Development of N-halamine loaded polyvinyl chloride micro-nano fi̇bers and investiigation of their antibacterial properties

Millions of people worldwide are losing their lives due to hospital viruses and infectious diseases. Using materials with antibacterial properties is very important to reduce the inconvenience and deaths caused by these pathogens. According to the latest statistics, the most consumed plastic after the olefin group is 16% with PVC. Global demand for PVC is increasing day by day. Currently, the consumption of PVC in the world, which is 44 million tons per year, is estimated to be around 48 million tons in 2019 and that only 19 million tons of this consumption will be consumed by China. PVC is used in many areas where the antibacterial property is expected, especially in food packaging, medical equipment coating, hospital furniture surfaces,etc.. Therefore, many studies have been done to improve the antibacterial properties of PVC. N-halamines are preferred for PVC in terms of having high stability, non-toxic, non-irritant for skin and regenerable.We choose TTDD as N-halamine of which has 3 chemical end group. And we choose electrospining method which expected to be one of the important production methods in the future. Then try to fill the gap in the literature. In our study, we first synthesized TTDD N-halamine, and then treated for 1 hour in 30% hypochlorite solution.After dried TTDD particules. The fibers were electrospinning from the solution containing TTDD in the amount of 1%, 3 %, 5 % of PVC by adding TTDD to the desired percentage of DMF/THF solution containing 15% PVC. Then, each of the fibers in these ratios, pH5, pH7, pH 12,40 in 30% hypochlorite solution for 6 hours by treating the rate of percent ph chlorine was determined. Then, taking into consideration the results, 54 values for each 1%, 3%, 5% TTDD ratio were measured, which solutions having the percentage of chlorine 10%, 20%, 40% and pH 5, pH 7 the number of hours of the application being 1, 6, 12 hours. After all these measurements, the best percentage of hypochlorite solution and application time were found. These samples antibacterial tests against gram-positive and gram-negative bacteria were made according to ASTM E2149 test method. Then, the corresponding graphs were obtained in DSC to get information about the thermal properties. And the surface properties and fiber diameter for each percentage were obtained by scanning electron microscopy (SEM).