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DEVELOPING AND ASSESSING FUNCTIONALITY OF UV PROTECTIVE NANO FINISHED NON-WOVEN DRAPERY LININGS

KrishiKosh

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Title DEVELOPING AND ASSESSING FUNCTIONALITY OF UV PROTECTIVE NANO FINISHED NON-WOVEN DRAPERY LININGS
DEVELOPING AND ASSESSING FUNCTIONALITY OF UV PROTECTIVE NANO FINISHED NONWOVEN DRAPERY LININGS
 
Creator HARINI, D
 
Contributor SHARADA DEVI, A
 
Subject sampling, processed products, cotton, polymers, economic resources, fruits, diseases, concentrates, hides and skins, selection
 
Description Exposure to ultraviolet radiation is a risk factor in population spending in outdoor
activities. Long-term exposure to UV light can result in tanning, ageing of skin,
photodermatosis, skin reddening, and sunburn, increased risk of skin cancer, eye damage
and DNA damage. To combat the problems encounted with the increased UV radiation,
scientists have been searching for different ways. In textiles UV protective finish is a latest
technological advancement. . Inorganic UV blockers like ZnO, TiO , SiO are more stable &
preferred to the organic UV blockers as they are non-toxic & chemically stable under high
temperature through nano coating of the fabrics with UV blocking agents.
Generally curtains are provided with lining material to protect from sunlight and it
requires a lining fabric which also adds weight and cost of the drapery. Non-wovens are
light in weight and provide better drape when used as linings to curtains besides being cost
effective compared to woven fabrics. Among many fibres used for making non-wovens,
polyester in original or recycled form produces good strength and required drape.
Needle punching technology was selected for fabricating the non-woven fabrics.
Finishing was carried out by pad-dry-cure technique. Accordingly sixteen non-woven
fabrics consisting of formulated control and finished non-woven fabrics were subjected to
laboratory testing and subjective evaluation.
Among all the treated unexposed and exposed fabrics C1 had high fabric weight and
A3 had low fabric weight. This could be attributed due to the finishing solution and padding.
The thickness of the unfinished fabrics was higher than finished fabrics. There was no
change found in thickness between the unexposed and exposed samples which may flatten
the fibres due to finishing. Unfinished fabrics had low drape, compare to finished fabrics.
High drapability was observed in A3 and B3 finished fabrics before and after exposing to
sunlight. Increase in air permeability of the fabrics was observed in all finished fabrics
compare to unfinished and among all finished fabrics A3 had high air permeability and C1
had low air permeability even after exposure to sunlight.
Thermal conductivity of the treated unexposed and exposed fabrics was improved
after treatment. The higher CLO the lesser is the conductivity of the material. The CLO
values of the treated decreased, which indicates that the thermal conductivity was increased.
The exposed samples had higher thermal conductivity than the unexposed samples. It was
observed that the tenacity of all treated fabrics decreased. Maximum loss of strength was
observed in 1 percent concentration of unexposed finishing samples. Same trend was
observed even in exposed samples.
The increase in tear strength was progressive with the increase in concentration of
the finish. It was interesting to note that all finished exposed samples increased in tear
strength when compared to unexposed samples. By taking the results in to consideration the
increase in tear strength in all treated samples might be attributed to criss cross layering of
fibre arrays during the formation of web of non-wovens, the padding and UV finish.
Maximum weight loss was observed in more cotton content fabric attained highest weight
loss compared to other fabrics. The weight loss was decreased from control to finish and
finished to exposed fabrics indicating improved in abrasion. In abrasion resistance recycled
polyester fabrics faired better than virgin polyester and cotton.
Subjective evaluation revelead that finished fabrics were more suitable for drapery
lining as compared to unfinished. Most of the respondents reported that A1, A2, and A3
fabrics are not suitable for drapery linings which was composed of 50% cotton and 50%
virgin polyester. The appearance of these finished fabrics was poor and stiffness was limpy.
As this study revelead that the 50% virgin polyester and 50% cotton combination lower in
strength compared to cotton and recycled polyester. The UPF rating was improved for all
the finished fabrics with maximum UPF ratings. Among the concentration of nano particles
one percent expression showed highest UPF Value. It also indicated that finished samples of
30% cotton+ 70% virgin polyester (B), 50% cotton+50%recycled polyester (C) and 30%
cotton+70% recycled polyester (D) fabrics provided high resistance for UV radiation and
therefore employed for the end use.
 
Date 2016-06-01T14:08:09Z
2016-06-01T14:08:09Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66544
 
Language en
 
Relation D8921;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY