Paper Title
Ex Situ Synthesis in Producing Nanoparticles to Enhance Antibacterial Activity of Nylon

Abstract
Modification of Nylon fabrics with HDTMS compound and silver nanoparticles which prepared via bio-reduction method using banana peel extract (Musa paradisiaca Linn.) has been conducted in this research. Those modification can increase the quality of Nylon fabrics so they have antibacterial and self-cleaning properties. The types of Nylon fabrics in this research are Nylon fabric (Ny0), Nylon-Ag (Ny1), Nylon-HDTMS (Ny2), Nylon-Ag-HDTMS (Ny3), and Nylon-HDTMS-Ag (Ny4). The characteristic of silver nanoparticles was analyzed by UV-Vis Spectrophotometer. Antibacterial acitvity against E.coli and S.aureus was determined by measuring the clear zone around the sample. While the contact angle test was performed by sessile drop method. Silver nanoparticles which formed have a maximum peak at the wavelength of 440.50 nm. Nylon-Ag shows the highest antibacterial activity against E.coli and S. aureus. The antibacterial activity of Nylon-Ag at 54 hours of incubation time is 97 times higher than antibacterial activity of Nylon without modification at 24 hours of incubation against E.coli. Likewise with the antibacterial activity of Nylon-Ag in inhibiting the growth of S. aureus, Nylon-Ag has antibacterial activity at 72 hours incubation time of 85 times higher than Nylon at 48 and 72 hours incubation. However, Nylon-HDTMS-Ag has the greatest contact angle, that was 110.63o Index Terms - Antibacterial Activity, Contact Angle, HDTMS Compound, Nylon Fabrics, Silver Nanoparticles