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The mechanism of textile antibacterial finishing 2021.11.12

1. The mechanism of antibacterial finishing of fabrics

The antibacterial finishing of fabrics is based on three mechanisms: manipulated release; regeneration principle; obstacle or blockage effect.

1.1 Controlled release: The fabric after the antibacterial finishing releases the antibacterial agent in a controlled manner under a certain temperature and humidity, and the rate is sufficient to kill or inhibit the growth of bacteria or fungi.

1.2 Regeneration principle: After the fabric finished with a very antibacterial finishing agent is washed or irradiated by radiation, the covalent bond between the finishing agent and the fiber on the fabric is broken and the bactericide is continuously regenerated, so as to achieve the purpose of continuous antibacterial.

1.3 Obstacle or blocking effect: by forming an inert physical barrier layer or PU coating on the fabric to prevent microorganisms from passing through the fabric; or coating the fabric with a film with direct surface contact activity, when the bacteria and the bacteriostatic finishing agent contact Later, the metabolism of the cell wall is destroyed by adsorption and other effects, and the growth of bacteria is blocked.

2. From the perspective of bacteriology, the antibacterial finishing agent can achieve the purpose of antibacterial or sterilization through the following ways:

2.1 It chemically reacts with the protein in the bacterial cell and destroys its function;

2.2 Inactivate various metabolisms in bacterial cells, thereby killing bacteria;

2.3 Inhibit the production of gowns, block DNA synthesis, and inhibit its growth;

2.4 Destroy the energy release system in the cell;

2.5 Speed ​​up the phosphoric acid redox system and disrupt the normal cell growth system;

2.6 Through charge adsorption, the cell wall of the bacteria is ruptured, thereby killing the bacteria;

2.7 Obstruct the generation of electron transfer system and amino acid transesterification.