UMass Amherst polymer scientists Kenneth Carter and James Watkins, collaborating with team leader Francesco Fornasiero of Lawrence Livermore National Laboratory (LLNL), recently received a five-year $1.8 million grant to design ways to manufacture the new material as part of a $13 million project funded by the U.S. Defense Threat Reduction Agency. It’s estimated that the new uniforms could be deployed in the field in less than 10 years.
The researchers say the fabric will be able to switch reversibly from a highly breathable state to a protective one in response to the presence of the environmental threat without the need for an external control system. In the protective state, the uniform material will block the chemical threat while maintaining a good breathability level. “The uniform will be like a smart second skin that responds to the environment,” says Fornasiero.
UMass Amherst polymer scientists bring expertise in additive-driven assembly processes that bring polymers and nano particles together to produce hybrid functional materials to the project. Membrane and layer fabrication will take place in part through the university’s Roll-to-Roll Nanofabrication Laboratory.
The new fabric’s reversibility is due to highly breathable membranes with pores made of a few-nanometer-wide, vertically-aligned carbon nanotubes modified with a functional surface layer designed to respond to the presence of a chemical warfare agent, says Watkins at UMass Amherst. The threat response would be triggered by direct chemical warfare agent attack. The fabric would switch to a protective state by closing the pore entrance or by shedding the contaminated surface layer.
For wearer comfort and safety, high breathability is a critical requirement for protective clothing to prevent heat stress when military personnel are engaged in missions in contaminated environments. To provide high breathability, the new composite material will take advantage of the unique transport properties of carbon nanotube pores, which offer gas transport rates two orders of magnitude faster than any other pore of similar size.
The polymer scientists point out that biological agents such as bacteria and viruses are close to 10 nanometers in size. Because the membrane pores on the uniform are only a few nanometers wide, these membranes will block such agents.
However, chemical agents such as mustard gas and nerve gas can be much smaller and require the membrane pores to be able to react to block that threat. To create a multifunctional membrane, the research team plans to modify the surface of the original prototype carbon nanotube membranes with chemical threat responsive functional groups. These functional groups sense and block the threat like gatekeepers on entrance.
Apparel/Garments | On 29th May 2017
The Bangladesh Garment Manufacturers and Exporters Association...
Textiles | On 29th May 2017
The special garment package of Rs 6,000 crore that was introduced by...
Textiles | On 29th May 2017
The textile company Tintex has joined hands with the system supplier...
GST will certainly reduce a lot of paperwork in future
We are spending double digit figures on R&D
Hindoostan Innovation Centre
‘Modern technical textile is an indispensable tool for science and...
Swerea IVF AB
Marten Alkhagen, Senior Scientist - Nonwoven and Technical Textiles of...
Sidwin Fabric is a manufacturer and exporter of polypropylene textiles and ...
Urs Stalder, CEO, Sanitized AG, talks about the increasing use of hygiene...
<b>Sanjukta Dutta</b> creates unique garments by clubbing prints of...
Sonam and Paras Modi's Sva Couture is synonymous with head-turning...
Yash P. Kotak
Bombay Hemp Company
One of the directors of Bombay Hemp Company, Yash P. Kotak, speaks to...
Apparel/Garments | On 26th May 2017