Nowadays, people’s demand for various types of textiles is no longer just about aesthetics, but also requires functionality such as safety and health care. The whimsical-sounding textiles such as clothing fabrics, curtains, bed sheets, and car carpets that can purify the air for a long time, degrade formaldehyde, self-clean, protect against ultraviolet rays, and have efficient antibacterial and deodorizing properties are no longer a dream.
Self-cleaning, air purification, antibacterial, deodorization, and UV resistance are all “magical” functions of textiles explored by the textile chemistry and dyeing and finishing engineering research and innovation team led by Shen Yong, a professor at the School of Fashion at Shanghai University of Engineering and Technology. The team developed a nanophotocatalytic material that can degrade organic matter under the action of light, causing harmful organic matter such as formaldehyde and benzene in the air to be decomposed into water and carbon dioxide, thereby purifying the air.
“People often hear in news reports that some children got leukemia and other diseases after riding in a newly bought car or living in a newly renovated house. Although medicine is not yet certain that formaldehyde, benzene and other substances cause these diseases. The main reason is, but we still hope to find a material that can purify the air well and prevent air pollution from causing diseases.” Speaking of the original intention of the team’s research, Professor Shen Yong seemed very determined. At the same time, he also said that in the manufacturing process, nano-photocatalytic materials and textile fibers are firmly combined, and can be used as an efficient and durable photocatalytic and other multi-functional textiles to degrade or decompose volatile organic compounds in the environment, and can be applied In daily life and some special occasions, it can achieve the effect of “purifying the air”; at the same time, the photocatalytic functional textile also has multiple functions such as UV protection, antibacterial and deodorization.
However, many technical difficulties need to be overcome to achieve uniform dispersion of nanoparticles and strong bonding with fibers. It is understood that many research teams have also tried many methods, such as using solution blending or melt blending methods to mix nanomaterials and fiber polymers to produce functional fibers and fabrics. However, nanomaterials are easily agglomerated and may It is accompanied by impurities and is difficult to control; some research teams also use adhesives to attach nanomaterials to the surface of fabrics. However, such adhesion will make the fabrics feel rough and difficult to care for and clean.
Through nearly 10 years of research, Shen Yong’s research team has used chemical methods of structural modification to bring nanomaterials with reactive chemical groups that can directly react with fibers to achieve tight covalent bonds. This chemical combination not only It ensures the feel of the fabric, does not contain any added adhesive, and also utilizes the characteristics of the fabric raw materials, which is green and environmentally friendly.
According to Shen Yong, the key to this project is to achieve breakthroughs in related technologies in the process of uniform dispersion of nanoparticles and their firm combination with fibers, and the completion of a number of technological innovations. Developed the “one-step” hydrolysis preparation application technology and production technology of modified nano-titanium dioxide for functional finishing of textiles, developed a feasible finishing process of modified nano-titanium dioxide on textiles, and solved the problem of uniform dispersion of nanoparticles on fibers and their In order to solve the problem of strong combination with fibers, we have developed a series of fabric photocatalysts, antibacterial, and anti-UV multifunctional finishing agents, and established a production base for nanometer multifunctional textile clothing fabrics, home textiles, and automotive interior textiles.
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