency.
Fluorocarbons are a class of organic chemicals that contain a
perfluoroalkyl residue in which all the hydrogen atoms have been replaced by
Fluorine. These chemicals have very high thermal stability and low reactivity.
They considerably reduce the surface tension.
Fluorocarbon finishes are
dispersions of perfluorinated acrylates having co-monomers.
In the
fluorocarbon finishes, the critical surface tension depends on the chain length
of fluorinated side chain and is minimum for chain length of n=9. The effect of
the chain length on the oil and water repellency is shown in table bellow.
The attached multifunctional
molecule can impart wrinkle resistance by Cross- linking cellulose chains by
maleic anhydride residues and also impart Water-repellency, crease-repellency,
soil resistance, detergent free washing, Increased speed of drying, improved
strength and abrasion resistance without affecting its air permeability or
breathability
The durability of the
finish is much better than the conventional fluorocarbon acrylate polymers
based finish.
(Collected and Edited)
-----------
Best Regards
Enamul Haque Bipul
Managing Director
Textillery Ltd.
Mob: +8801717264756; Skype: bipul1984
826, Bangabondhu Sharok, Tangabari, Ashulia, Savar,
Dhaka-1341, Bangladesh
No comments:
Post a Comment