การเคลือบอนุภาคเงินลงบนผิวแก้วด้วยการจุ่มเคลือบแบบไม่ใช้ไฟฟ้า / เนตรชนก จิตรวรนันท์ = Coating of Ag particles on glass surface by electroless plating / Natechanok Chitvoranund
Silver film was fabricated on a glass substrate by electroless plating in Tollen’s reagent. Many parameters which effected on adhesion between silver film and a glass substrate were studied. The results showed that using ultrasonic vibration did not enhance adhesion between the two phases while the physical surface treatment played more important roles than the chemical one and ultrasonication. The combined treatment of grinding with silicon carbide number 320 then etching with hydrofluoric acid for 90 seconds (SPHF) showed the highest adhesion reported in scale of 5B using cross cut test (method B). Moreover, heat treatment could enhance adhesion between silver film and a glass substrate as well. In addition, when comparing the contact angle of before and after silver plating of SPHF condition, it was found that both of them performed hydrophilicity. However, a glass with silver film presented higher contact angle than a glass surface without silver film. Furthermore, silver film both before and after heat treatment of 550˚C exhibited 99.99% and 100% reduction of E.coli respectively which was confirmed by spread plate method. Although it was hardly seen the inhibition zone in disc diffusion method, silver film could inhibit only E.coli where they were contacted with the film.
