New composites have potential for medical applications


Professor Gajanan Bhat has elastic non-woven fabric. Credit: Andrew Davis Tucker / UGA

Researchers at the University of Georgia have developed new materials with ideal properties for medical products such as masks and bandages. It is also more environmentally friendly than the materials currently in use.

Using non-woven fabrics (fabric made by bonding fibers without weaving or knitting), the team led by Gajanan Bhat was able to manufacture it. Composite material Elastic, breathable, absorbent, Medical products..To integrate cotton It also makes the resulting material comfortable on the skin ( Medical request) And because it’s easy to compost, it’s more durable compared to similar products currently on the market.

Funded by the U.S. Department of Agriculture, the researchers tested different combinations of cotton and nonwoven fabric with properties such as breathability, water absorption, and stretchability, as well as the nonwoven fabric of origin. The composite fabric performed well in the test, was more breathable, more absorbent, and had better stretch recovery, so it could withstand repeated use.

According to a report by Acumen Research and Consulting, demand for nonwoven fabrics has increased in recent years and the market value is expected to reach $ 77 billion by 2027. Nonwoven fabrics are used in common household items such as diapers, diapers, feminine hygiene products, air filters and water purifiers. They are water resistant, elastic, breathable, and able to filter air, making them ideal for medical applications.

“Some of these products Biomedical applicationLike bandages and raps, it requires some stretching and stretch recovery. However, having cotton is really helpful because they come in contact with the body, ”said the head of the Textiles, Merchandising and Interior Department of the College of Family and Consumer Services, who co-wrote the thesis with a master’s student. Said Bert, who is a person. Principal author Partha Sikdar and doctoral student Shafiqul Islam.

Cotton is not as elastic as nonwoven fabrics, but it is very absorbent, soft and comfortable to wear. Cotton is also Georgia’s primary crop and an important part of the state’s economy. The USDA is researching new uses for cotton, and Bhat has suggested they “marry elastic fabrics.” Fabric Use cotton to make something rich and stretchy. “

Professor Gajanan Bhat demonstrates how to wrap elastic nonwoven fabric and use it as a medical bandage in the lab at Riverbend Research Labs North. Credit: Andrew Davis Tucker / UGA

Bhat, who specializes in nonwoven fabrics, thought the resulting material might be more comfortable and compostable upon disposal while still retaining the desired properties of the nonwoven fabric.

To test the performance of composites, Bhat, Sikdar and Islam have combined cotton with two nonwovens (spunbond and melt blow). Nonwoven nonwoven fabrics contain coarser fibers and are generally elastic, while meltblown nonwoven fabrics contain finer fibers, allowing for better filtration capacity.

“The idea is: which combination will give you the best performance? Bart said. “It should be elastic with some elasticity, and at the same time breathable and absorbent.”

The team prepared Nonwoven We combined fabrics of different thicknesses with one or two cotton fabrics and ended up doing 13 different tests.

Tests have shown that the composite fabric has better water absorption compared to the original nonwoven fabric while maintaining good breathability. The water absorption of the composite was 3-10 times that of the non-cotton fabric. The composite also maintained the ability of the nonwoven fabric to recover from its stretched state, allowing it to respond to spontaneous movements without losing its shape.

Poor quality cotton can be used in the process of making composite nonwovens, and sometimes waste or recycled cotton can be used for making t-shirts, sheets, etc., said Bhat, a professor of textile and textile at the Georgia Sports Association. I am. Therefore, the resulting product is more durable and cheaper to manufacture.

This study was published in the Journal of Industrial Textiles.

Float in the summer with a more buoyant, liquid-resistant life jacket and swimsuit

For more information:
Partha Sikdar et al, Microstructure and physical properties of composite nonwovens made by incorporating cotton fibers into elastic spunbonds and meltblown tapes for medical textiles, Journal of Industrial Textiles (2021). DOI: 10.1177 / 15280837211004287

Quote: New composite material for medical use acquired on July 23, 2021 from (July 23, 2021) Can be

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