Antibacterial finishing and the development trend of textile mills -
Tonda home textiles co. , LTD
When the basic conditions such as nutrition, water, oxygen, and the right temperature all have, textile is a great medium to microbial growth, its huge surface area helps the growth of microorganisms.
In order to reduce the harmful microorganisms harm to people, to prevent from person to person, between people and animals, animals, and spread, we have to artificially control the growth of microorganisms in textiles.
The durability of antibacterial finishing is a kind of very effective method.
It can reduce the smell of the microbial degradation of fabric, can kill or inhibit bacteria, reduce the harm to human body, have the effect of health care.
But the ideal antibacterial finishing and the process should meet the following conditions: non-toxic, does not cause skin irritation or discomfort; does not affect the textile performance or appearance; can compatible with conventional processing technology and washed many times.
After finishing process must be friendly to the environment, finishing remains intrinsic function of finishing agent, finishing products with durability and preserve the fabric of the required functionality and performance.
The antibacterial mechanism of antibacterial agent to inhibit or kill bacteria, there are several ways of different kinds of antimicrobial, antibacterial mechanism, can be summarized as the following several kinds: 1.
Make all sorts of bacteria metabolic inactivation, kill bacteria;
React with intracellular protein, undermine its functions;
Restrain spore formation, blocking DNA synthesis, inhibit the growth of cells;
To speed up the phosphoric acid chloride reduction system, disturb the normal cell growth system;
Violation of intracellular energy release system.
Hinder the electronic transfer system and the process of transfer amino acid ester;
Through the adsorption effect of electrostatic field, to destroy the cell wall and kill bacteria.
The type of antibacterial finishing agent currently many antibacterial finishing agent: can be divided into inorganic, organic and natural antibacterial agent three big kinds.
Inorganic type of antibacterial agent for metal ions and some more photocatalytic antibacterial agent and compound finishing antimicrobial agent.
The composition of metal and metal salt inorganic antibacterial agent, mainly including carrier and antibacterial ingredients, the carrier is not antibacterial ingredients, but guarantee the stability of the active components, and has a slow release.
Antibacterial ingredients are mainly some metal ions, such as Pd, Hg, Ag, Cu and zinc and their compounds, through combined with bacterial cells in the protein, the bacteria denaturation or inactivation.
Considering the safety, often choose Ag, Cu and zinc.
But as a result of Cu ions with color, fabric appearance;
With recent antimicrobial properties is poor, its strength is only 1/1000 of the Ag.
So most of commercialization on the market the use of inorganic antibacterial agent carrying silver.
Antibacterial mechanism of silver series no definite conclusion at present, there are mainly catalytic antibacterial mechanism and antibacterial mechanism and light contact most people agree that contact antibacterial mechanism.
Ag + after contact with bacteria with coulomb attraction firmly adsorbed on the negatively charged cell membrane, and to further penetrate into the bacterial cell wall inside, rather than the sulfonium reaction, damage cells synthetic activity, make the loss of split proliferation and cell death, and Ag + will continue to free from dead bacteria sterilization, antibacterial effect is more durable.