New trends in the development of antibacterial materials

New trends in the development of antibacterial materials

In just over a year, the outbreak of the new coronavirus has dealt a heavy blow to people all over the world. Currently, the number of infections worldwide exceeds 200 million, and nearly 5 million people have died. This is an unprecedented situation that mankind has encountered. We still don’t have a healthy treatment method that does not damage human body functions. The epidemic is still going on, and the special variant Delta virus is raging, which is much higher than the previous SARS and MERS. Humanity is dealing with existential threats. The battle against the virus continues, and it is unclear when victory will be achieved.

As the world’s factory, China has played a backbone in the global fight against the epidemic. China takes human life, health and safety as its own responsibility, vigorously promotes the research and development and production of vaccines and various antibacterial and antiviral materials, and has made outstanding contributions to the world’s fight against the epidemic. contribute.

Textiles have played an absolute backbone in resisting the spread of the global new coronavirus. Especially when the vaccine has not yet been popularized globally, people basically use antibacterial textiles for personal protection to block the spread of the virus. In response to market demand, short-term A variety of antibacterial textile materials have suddenly emerged over time, ranging from materials, antiviral mechanisms, preparation processes, etc., with a dazzling array of products. People are at a loss when choosing and using, and it is difficult to make professional comparisons and choices. For the sake of safety, everyone can only look at which brand has the strongest publicity, which price is high, and which one is endorsed by a big company, and then they flock to it. This has caused an emergency shortage of front-line medical consumables, and the country had to intervene compulsorily. , the people’s lack of knowledge and understanding of antibacterial, the principles of virus breeding and spread, and the standards and use environment of antibacterial products are the root causes of blind obedience and irrational consumption in today’s society. It also provides unscrupulous businesses with An opportunity to take advantage of.

As a major category of personal protection products, antibacterial textiles have low industry and national standards, and the market entry threshold is too low. They have been in a state of disordered development, resulting in a huge market volume, many of which are driven by research and development and are practical. Companies that make good products, but their development is mostly blocked or bought out by some companies with hype concepts. In addition, textile companies driven by high-performance antibacterial R&D and industrialization can only seek a small number of companies with high antibacterial and antiviral needs. Cooperating with brands or medical institutions, such companies are a very small part of the market, but they occupy the absolute top of high-performance products and are rarely used in civilian products.

At present, in terms of base materials, there are basically two types of antibacterial textiles – natural fibers and man-made fibers. There are generally two methods of antibacterial treatment – additive treatment and nano-slice integration. From the perspective of the preparation process, additive treatment is Taking the source and attachment process of additives as the core, the integration of nanoparticles takes the preparation process, addition ratio and method of nanoparticles as the core; no matter which way, the core materials for antibacterial effects have two methods: natural extraction and artificial synthesis. Natural It is difficult to guarantee the general effect of refining antibacterial additives; artificial synthesis is mainly in the form of silver, copper, zinc, titanium and other metal elements and their various compounds, some of which are heavy metals. Each company presents different product performance according to its own technology. To judge the quality of antibacterial products, we basically rely on several aspects such as durability, broad spectrum, safety, degree of shedding of antibacterial factors, and spinnability of the material. Most of them are judged by the user themselves. The above two mainstream materials and antibacterial treatment Because it is basically a physical combination, the adhesion fastness, attachment location, adhesion density, uniformity, etc. of antibacterial materials on fibers will be very different, so there will inevitably be performance shortcomings in different evaluation dimensions. In addition, Most of the textiles based on natural fibers can only be treated with additives. The development and changes of antibacterial materials in the past few decades are more reflected in the refining of additives, processing technology and various nanomaterials used in slicing. Recently, with the With the development of science and technology and investment in R&D, some new materials have emerged. Currently, the third antibacterial material has appeared. Shanghai Lanbang Industrial Fiber Company has successfully developed a cotton-based A high-performance natural fiber modified by a special chemical reaction for the base material. Because the antibacterial factors co-bond with specific molecular chains in the cotton fiber to directionally modify the molecular structure, this is an antibacterialtextile From the perspective of preparation principles, new categories emerging in the industry have made certain breakthroughs in issues such as antibacterial factor shedding, durability and safety, and experimental results have shown super antibacterial function, with a fungal antibacterial rate of up to 99.95%. .