Preparation of highly efficient antibacterial non-woven by facile plasma-induced graft polymerizing of DADMAC

The development of surface modification technology for temperature sensitive fibers has been a huge challenge. In this work, a novel technique based on cold plasma treatment was developed for the preparation of anti-bacterial polypropylene (PP) fibers. The results showed that plasma treatment introduced a rough surface and polar groups, which acted as the anchor point and initiators for diallyldimethyl ammonium chloride (DADMAC) graft-polymerization. The fabricated PP membranes presented a high bacterial sterilization rate, as well as excellent adhesion force and washing durability. After ultrasonic treatment for 30 min, the physical coating sample had lost anti-bacterial effect, while the plasma grafted sample still showed a sterilization rate of 91.67%. This work provided a clean and novel DADMAC grafting method and it is also applicable for anti-bacterial material fabrication.