TY - JOUR
T1 - Effect of treatment temperature on surface wettability of methylcyclosiloxane layer formed by chemical vapor deposition
AU - Ishizaki, Takahiro
AU - Sasagawa, Keisuke
AU - Furukawa, Takuya
AU - Kumagai, Sou
AU - Yamamoto, Erina
AU - Chiba, Satoshi
AU - Kamiyama, Naosumi
AU - Kiguchi, Takayoshi
N1 - Funding Information:
This work was partly supported by Grant-in-Aid for Young Scientists (A) (No. 25709061 ) from Japan Society for the Promotion of Science .
Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
PY - 2016/8/30
Y1 - 2016/8/30
N2 - The surface wettability of the native Si oxide surfaces were tuned by chemical adsorption of 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS) molecules through thermal CVD method at different temperature. Water contact angle measurements revealed that the water contact angles of the TMCTS-modified Si oxide surfaces at the temperature of 333-373 K were found to be in the range of 92 ± 2-102 ± 2°. The advancing and receding water contact angle of the surface prepared at 333 K were found to be 97 ± 2/92 ± 2°, showing low contact angle hysteresis surface. The water contact angles of the surfaces prepared at the temperature of 373-413 K increased with an increase in the treatment temperature. When the treatment temperature was more than 423 K, the water contact angles of TMCTS-modified surfaces were found to become more than 150°, showing superhydrophobic surface. AFM study revealed that the surface roughness of the TMCTS-modified surface increased with an increase in the treatment temperature. This geometric morphology enhanced the surface hydrophobicity. The surface roughness could be fabricated due to the hydrolysis/condensation reactions in the gas phase during CVD process. The effect of the treatment temperature on the reactivity of the TMCTS molecules were also investigated using a thermogravimetric analyzer.
AB - The surface wettability of the native Si oxide surfaces were tuned by chemical adsorption of 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS) molecules through thermal CVD method at different temperature. Water contact angle measurements revealed that the water contact angles of the TMCTS-modified Si oxide surfaces at the temperature of 333-373 K were found to be in the range of 92 ± 2-102 ± 2°. The advancing and receding water contact angle of the surface prepared at 333 K were found to be 97 ± 2/92 ± 2°, showing low contact angle hysteresis surface. The water contact angles of the surfaces prepared at the temperature of 373-413 K increased with an increase in the treatment temperature. When the treatment temperature was more than 423 K, the water contact angles of TMCTS-modified surfaces were found to become more than 150°, showing superhydrophobic surface. AFM study revealed that the surface roughness of the TMCTS-modified surface increased with an increase in the treatment temperature. This geometric morphology enhanced the surface hydrophobicity. The surface roughness could be fabricated due to the hydrolysis/condensation reactions in the gas phase during CVD process. The effect of the treatment temperature on the reactivity of the TMCTS molecules were also investigated using a thermogravimetric analyzer.
KW - 1,3,5,7-Tetramethylcyclotetrasiloxane
KW - CVD
KW - Contact angle hysteresis
KW - Hydrophobicity
KW - Superhydrophobicity
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U2 - 10.1016/j.apsusc.2016.03.149
DO - 10.1016/j.apsusc.2016.03.149
M3 - Article
AN - SCOPUS:84964600742
SN - 0169-4332
VL - 379
SP - 446
EP - 451
JO - Applied Surface Science
JF - Applied Surface Science
ER -