Clear antismudge unimolecular coatings of diblock copolymers on glass plates.
Two poly[3-(triisopropyloxysilyl)propyl methacrylate]-block-poly[2-(perfluorooctyl)ethyl methacrylate] (PIPSMA-b-PFOEMA) samples and one poly(perfluoropropylene oxide)-block-poly-[3-(triisopropyloxysilyl)propyl methacrylate] (PFPO-b-PIPSMA) sample were synthesized, characterized, and used to coat glass plates. These coatings were formed by evaporating a dilute polymer solution containing HCl, which catalyzed PIPSMA's sol-gel chemistry. Polymer usage was minimized by targeting at diblock copolymer unimolecular (brush) layers that consisted of a sol-gelled grafted PIPSMA layer and an oil- and water-repellant fluorinated surface layer. Investigated is the effect of varying the catalyst amount, polymer amount, as well as block copolymer type and composition on the structure, morphology, and oil- and water-repellency of the coatings. Under optimized conditions, the prepared coatings were optically clear and resistant to writing by a permanent marker. The marker's trace was the faintest on PFPO-b-PIPSMA coatings. In addition, the PFPO-b-PIPSMA coatings were far more wear-resistant than the PIPSMA-b-PFOEMA coatings.
Department of Chemistry, Queen's University , 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6.
Danielle
D
Macoretta
Muhammad
M
Rabnawaz
Claudia M
CM
Grozea
Guojun
G
Liu
Yu
Y
Wang
Alison
A
Crumblehulme
Martin
M
Wyer
and water repellency; block copolymer; coatings; oil repellency; sol−gel chemistry