Fabrication and characterization of colorimetric polymer based novel nanofibers for sensing and blocking of bacterial

In this study, novel and innovative nanofibers were fabricated using polydiacetylene(PDA) which have colorimetric properties. The resultant nanofibers were evaluated against the bacteria detection and blocking properties of nanofibers. PDA/PU nanofibers effectively detected both gram-positive and negative bacteria through color change and as per evaluation of the bacterial blocking properties of the nanofibers, it was confirmed that the nanofibers were kept in blue color because the bacteria were not transmitted. In conclusion, the PDA/PU nanoweb detects bacteria and changes its color from blue to red, and quantitative analysis is possible through the degree of color change. The nanofibers developed through this study can be used as fiber-type biosensors because it can detect quantitatively the bacteria through rapid colorimetric reaction and confirm the bacterial infection of fiber materials and foods. In addition, it can be used as a protective clothing material such as a mask and a filter because it can block bacteria.