Nanotechnology is a new technology in recent years, the manufacturing technology is the material with a single atom, molecule, in addition to study physics and chemistry, for false propaganda. For now, the average consumer, nanotechnology is familiar and unfamiliar. But in the foreseeable future, nanotechnology will be widely used in textile and clothing.
Recently, Shanghai University of Engineering Science professor Shen Yong led by clothing textile chemistry and dyeing and finishing engineering scientific research and innovation team of scientific research "high performance nano photocatalysis functional textiles processing key technology and industrialization" won the Shanghai Municipal Science and technology progress prize two.
To purify the air of textiles
As early as in 2006, Japanese companies began to air purification of textiles, part of the company's production of polyester fabric can purify formaldehyde, ammonia, acetic acid and other substances, and some fiber can eliminate the ammonia by chemical absorption method, and the other a pet on acetaldehyde removal effect is very strong, and the main acetaldehyde is the composition of tobacco.
Shen Yong led the research team developed the nano catalytic materials, can be under the action of light degradation of harmful organic pollutants in the air formaldehyde, benzene and other organic matter, these will be decomposed into water and carbon dioxide, so as to achieve the effect of air purification. After identification, this research sets of self cleaning, air purification, deodorization, antibacterial, anti UV function in a body.
When it comes to the original project, Professor Shen Yong told reporters: "now a lot of children sitting on the news has just bought a new car, or live in the new house soon got leukaemia, although the medicine can not determine the formaldehyde and other harmful substances is the main cause of disease, but we still hope to find a can purify the air material to avoid the harm of air pollution on the human body. Rhododendron aureum
In the study, he found that the photocatalytic materials and textile fiber can be used as an efficient and persistent photocatalytic with multifunctional textiles, degradation or decomposition of volatile organic compounds in the environment, can be used in daily life and some special occasions, to achieve "clean air".
More surprising is, the product not only can purify the air, but also has multiple functions such as anti ultraviolet, antibacterial and deodorizing. In contrast, Japan's air cleaning textiles is of single function, inconvenience of use.
However, the photocatalytic materials and textile fiber combined with the need for a lot of research work, the attempt had been a lot of research team.
The team took a solution or melt mixing method, mixing nano materials and polymer, preparation of functional fiber and fabric, which solves the nano molecules need to be firmly combined with the fiber, but a new problem: nano materials made easy to reunite, and may be associated with impurities, not easy control.
Another method is through the adhesive surface of the nano materials "stick" in textiles. The textile is not easy to clean, and the material feels rough.
Through the study of nearly ten years, Shen Yong finally found a solution: chemical method modified by the structure, the nano material with reactive chemical groups can be directly reacted with the fiber to achieve covalent bond closely link the chemical combination, not only to ensure that the fabric handle, does not contain any added binder, also made use of the characteristics of textile raw material, green environmental protection.