Superhydrophobic antibacterial cotton textiles.
We present a facile and effective method to prepare superhydrophobic cotton textiles. Silver particles were produced on cotton fibers by treatment with aqueous KOH and AgNO(3), followed by reduction treatment with ascorbic acid in the presence of a polymeric steric stabilizer to generate a dual-size surface roughness. Further modification of the particle-containing cotton textiles with octyltriethoxysilane led to hydrophobic surfaces. Surfaces prepared showed a sticky property, which exhibits a static water contact angle of 151 degrees for a 10 microL droplet that water drop did not slid off even when the sample was held upside down. The modified cotton has potent antibacterial activity toward both Gram-positive and Gram-negative bacteria. The Ag particles were uniformly and stably distributed on the substrate surface and killed bacteria. These modified cotton textiles are potentially useful; as superhydrophobic antibacterial fabrics in a wide variety of biomedical and general use applications.
Shateri Khalil-Abad
Mohammad
M
Young Researchers Club, Yazd Branch, Islamic Azad University, Yazd, Iran. shaterimagenta@gmail.com
Yazdanshenas
Mohammad E
ME
D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D032561:Cotton Fiber; D004926:Escherichia coli / Q000187:drug effects*; D057927:Hydrophobic and Hydrophilic Interactions; D008826:Microbial Sensitivity Tests; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D010316:Particle Size; D012834:Silver / Q000737:chemistry / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects*; D013499:Surface Properties; D013784:Textiles
D000900:Anti-Bacterial Agents; D009942:Organometallic Compounds; D012834:Silver