E. Rohaeti, Senam
A silver nanoparticle is one material that has antibacterial activity. The objectives of this study are to determine the contact angle and antibacterial activity of cotton fiber by adding Ag nanoparticles and hexadecyltrimethoxysilane compound. The Ag nanoparticle was produced by the active component of mangosteen rind (Garcinia mangostana L.) as a natural reducing agent. The addition of hexadecyltrimethoxysilane (HDTMS) compounds is also done to make cotton fibers are hydrophobic. The Ag nanoparticle was performed by using Ultra Violet-Visible spectrophotometer, the antibacterial activities of cotton in inhibiting S. aureus and E. coli were analyzed by measuring an inhibition zone, and hydrophobicity properties of cotton before and after modification were measured using the method of the sessile drop. The colloid of Ag nanoparticles was produced at 442 nanometers and have an average diameter size of as much as 116 nanometers. The cotton after modification with HDTMS showed the biggest contact angle as much as 129.55°. The cotton after modification with HDTMS and Ag nanoparticle has the highest inhibition activity against S. aureus. These cotton fibers can be used as antibacterial products with a strength 4 to 5 times greater than in silver nanoparticles. © 2021, Rasayan Journal of Chemistry, c/o Dr. Pratima Sharma. All rights reserved.
Department of Chemistry Education, Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta, Yogyakarta, 55281, Indonesia
