Akademik Veri Yönetim Sistemi
18th Nanoscience and Nanotechnology Conference, İstanbul, Türkiye, 26 - 28 Ağustos 2024, ss.257
Liquid-repellent surfaces are smooth solid surfaces
with covalently grafted flexible polymer brushes or alkyl monolayers and
promise a wide range of uses.
Surface-tethered flexible species exhibit high mobility at room
temperature, imparting a unique liquid-like quality to solid surfaces and
non-wettable against liquids with a wide surface tension ranging from 20 to 73
mN/m. More importantly, the liquid-like molecular layer modulates crucial
interfacial properties such as friction and adhesion, potentially enabling
novel functions and applications that are beyond the reach of traditional solid
coatings. Herein, we present sonochemical grafting of methyl-terminated
poly(dimethylsiloxane) (PDMS) to the surface for practical and sustainable
fabrication of liquid-like coatings. Methyl-terminated polydimethylsiloxane is
generally regarded as inert and, therefore, non-reactive with surfaces. The
grafting of PDMS to the surface is achieved by using an ultrasonic homogenizer.
Intense sound waves cause the scission of siloxane bonds and the formation of
free radicals, enabling room-temperature grafting within 1 hour or less. PDMS
can be applied using brushing or drop-casting methods, facilitating its
suitability for large-scale applications.