Home / Knowledge / News / Textiles / Superabsorbent fabric keeps feet dry in all weathers
Superabsorbent fabric keeps feet dry in all weathers
07
Oct '08
Come rain or sunshine, children prefer to run around outdoors. But the fun is soon over if they get wet feet while hopping through the puddles. Rain boots may keep the moisture out, but they quickly turn into miniature foot saunas.

How can a shoe keep out the rain and still allow sufficient air to reach children's delicate feet? The answer is Luquafleece, a superabsorbent polyester nonwoven material produced by BASF in a unique process.

A small piece of this special, moisture-absorbing fleece is the heart of IQ .TEX, the novel ventilation element launched by the Hamburg company IQTEX: "Compared to conventional functional clothing, shoes made with this technology are not only breathable but, depending on the weather, can also be as air-permeable as cotton socks or as watertight as rain boots," says Michael Dehn, managing director of IQTEX.

When exposed to water, the tiny polymer granules of the superabsorber, which are permanently bound to the nonwoven fibers by a special BASF process, absorb up to 400 times their own weight of liquid and expand accordingly.

Superabsorbers owe this enormous suction power to their molecular structure consisting of the basic component acrylic acid. BASF chemists have joined together countless numbers of these tiny molecules into long chains that are linked together at large intervals. The result is a loose bundle of molecules that absorbs water like a molecular sponge. But the key factor producing the great absorption is the material's high ion charge. It generates an osmotic pressure that draws surrounding water into the polymer network.

Water is absorbed until the elastic restoring force of the polymer network compensates the osmotic forces. The ventilation element utilizes the small particles' thirst to seal the inside of the child's shoe against water from outside: two honeycombed lattices limit the upward and downward expansion of the small Luquafleece sections. The swelling superabsorbent particles can then only expand sideways where they soon meet up again and seal all the cavities in the nonwoven material.

On contact with water, the Luquafleece – although it was highly permeable just a few moments ago – very quickly becomes absolutely watertight. Back in dry surroundings, the water absorbed by Luquafleece evaporates and the pores reopen within a short time depending on the temperature and atmospheric humidity - allowing the air to circulate freely again.

"The superabsorber permanently surrounds the fibers of the fleece like droplets and with its high loading density provides absolute protection against the wet shoe," explains Dr. Peter Rudolf, superabsorber specialist at BASF. "The fleece can saturate itself with water any number of times and then release it again through evaporation. It's exactly this reversible moisture uptake that makes the fleece interesting for a multitude of applications."

A single square meter of the fleece, which is only a few millimeters thick when dry, can absorb up to 26 liters of water. An absolute innovation is the principle of IQ .TEX , in which a small piece of Luquafleece completely self-seals the system when exposed to wet conditions. "The idea of utilizing the mechanical barrier function of our Luquafleece came from the development experts at IQTEX, who in partnership with us then developed it into a marketable product," says Dr. Peter Rudolf.


Must ReadView All

Courtesy: BekaertDeslee

Textiles | On 23rd Oct 2017

BekaertDeslee to expand North American facility

BekaertDeslee, one of the largest manufacturer of mattress textiles...

Courtesy: A&E

Textiles | On 23rd Oct 2017

A&E unveils Magic using Repreve sewing thread

American & Efird (A&E), a leading developer of industrial and...

Courtesy: Messe Frankfurt

Textiles | On 23rd Oct 2017

Over 4,000 exhibitors attend Intertextile Shanghai 2017

Another successful Intertextile Shanghai Apparel Fabrics has wrapped...

Interviews View All

Pinkesh Jain
Everflow Petrofils Ltd

‘An innovative technology which India needs desperately is the...

Deepak Jain
Baggout

We are using Facebook and Instagram to promote ourselves

Amrit Sethia
SOIE

‘The intimatewear category in India is slowly becoming trend-sensitive.’

Nitesh Mittal

Kusumgar Corporates is a leading manufacturer of technical textiles and...

Harmeet Singh

New Delhi-based Jogindra Industries Private Limited provides an assortment ...

Hardik Sanghvi

Idealin Fogging Systems has been engaged in designing and manufacturing...

Lynda Kelly
Suominen Corporation

Suominen Corporation is a manufacturer of nonwovens as roll goods for...

Kerem Durdag
Biovation II LLC

Kerem Durdag, CEO, Biovation II LLC, provides an insight into future...

Giorgio Mantovani
Corman S.p.A

Giorgio Mantovani, MD of Corman, with a presence in both Milano and New...

Robert Brunner
Devereux

Golfwear and menswear brand Devereux is set for greener pastures. Robert...

Silvia Venturini Fendi
Fendi s.r.l

"Yes, my confidence and positive attitude are my strengths and should be...

Pranav Mishra
Huemn

Designers Pranav Mishra and Shyma Shetty’s Huemn is known for its...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


editorial@fibre2fashion.com

Letter To Editor






(Max. 8000 char.)

Search Companies





SEARCH

October 2017

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.

news category


Related Categories:

Planning to Take the Leap towards
Sustainability?

Do you see sustainability as a route to business growth?

Yes No

Do you think the sustainability space has the needed tools and resources available for a business to lead change?

Yes No

Active Poll

Do you see sustainability as a route to business growth?

Yes
77.1%
No
12.9%
Skip
10.0%

Total Votes: 70

Do you think adopting a sustainable approach will be a profitable move for your business?

Yes No

Active Poll

Do you think the sustainability space has the needed tools and resources available for a business to lead change?

Yes
61.4%
No
28.6%
Skip
10.0%

Total Votes: 70

Do you want the world to know about your sustainability journey and your business’ environmental footprint?

Yes No

Active Poll

Do you think adopting a sustainable approach will be a profitable move for your business?

Yes
85.7%
No
10.0%
Skip
4.3%

Total Votes: 70

Thanks for your valuable feedback. Claim your free latest sustainability e-book.

Active Poll

Do you want the world to know about your sustainability journey and your business’ environmental footprint?

Yes
75.7%
No
11.4%
Skip
12.9%

Total Votes: 70


E-News Insight
Subscribe Today and Get the
Latest News Update in Your Mail Box.
Advanced Search