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An Organic–Inorganic Hybrid Composite as a Coating Agent
Author(s) -
Kuroda Akihiro,
Joly Pascal,
Shibata Naoki,
Takeshige Hikari,
Asakura Kouichi
Publication year - 2008
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-008-1230-1
Subject(s) - contact angle , linseed oil , materials science , composite number , coating , composite material , silicone , calcination , superhydrophobic coating , silicone oil , chemical engineering , chemistry , organic chemistry , catalysis , engineering
Abstract An organic–inorganic hybrid composite for use as a coating agent was prepared by mixing linseed oil with hydrophobic octylsilyl titanium dioxide particles having an average diameter of 35 nm (OSI‐TIO2‐35) in volatile silicone. The weight ratio of linseed oil with OSI‐TIO2‐35 was varied from 2:8 to 8:2 and the mixture was spread on a glass plate by dragging an applicator across it. After storing in the oven at 60 °C for 2 days, the composite having the weight ratio of OSI‐TIO2‐35 with linseed oil at 8:2 exhibited very high water‐repellent properties having a water contact angle of 148°. Variation of the water contact angle during storage at 60 °C was monitored. It decreased by 10° in the initial 8 h and then increased by 45° over the next 2 days. Composites containing silicone resin, TMSS BY11‐018, instead of linseed oil were also prepared. The sample having a weight ratio of OSI‐TIO2‐35 with TMSS BY11‐018 at 8:2 also exhibited very high water‐repellent properties with a water contact angle of 152°. The highly hydrophobic surface thus prepared by the coating and drying of those organic‐inorganic hybrid composites was easily transferred to highly hydrophilic surfaces by calcination at 500 °C for 3 h.